Spherical Gold Nanoparticles
Nanopartz™ Accurate™ Spherical Gold Nanoparticles from sizes 1.8nm to 125nm in the following forms:
- Product Group Details
Bare Spherical Gold Nanoparticles - Utilizing the only patented spherical gold nanoparticle commercially available, these bare particles are the industry standard in size accuracy, shape consistency, shelf life stability, and reactivity. This product is completely purified in DI water and comes in two different concentrations; 0.05mg/mL standard and 5mg/mL concentrated. This product comes with three different ligand options with negative and positive zeta potentials. This product may also be radiation sterilized and endotoxin purified. Every delivery comes with a Certificate of Analysis that includes a TEM image and UV VIS spectrum. All items are in stock and are shipped the same day for next day delivery.
Conjugated Spherical Gold Nanoparticles - Highly protected covalent polymer layer for a wide variety of pH and salt environments. Popular conjugations, antibodies, secondary antibody conjugates, and oligos. For use in dark field imaging, heterogeneous diagnostics including lateral flow assays, ELISA, and more.
Customer Designed Spherical Gold Nanoparticles for Research - Customers can request any covalent or charge induced conjugations, such as PEG or charged polymers. This product comes completely purified in the buffer chosen at two concentrations, 2.5mg/mL and 5mg/mL. This product may also be radiation sterilized and endotoxin purified. Every delivery comes with a Certificate of Analysis that includes a TEM image and UV VIS spectrum. All loading is determined.
Zero Order Diagnostics - Short length covalent polymer layer to take advantage of SPR shifting. Popular conjugations, antibodies, secondary antibody conjugates, and oligos.
Molecular Surface Modified Spherical Gold Nanoparticles - Alkyl thiol and other SAM modified spherical gold nanoparticles for analytical applications.
Spherical Gold Nanoparticles in Organic Solvents - Organic capped gold nanoparticles for use in a wide variety of organic solvents.
One-Step Kits: Spherical Gold Nanoparticles for Antibody Conjugations - Utilizing our patent pending technology, customers are provided 2.5mg of any sized gold nanoparticles (20-125nm) for one step conjugation to any antibody. A covalently bound polymer layer protects the gold from a wide range of pHs and salts and ensures a covalent bound antibody.
References:
Bioconjugated gold nanoparticles as a molecular based contrast agent: implications for imaging of deep tumors using optoacoustic tomography
JA Copland, M Eghtedari, VL Popov… - Molecular Imaging & …, 2004 - Elsevier
... Key words: Imaging; Cancer; Optoacoustics; Gold nanoparticles; Herceptin; Targeting; Laser
optoacoustic imaging system; Nanotechnology; Molecular probes ... Solid line – absorption spectrum
of the commercially available 40nm spherical gold NPs with a concentration of 9×10 ...
optoacoustic imaging system; Nanotechnology; Molecular probes ... Solid line – absorption spectrum
of the commercially available 40nm spherical gold NPs with a concentration of 9×10 ...
Molecular dynamics simulation study of self-assembled monolayers of alkanethiol surfactants onspherical gold nanoparticles
PK Ghorai… - The Journal of Physical Chemistry C, 2007 - ACS Publications
Atomistic molecular dynamics (MD) simulations of self-assembled alkanethiol monolayers
are performed to investigate the ligand shell organization of homoligand surfactants on
spherical gold nanoparticle surfaces as a function of temperature, nanoparticle size, and ...
are performed to investigate the ligand shell organization of homoligand surfactants on
spherical gold nanoparticle surfaces as a function of temperature, nanoparticle size, and ...
Optical properties of two interacting gold nanoparticles
W Rechberger, A Hohenau, A Leitner… - Optics …, 2003 - Elsevier
... Recently Tamaru et al. [8] have investigated a pair of two touching spherical silver particles and
found a strong anisotropy in the scattering spectra for different polarization directions. Maier et
al. [9] investigated rows of identical gold nanoparticles with interparticle distances short ...
found a strong anisotropy in the scattering spectra for different polarization directions. Maier et
al. [9] investigated rows of identical gold nanoparticles with interparticle distances short ...
Gold nanoparticles quench fluorescence by phase induced radiative rate suppression
E Dulkeith, M Ringler, TA Klar, J Feldmann… - Nano letters, 2005 - ACS Publications
... efficiency of Cy5 molecules as a function of their distance to the gold nanoparticle surface ... In
contrast, for metal nanoparticles on a glass substrate or a rough metal film, an ... effects, which are
much more pronounced at nanostructured surfaces than at isolated spherical AuNPs, 43 ...
contrast, for metal nanoparticles on a glass substrate or a rough metal film, an ... effects, which are
much more pronounced at nanostructured surfaces than at isolated spherical AuNPs, 43 ...
In situ amplified chemiluminescent detection of DNA and immunoassay of IgG using special-shapedgold nanoparticles as label
Z Wang, J Hu, Y Jin, X Yao… - Clinical chemistry, 2006 - Am Assoc Clin Chem
... Recently, spherical gold nanoparticles (Au-NPs) were found displaying far stronger
catalytic activity on luminol CL than that of Au(III). Some methods based on Au-NPs
probes have been developed for DNA detection or immunoassay. ...
catalytic activity on luminol CL than that of Au(III). Some methods based on Au-NPs
probes have been developed for DNA detection or immunoassay. ...
Direct coating of gold nanoparticles with silica by a seeded polymerization technique
E Mine, A Yamada, Y Kobayashi, M Konno… - Journal of colloid and …, 2003 - Elsevier
... Typically, spherical gold nanoparticles with an average diameter of 15±1 nm were observed,
though occasionally some oblong particles were present. ... 1c for nanoparticles produced by method
B. In contrast to method A, most particles were spherical and had a single gold core. ...
though occasionally some oblong particles were present. ... 1c for nanoparticles produced by method
B. In contrast to method A, most particles were spherical and had a single gold core. ...
Enhancement of dye fluorescence by gold nanoparticles: Analysis of particle size dependence
T Nakamura… - Japanese journal of applied physics, 2005 - adsabs.harvard.edu
... Abstract. Rose Bengal was spun on spherical gold nanoparticles immobilized on a quartz
plate by a silane coupling agent. The enhancement of the dye fluorescence was studied by
changing the diameter of the gold nanoparticles from 20 to 250 nm. ...
plate by a silane coupling agent. The enhancement of the dye fluorescence was studied by
changing the diameter of the gold nanoparticles from 20 to 250 nm. ...
Raman scattering enhancement contributed from individual gold nanoparticles and interparticle coupling
Z Zhu, T Zhu… - Nanotechnology, 2004 - iopscience.iop.org
... Spherical gold nanoparticles also have additional advantages in SERS studies. For example,
the synthetic technique of gold nanoparticles is quite mature, and monodispersed spherical
colloidal particles with different sizes can be easily prepared [40, 41]. ...
the synthetic technique of gold nanoparticles is quite mature, and monodispersed spherical
colloidal particles with different sizes can be easily prepared [40, 41]. ...
Self-assembly of nanoparticles into structured spherical and network aggregates
AK Boal, F Ilhan, JE DeRouchey, T Thurn-Albrecht… - Nature, 2000 - nature.com
... of nanoparticles into structured assemblies. This methodology allows monolayer-protected gold
particles to self-assemble into structured aggregates while thermally controlling their size and
morphology. Using 2-nm gold particles as building blocks, we show that spherical ...
particles to self-assemble into structured aggregates while thermally controlling their size and
morphology. Using 2-nm gold particles as building blocks, we show that spherical ...
Rapid aggregation of gold nanoparticles induced by non-cross-linking DNA hybridization
K Sato, K Hosokawa… - Journal of the American …, 2003 - ACS Publications
... genetic diagnosis because of three advantages: (1) the aggregation process is rapid and clearly
visible, (2) colloidal gold is a ... In principle, a single DNA molecule is sufficient to cross-link two
nanoparticles together, whereas our current system requires ... Spherical Nucleic Acids. ...
visible, (2) colloidal gold is a ... In principle, a single DNA molecule is sufficient to cross-link two
nanoparticles together, whereas our current system requires ... Spherical Nucleic Acids. ...
Size dependence of refractive index of gold nanoparticles
LB Scaffardi… - Nanotechnology, 2006 - iopscience.iop.org
... Abstract The extinction spectra of spherical gold nanoparticles suspended in a homogeneous
media were measured and the results were adjusted with Mie's theory together with an appropriate
modification of the optical properties of bulk material considering the limitation that ...
media were measured and the results were adjusted with Mie's theory together with an appropriate
modification of the optical properties of bulk material considering the limitation that ...
Permanent magnetism, magnetic anisotropy, and hysteresis of thiol-capped gold nanoparticles
P Crespo, R Litrán, TC Rojas, M Multigner… - Physical review letters, 2004 - APS
... In fact, the intrinsic magnetic anisotropy appears from the bal- ance between the spin-orbit
coupling and the lack of spherical symmetry in the distribution of the electric charges surrounding
the magnetic ... FIG. 4. UV-visible absorption spectra for the two studied gold nanoparticles. ...
coupling and the lack of spherical symmetry in the distribution of the electric charges surrounding
the magnetic ... FIG. 4. UV-visible absorption spectra for the two studied gold nanoparticles. ...
Spherical ensembles of gold nanoparticles on silica: electrostatic and size effects
B Sadtler… - Chemical Communications, 2002 - pubs.rsc.org
Core–shell ensembles of citrate-stabilized gold nanoparticles (20–80 nm) on submicron
silica cores (330–550 nm) have been prepared by electrostatic self-assembly with shell
packing densities as high as [curly or open phi]= 0.55.
silica cores (330–550 nm) have been prepared by electrostatic self-assembly with shell
packing densities as high as [curly or open phi]= 0.55.
Sonochemical processes and formation of gold nanoparticles within pores of mesoporous silica
W Chen, W Cai, L Zhang, G Wang… - Journal of colloid and …, 2001 - Elsevier
... HRTEM) techniques. The results showed that nearly spherical-shaped gold
nanoparticles, with mean size in diameter of 5.2 nm, are located in the pores, most
of which are less than 6 nm in diameter. The ultrasonic irradiation ...
nanoparticles, with mean size in diameter of 5.2 nm, are located in the pores, most
of which are less than 6 nm in diameter. The ultrasonic irradiation ...
Photothermal nanotherapeutics and nanodiagnostics for selective killing of bacteria targeted with gold nanoparticles
VP Zharov, KE Mercer, EN Galitovskaya… - Biophysical journal, 2006 - Elsevier
... Among the different nanostructures, gold nanoparticles, in different modifications (spherical, rods,
shells, etc.), are the most promising candidates for such photothermal (PT) sensitizers because
they are the strongest nanoabsorbers; their absorption coefficient due to profound ...
shells, etc.), are the most promising candidates for such photothermal (PT) sensitizers because
they are the strongest nanoabsorbers; their absorption coefficient due to profound ...
A method to construct a third-generation horseradish peroxidase biosensor: self-assembling gold nanoparticles to three-dimensional sol-gel network
J Jia, B Wang, A Wu, G Cheng, Z Li… - Analytical chemistry, 2002 - ACS Publications
... A Method to Construct a Third-Generation Horseradish Peroxidase Biosensor: Self-Assembling
Gold Nanoparticles to Three-Dimensional Sol−Gel Network. ... Finally, horseradish peroxidase
(HRP) was adsorbed onto the surface of the gold nanoparticles. ...
Gold Nanoparticles to Three-Dimensional Sol−Gel Network. ... Finally, horseradish peroxidase
(HRP) was adsorbed onto the surface of the gold nanoparticles. ...
Near-field coupling of a single fluorescent molecule and a spherical gold nanoparticle
T Härtling, P Reichenbach… - Optics Express, 2007 - opticsinfobase.org
... T. Härtling, P. Reichenbach, and LM Eng, "Near-field coupling of a single fluorescent molecule
and a spherical gold nanoparticle," Opt. ... van Veggel, DN Reinhoudt, M. M¨oller, and DI Gittins,
"Fluorescence Quenching of Dye Molecules near Gold Nanoparticles: Radiative and ...
and a spherical gold nanoparticle," Opt. ... van Veggel, DN Reinhoudt, M. M¨oller, and DI Gittins,
"Fluorescence Quenching of Dye Molecules near Gold Nanoparticles: Radiative and ...
Fluoroimmunoassay for antigen based on fluorescence quenching signal of gold nanoparticles
L Ao, F Gao, B Pan, R He… - Analytical chemistry, 2006 - ACS Publications
... Fluoroimmunoassay for Antigen Based on Fluorescence Quenching Signal of Gold
Nanoparticles. ... appear below). Long-Range Fluorescence Quenching by Gold
Nanoparticles in a Sandwich Immunoassay for Cardiac Troponin T. ...
Nanoparticles. ... appear below). Long-Range Fluorescence Quenching by Gold
Nanoparticles in a Sandwich Immunoassay for Cardiac Troponin T. ...
Detection and spectroscopy of gold nanoparticles using supercontinuum white light confocal microscopy
K Lindfors, T Kalkbrenner, P Stoller… - Physical review letters, 2004 - APS
... 1(b). The samples were prepared by spin coating a dilute solution of gold nanoparticles (British
Biocell) onto a microscope cover glass. ... For a spherical nanoparticle of diameter D the scattered
light propagates as a spherical wave, is colli- mated by the microscope objective, and ...
Biocell) onto a microscope cover glass. ... For a spherical nanoparticle of diameter D the scattered
light propagates as a spherical wave, is colli- mated by the microscope objective, and ...
Solution Behavior of Poly (styrene)-b lock-poly (2-vinylpyridine) Micelles Containing Gold Nanoparticles
S Mössmer, JP Spatz, M Möller, T Aberle… - …, 2000 - ACS Publications
... Solution Behavior of Poly(styrene)-block-poly(2-vinylpyridine) Micelles Containing
Gold Nanoparticles. ... copper grid. Agglomerates of gold particles, most of which
are non spherical in shape are observed. The formation ...
Gold Nanoparticles. ... copper grid. Agglomerates of gold particles, most of which
are non spherical in shape are observed. The formation ...
Size-selected gold nanoparticles by aerosol technology
MH Magnusson, K Deppert, JO Malm… - Nanostructured …, 1999 - Elsevier
... 1; it is similar to the one previously used to produce nanoparticles of Ag (1). It works ...
CONCLUSIONS We have produced size-selected particles of gold. ... After sintering, the particles
become compact, spherical, and even highly crystalline, depending on the sintering temperature. ...
CONCLUSIONS We have produced size-selected particles of gold. ... After sintering, the particles
become compact, spherical, and even highly crystalline, depending on the sintering temperature. ...
Effect of nanoscale geometry on molecular conformation: Vibrational sum-frequency generation of alkanethiols on gold nanoparticles
C Weeraman, AK Yatawara… - Journal of the …, 2006 - ACS Publications
... geometry. Here, we investigate the nanoscale geometric effects in a simple model
system of (approximately) spherical gold nanoparticles of varying diameter approaching
the size of the dodecanethiol adsorbate, 1.6 nm chain length. ...
system of (approximately) spherical gold nanoparticles of varying diameter approaching
the size of the dodecanethiol adsorbate, 1.6 nm chain length. ...
Origin of optical second-harmonic generation in spherical gold nanoparticles: Local surface and nonlocal bulk contributions
G Bachelier, J Butet, I Russier-Antoine… - Arxiv preprint arXiv: …, 2011 - arxiv.org
Abstract: The second-harmonic generation of 150 nm spherical gold nanoparticles is
investigated both experimentally and theoretically. We demonstrate that the interference
effects between dipolar and octupolar plasmons can be used as a fingerprint to ...
investigated both experimentally and theoretically. We demonstrate that the interference
effects between dipolar and octupolar plasmons can be used as a fingerprint to ...
Enormous size growth of thiol-passivated gold nanoparticles induced by near-IR laser light
Y Niidome, A Hori, T Sato… - Chemistry Letters, 2000 - J-STAGE
... successful for the size growth. In conclusion, the use of off-resonant 1064-nm laser
excita- tion was successful for preparing enormously large spherical gold particles,
using DT-passivated gold nanoparticles in cyclohexane. ...
excita- tion was successful for preparing enormously large spherical gold particles,
using DT-passivated gold nanoparticles in cyclohexane. ...
Size-and temperature-dependent structural transitions in gold nanoparticles
K Koga, T Ikeshoji… - Physical review letters, 2004 - APS
... sure to bring the particles into equilibrium at the furnace wall temperature; each particle
experiences a sufficiently large number of collisions with helium for equilibrium [8], ie, 1:3 1011
times per second in the case of a spherical 10 nm particle. Gold nanoparticles were annealed ...
experiences a sufficiently large number of collisions with helium for equilibrium [8], ie, 1:3 1011
times per second in the case of a spherical 10 nm particle. Gold nanoparticles were annealed ...
Gold-coated iron nanoparticles for biomedical applications
M Chen, S Yamamuro, D Farrell… - Journal of applied physics, 2003 - link.aip.org
Acicular iron and spherical iron based nanoparticles were coated with a thin layer of gold. ...
IV. CONCLUSIONS AND FUTURE WORK. Gold-coated acicular and spherical iron-based
nanoparticles were prepared by a mild chemical reduction process. ...
IV. CONCLUSIONS AND FUTURE WORK. Gold-coated acicular and spherical iron-based
nanoparticles were prepared by a mild chemical reduction process. ...
Catalysis by gold nanoparticles: epoxidation of propene
AK Sinha, S Seelan, S Tsubota… - Topics in catalysis, 2004 - Springer
... By using impregnation method on the other hand, spherical gold particles of the diameter larger ...
Gold-titanosilicate catalysts prepared by using NaOH as the precipitant showed best activity and ...
Partially charged Au nanoparticles are held on the support surface mostly due to ...
Gold-titanosilicate catalysts prepared by using NaOH as the precipitant showed best activity and ...
Partially charged Au nanoparticles are held on the support surface mostly due to ...
In vivo molecular probing of cellular compartments with gold nanoparticles and nanoaggregates
J Kneipp, H Kneipp, M McLaughlin, D Brown… - Nano letters, 2006 - ACS Publications
... After overnight incubation, the gold nanoparticles are contained in spherical bodies, which,
considering the length of the incubation time ( 30 h) and the fact that all of the nanoparticles
accumulate there rather than passing on to other structures, appear to be lysosomes. ...
considering the length of the incubation time ( 30 h) and the fact that all of the nanoparticles
accumulate there rather than passing on to other structures, appear to be lysosomes. ...
Distorted surface and interface structures of catalytic gold nanoparticles observed by sphericalaberration-free phase electron microscopy
T Kawasaki, Y Takai… - Applied Physics Letters, 2001 - ieeexplore.ieee.org
Abstract The surface and interface atomic structure of catalytic gold nanoparticles was
studied by analyzing a spherical aberration-free phase image. Typically, a catalytic gold
particle forms a single crystal having a cuboctahedral shape. The atomic structure of the ...
studied by analyzing a spherical aberration-free phase image. Typically, a catalytic gold
particle forms a single crystal having a cuboctahedral shape. The atomic structure of the ...
A novel method to construct a third-generation biosensor: self-assembling gold nanoparticles on thiol-functionalized poly (styrene-< i> co</i>-acrylic acid) …
S Xu… - Biosensors and Bioelectronics, 2004 - Elsevier
... View Within Article. Shown in Fig. 1(b) is a transmission electron microscope
micrograph of the gold nanoparticles. It can be seen that the gold nanoparticles are
spherical with a reasonable diameter distribution around 20 nm. ...
micrograph of the gold nanoparticles. It can be seen that the gold nanoparticles are
spherical with a reasonable diameter distribution around 20 nm. ...
Recognition of potassium ion in water by 15-crown-5 functionalized gold nanoparticles
SY Lin, SW Liu, CM Lin… - Analytical chemistry, 2002 - ACS Publications
... It is somewhat surprising to reveal the crystallinity of crown-capped gold nanoparticles (Figure
1B, ν s (CH 2 ) at 2917 cm - 1 ). Hence, the difference between a planar surface and the
spherical feature of nanoparticles should be taken into consideration. ...
1B, ν s (CH 2 ) at 2917 cm - 1 ). Hence, the difference between a planar surface and the
spherical feature of nanoparticles should be taken into consideration. ...
Infrared extinction properties of gold nanoshells
SJ Oldenburg, JB Jackson, SL Westcott… - Applied Physics …, 1999 - link.aip.org
... can shift the peak plasmon resonance wavelength hundreds of nanometers away from the
plasmon resonance of homogeneous spherical particles, into ... gold in an aqueous environment,
a seeded growth technique was used where small (1–2 nm) gold nanoparticles were first ...
plasmon resonance of homogeneous spherical particles, into ... gold in an aqueous environment,
a seeded growth technique was used where small (1–2 nm) gold nanoparticles were first ...
Electrodeposition of gold nanoparticles on indium/tin oxide electrode for fabrication of a disposable hydrogen peroxide biosensor
J Wang, L Wang, J Di… - Talanta, 2009 - Elsevier
... Fig. 1 illustrates the typical SEM images of AuNPs/ITO (a) and Cys/AuNPs/ITO (b)
electrode surfaces at high magnification. As can be seen, many spherical gold
nanoparticles are electrodeposited on the ITO film coated glass surface (Fig. ...
electrode surfaces at high magnification. As can be seen, many spherical gold
nanoparticles are electrodeposited on the ITO film coated glass surface (Fig. ...
Mineralization of gold nanoparticles in a block copolymer microemulsion
JP Spatz, S Mößmer… - Chemistry-A European …, 1996 - Wiley Online Library
... The grayish shadow around the particles demonstrates that these are still protected by a shell
of the block copolymer. This was con- firmed by SFM showing that this film also consisted of
spherical polymer aggregates. ... J 1996.2, No. 12 Page 4. 1552-1 555 Gold Nanoparticles ...
of the block copolymer. This was con- firmed by SFM showing that this film also consisted of
spherical polymer aggregates. ... J 1996.2, No. 12 Page 4. 1552-1 555 Gold Nanoparticles ...
A simple strategy for prompt visual sensing by gold nanoparticles: general applications of interparticle hydrogen bonds
SY Lin, SH Wu… - Angewandte Chemie International …, 2006 - Wiley Online Library
... Visual sensing based on gold nanoparticles (GNPs) is important and attractive because the
intense red color arising from surface plasmon (SP ... Chemical reduction of HAuCl 4 by sodium
citrate was employed to synthesize water-soluble and spherical gold sols.8 The GNPs were ...
intense red color arising from surface plasmon (SP ... Chemical reduction of HAuCl 4 by sodium
citrate was employed to synthesize water-soluble and spherical gold sols.8 The GNPs were ...
Photocurrent spectroscopy of optical absorption enhancement in silicon photodiodes via scattering from surface plasmon polaritons in gold nanoparticles
SH Lim, W Mar, P Matheu… - Journal of applied …, 2007 - ieeexplore.ieee.org
... absorption enhancement in silicon photodiodes via scattering from surface plasmon polaritons
in gold nanoparticles ... b Scanning electron mi- crograph of Au nanoparticles deposited on
photodiode surface ... particle can be decomposed into a series of vector spherical harmon- ics ...
in gold nanoparticles ... b Scanning electron mi- crograph of Au nanoparticles deposited on
photodiode surface ... particle can be decomposed into a series of vector spherical harmon- ics ...
A study on the sizes and concentrations of gold nanoparticles by spectra of absorption, resonance Rayleigh scattering and resonance non-linear scattering
YQ He, SP Liu, L Kong… - … Acta Part A: Molecular and Biomolecular …, 2005 - Elsevier
... The absorption peaks shift red with the increase of diameters of gold nanoparticles. Brus [16]
using spherical particle-in-a-box model has ever proved that when the diameter of spherical
nanoparticle is below 10 nm, there is a blue shift of absorption band caused by the further ...
using spherical particle-in-a-box model has ever proved that when the diameter of spherical
nanoparticle is below 10 nm, there is a blue shift of absorption band caused by the further ...
Optical properties of metal nanoparticles and nanoparticle aggregates important in biosensors
AA Lazarides, K Lance Kelly, TR Jensen… - Journal of Molecular …, 2000 - Elsevier
... including the substrate on which they are sitting. In another application, we have
developed a new dynamic effective medium approximation for the description of
aggregates of spherical gold nanoparticles that are linked using DNA. ...
developed a new dynamic effective medium approximation for the description of
aggregates of spherical gold nanoparticles that are linked using DNA. ...
Photocatalytic deposition of gold nanoparticles on electrospun nanofibers of titania
D Li, JT McCann, M Gratt… - Chemical physics letters, 2004 - Elsevier
... If the concentration of organic capping regents was higher than 1.0 × 10 −3 M, the resultant gold
nanoparticles exhibited a semi-spherical shape exclusively (see Fig. 4b, d). The particle size
decreased slightly as the concentration of a capping reagent increased. ...
nanoparticles exhibited a semi-spherical shape exclusively (see Fig. 4b, d). The particle size
decreased slightly as the concentration of a capping reagent increased. ...
Sonolytic control of rate of gold (III) reduction and size of formed gold nanoparticles: Relation between reduction rates and sizes of formed nanoparticles
K Okitsu, A Yue, S Tanabe, H Matsumoto… - Bulletin of the chemical …, 2002 - J-STAGE
... The relation between the size of the formed gold particles and the rate of gold() reduction was
analyzed on the basis of the material balance. Assuming the formation of monodis- persed gold
nanoparticles with a spherical shape, the material balance is shown as Eq. 11: ...
analyzed on the basis of the material balance. Assuming the formation of monodis- persed gold
nanoparticles with a spherical shape, the material balance is shown as Eq. 11: ...
Numerical simulations for description of UV laser interaction with gold nanoparticles embedded in silica
F Bonneau, P Combis, JL Rullier, J Vierne… - Applied Physics B: …, 2004 - Springer
... To take into account the laser absorption in a spherical nanoparticle and the surrounding ionized
sil- ica, we use the code in spherical geometry and we solve the Helmholtz ... Numerical simulations
for description of UV laser interaction with gold nanoparticles embedded in silica ...
sil- ica, we use the code in spherical geometry and we solve the Helmholtz ... Numerical simulations
for description of UV laser interaction with gold nanoparticles embedded in silica ...
Preparation and assembly of colloidal gold nanoparticles in CTAB-stabilized reverse microemulsion
F Chen, GQ Xu… - Materials Letters, 2003 - Elsevier
... the gold nanoparticles prepared in CTAB/n-butanol/octane/water system, as well as a large
amount of the black Au-containing precipitate as a by-product. Without the addition of C 10 H
12 SH, only single crystals with many different shapes (cylinder, triangle, spherical, hexagon ...
amount of the black Au-containing precipitate as a by-product. Without the addition of C 10 H
12 SH, only single crystals with many different shapes (cylinder, triangle, spherical, hexagon ...
Attachment of gold nanoparticles to glassy carbon electrode and its application for the direct electrochemistry and electrocatalytic behavior of hemoglobin
L Zhang, X Jiang, E Wang… - Biosensors and Bioelectronics, 2005 - Elsevier
... to use. Spherical colloidal gold nanoparticles of about 25 nm in diameter were
prepared by citrate reduction of HAuCl 4 in aqueous solution (Frens, 1973). 2.4.
Preparation of Hb-immobilized gold nanoparticles modified GCE. ...
prepared by citrate reduction of HAuCl 4 in aqueous solution (Frens, 1973). 2.4.
Preparation of Hb-immobilized gold nanoparticles modified GCE. ...
Colloidal gold nanoparticles protected by water-soluble homopolymers and random copolymers
ABR Mayer… - European polymer journal, 1998 - Elsevier
... sizes listed in Table 3. With a fast reduction method, such as the borohydride reduction chosen
for this work, many nuclei are formed initially, which results in smaller, and therefore spherical,
particles. For comparison, the TEM micrograph for gold nanoparticles obtained by the ...
for this work, many nuclei are formed initially, which results in smaller, and therefore spherical,
particles. For comparison, the TEM micrograph for gold nanoparticles obtained by the ...
Attachment of gold nanoparticles to glassy carbon electrode and its application for the voltammetric resolution of ascorbic acid and dopamine
L Zhang… - Journal of Electroanalytical Chemistry, 2005 - Elsevier
... with water, and dried prior to use. Spherical colloidal gold nanoparticles of about
25 nm in diameter were prepared by citrate reduction of HAuCl 4 in aqueous solution
[32]. 2.4. Preparation of gold nanoparticles-modified GCE. ...
25 nm in diameter were prepared by citrate reduction of HAuCl 4 in aqueous solution
[32]. 2.4. Preparation of gold nanoparticles-modified GCE. ...
Laser-induced heating and melting of gold nanoparticles studied by time-resolved x-ray scattering
A Plech, V Kotaidis, S Gresillon, C Dahmen… - Physical Review B, 2004 - APS
... Link and El-Sayed4,28 have investigated the shape transformation of rod-like gold nanoparticles
and found time constants of 30 ps for the transition to the stable spherical configuration,28 a time
scale which is comparable to phonon- PHYSICAL REVIEW B 70, 195423 (2004) ...
and found time constants of 30 ps for the transition to the stable spherical configuration,28 a time
scale which is comparable to phonon- PHYSICAL REVIEW B 70, 195423 (2004) ...
Anomalous infrared and visible light absorption by spherical gold nanoparticles dispersed in a comb copolymer
Y Suzuki, H Makanae, H Kudo, T Miyanaga… - Applied Physics A: …, 2004 - Springer
We report the first observations of anomalous infrared and visible light absorption of
spherical gold nanoparticles dispersed in a comb copolymer. The dependence of the
infrared absorption of the CO stretch band of the comb copolymer on the volume fraction ...
spherical gold nanoparticles dispersed in a comb copolymer. The dependence of the
infrared absorption of the CO stretch band of the comb copolymer on the volume fraction ...
Alloy formation of supported gold nanoparticles at their transition from clusters to solids: Does size matter?
HG Boyen, A Ethirajan, G Kästle, F Weigl… - Physical review letters, 2005 - APS
... matrix is removed by exposure to an oxygen plasma re- sulting in gold oxide particles, which
then are reduced by a hydrogen plasma to elemental Au. The final result is an array of
well-separated naked Au nanoparticles of rather uniform size and spherical shape showing a ...
then are reduced by a hydrogen plasma to elemental Au. The final result is an array of
well-separated naked Au nanoparticles of rather uniform size and spherical shape showing a ...
Formation of ordered arrays of gold nanoparticles from CTAB reverse micelles
J Lin, W Zhou… - Materials letters, 2001 - Elsevier
... However, with dodecanethiol capping, the gold clusters, which are stable with spherical shape,
can form superlattices as observed above. ... 3a). This indicates that size distribution of the gold
nanoparticles is indeed narrowed by C 12 H 25 SH capping in the supernatant. ...
can form superlattices as observed above. ... 3a). This indicates that size distribution of the gold
nanoparticles is indeed narrowed by C 12 H 25 SH capping in the supernatant. ...
Direct electron transfer between cytochrome< i> c</i> and a gold nanoparticles modified electrode
L Wang… - Electrochemistry communications, 2004 - Elsevier
... 2.4. Preparation of gold nanoparticles. All glassware used in the procedures was cleaned in a
bath of freshly prepared solution (3:1 HNO 3 –HCl), thoroughly washed with water, and dried
prior to use. Spherical colloidal GNPs were prepared by citrate reduction of HAuCl 4 in ...
bath of freshly prepared solution (3:1 HNO 3 –HCl), thoroughly washed with water, and dried
prior to use. Spherical colloidal GNPs were prepared by citrate reduction of HAuCl 4 in ...
Laser fragmentation of water-suspended gold flakes via spherical submicroparticles to finenanoparticles
M Kawasaki… - The Journal of Physical Chemistry B, 2005 - ACS Publications
By nanosecond, 532-nm laser irradiation typically at~ 1 J/(cm2 pulse), water-suspended thin
gold flakes, 0.1-0.2-μm thick but more than 10-μm across, were efficiently fragmented in a
unique two-step mode, as evidenced by the in situ extinction spectra taken as a function of ...
gold flakes, 0.1-0.2-μm thick but more than 10-μm across, were efficiently fragmented in a
unique two-step mode, as evidenced by the in situ extinction spectra taken as a function of ...
Diagnostics of Single Base‐Mismatch DNA Hybridization on Gold Nanoparticles by Using the Hyper‐Rayleigh Scattering Technique
PC Ray - Angewandte Chemie International Edition, 2006 - Wiley Online Library
... After cooling to room temperature, the gold nanoparticle solution was diluted to 100 mL with
deionized water. The gold nanoparticles were characterized by TEM (as shown in Figure 4) and
were found to be mostly spherical with the average diameter of 15±3 nm. ...
deionized water. The gold nanoparticles were characterized by TEM (as shown in Figure 4) and
were found to be mostly spherical with the average diameter of 15±3 nm. ...
Multilayered construction of glucose oxidase and gold nanoparticles on Au electrodes based on layer-by-layer covalent attachment
W Yang, J Wang, S Zhao, Y Sun… - Electrochemistry …, 2006 - Elsevier
... doubly distilled water and dried in air. Spherical colloidal gold nanoparticles were
prepared by citrate reduction of HAuCl 4 according to the recipe described in the
literature [39]. The resulting solution of GNPs was examined ...
prepared by citrate reduction of HAuCl 4 according to the recipe described in the
literature [39]. The resulting solution of GNPs was examined ...
Practical preparation of anionic mercapto ligand-stabilized gold nanoparticles and their immobilization
T Yonezawa… - Colloids and Surfaces A: Physicochemical and …, 1999 - Elsevier
... Fig. 2. Every gold nanoparticle has a spherical form, and a narrow size distribution
is observed for each photograph. Coagulation of gold nanoparticles is found for
gold nanoparticles with small stabilizer/gold ratios (0.1–0.5). ...
is observed for each photograph. Coagulation of gold nanoparticles is found for
gold nanoparticles with small stabilizer/gold ratios (0.1–0.5). ...
Formation of gold nanoparticles by good's buffers
A Habib, M Tabata… - Bulletin of the Chemical Society of Japan, 2005 - J-STAGE
... It is known that spherical gold nanoparticles show a strong absorption band in the visible region
between 520–550 nm. This absorption, called the plasmon resonance absorption,27,28 A.
Habib et al. Bull. Chem. Soc. Jpn., 78, No. 2 (2005) 263 Page 3. ...
between 520–550 nm. This absorption, called the plasmon resonance absorption,27,28 A.
Habib et al. Bull. Chem. Soc. Jpn., 78, No. 2 (2005) 263 Page 3. ...
Loading of gold nanoparticles inside the DPPC bilayers of liposome and their effects on membrane fluidities
SH Park, SG Oh, JY Mun… - Colloids and Surfaces B: Biointerfaces, 2006 - Elsevier
... All of the gold nanoparticles were spherical and relatively mono dispersed as 3–4 nm of diameter
(Fig. ... In this study, gold nanoparticles which are spherical and have the size of 3–4 nm in diameter
(less than the thickness of lipid bilayer) were loaded in liposomes. ...
(Fig. ... In this study, gold nanoparticles which are spherical and have the size of 3–4 nm in diameter
(less than the thickness of lipid bilayer) were loaded in liposomes. ...
Detection of acoustic oscillations of single gold nanospheres by time-resolved interferometry
MA van Dijk, M Lippitz… - Physical review letters, 2005 - APS
... The samples are roughly spherical gold particles with diameters ranging between 10 and 80
nm (British Biocell International and Sigma-Aldrich), spin coated with a poly(vinyl alcohol) solution
(10 g ... Figure 2 shows images of single gold nanoparticles with 10 and 20 nm diameter ...
nm (British Biocell International and Sigma-Aldrich), spin coated with a poly(vinyl alcohol) solution
(10 g ... Figure 2 shows images of single gold nanoparticles with 10 and 20 nm diameter ...
Adding sodium dodecylsulfate to the running electrolyte enhances the separation of gold nanoparticles by capillary electrophoresis
FK Liu, GT Wei - Analytica chimica acta, 2004 - Elsevier
... Thus, an increase in the SDS concentration increases the electrophoretic mobility of gold
nanoparticles. ... to the surface area of gold particles: (1). where r denotes the radius of a gold particle. ...
For a spherical gold particle, f is given by Stoke's law [30] as (3). where η denotes the ...
nanoparticles. ... to the surface area of gold particles: (1). where r denotes the radius of a gold particle. ...
For a spherical gold particle, f is given by Stoke's law [30] as (3). where η denotes the ...
Facile electrocatalytic redox of hemoglobin by flower-like gold nanoparticles on boron-doped diamond surface
M Li, G Zhao, R Geng… - Bioelectrochemistry, 2008 - Elsevier
... We can see that the spherical gold nanoparticles with large specific surface area were evenly
distributed on BDD surface. ... Fig. 2. XRD patterns of (A) Flower-like gold nanoparticles (B) Spherical
gold nanoparticles (C) Convex polyhedron gold nanoparticles. View Within Article. ...
distributed on BDD surface. ... Fig. 2. XRD patterns of (A) Flower-like gold nanoparticles (B) Spherical
gold nanoparticles (C) Convex polyhedron gold nanoparticles. View Within Article. ...
Estimation of tumour dose enhancement due to gold nanoparticles during typical radiation treatments: a preliminary Monte Carlo study
SH Cho - Physics in medicine and biology, 2005 - iopscience.iop.org
... MC characterization of brachytherapy sources, namely, a source located at the centre of a
spherical phantom with the radius of 30 cm. As in the external beam cases, the phantom material
within the tumour region was replaced by tissue infused with gold nanoparticles at three ...
spherical phantom with the radius of 30 cm. As in the external beam cases, the phantom material
within the tumour region was replaced by tissue infused with gold nanoparticles at three ...
Linear Assemblies of Silica‐Coated Gold Nanoparticles Using Carbon Nanotubes as Templates
MA Correa‐Duarte, N Sobal… - Advanced …, 2004 - Wiley Online Library
... attached gold nanoparti- cles to CNTs using azide photochemistry and DNA.[21] Other authors ...
has been applied for the assembly of many different types of nanoparticles, including noble metals,
both on macro- scopic substrates[7,26] and on spherical polystyrene colloids ...
has been applied for the assembly of many different types of nanoparticles, including noble metals,
both on macro- scopic substrates[7,26] and on spherical polystyrene colloids ...
Block copolymer assembly via kinetic control
H Cui, Z Chen, S Zhong, KL Wooley… - Science, 2007 - sciencemag.org
... This concept has been implemented with the addition of positively charged gold
nanoparticles into a 50% THF/water suspension of PAA 94 -b-PMA 103 -b-PS 130
spherical micelles, assembled without added diamine. Each ...
nanoparticles into a 50% THF/water suspension of PAA 94 -b-PMA 103 -b-PS 130
spherical micelles, assembled without added diamine. Each ...
Laser morphological manipulation of gold nanoparticles periodically arranged on solid supports
F Sun, W Cai, Y Li, G Duan, WT Nichols… - Applied Physics B: …, 2005 - Springer
... two suitable tech- niques to manipulate the morphologies of nanoparticles. Thermal annealing
has been used to change the shapes of par- ticles in solid matrixes or in arrays on solid supports.
Numerous groups have induced a spherical particle morphology of gold [13], silver ...
has been used to change the shapes of par- ticles in solid matrixes or in arrays on solid supports.
Numerous groups have induced a spherical particle morphology of gold [13], silver ...
Planar array of 1D gold nanoparticles on ridge-and-valley structured carbon
T Teranishi, A Sugawara, T Shimizu… - Journal of the American …, 2002 - ACS Publications
... as well as the subsequent formation of registered 1D arrays of spherical microdomains and
nanoparticles, is presented. ... ... Formation of Wormlike Aggregates of Fluorocarbon−Hydrocarbon
Hybrid Surfactant by Langmuir−Blodgett Transfer and Alignment of Gold Nanoparticles. ...
nanoparticles, is presented. ... ... Formation of Wormlike Aggregates of Fluorocarbon−Hydrocarbon
Hybrid Surfactant by Langmuir−Blodgett Transfer and Alignment of Gold Nanoparticles. ...
[PDF] Catalytic gold nanoparticles
MB Cortie… - Materials Forum, 2002 - gbhenterprises.tw
... the best results are actually obtained for mixtures of Au(OH)3 nanoparticles on transition ... Figure
2. Approximate size of nominally spherical and hemispherical clusters of Aun. The attachment
of gold clusters to a substrate provides new geometric possibilities besides the merely ...
2. Approximate size of nominally spherical and hemispherical clusters of Aun. The attachment
of gold clusters to a substrate provides new geometric possibilities besides the merely ...
Electrochemical biosensor based on integrated assembly of dehydrogenase enzymes and gold nanoparticles
BK Jena… - Analytical chemistry, 2006 - ACS Publications
... the network have a size distribution between 70 and 100 nm and are almost spherical in shape. ...
to probe the nature of the modified electrodes and the influence of nanoparticles on electron ...
features obtained at the nAuS electrode resemble those observed at a gold single-crystal ...
to probe the nature of the modified electrodes and the influence of nanoparticles on electron ...
features obtained at the nAuS electrode resemble those observed at a gold single-crystal ...
Solidification of gold nanoparticles in carbon nanotubes
S Arcidiacono, JH Walther, D Poulikakos… - Physical review letters, 2005 - APS
... 534, n 20) the particle has a length of 7.2 nm, with a solidification tem- perature of 1225 K, while
a corresponding spherical cluster in ... To summarize, in this Letter the solidification and the structure
of gold nanoparticles inside nanotubes have been studied using MD simulations. ...
a corresponding spherical cluster in ... To summarize, in this Letter the solidification and the structure
of gold nanoparticles inside nanotubes have been studied using MD simulations. ...
Enhancement of Pt utilization in electrocatalysts by using gold nanoparticles
D Zhao, BQ Xu - Angewandte Chemie, 2006 - Wiley Online Library
... electron microscopy (TEM) images of the as-prepared and carbon-supported Pt m ∧Au particles,
which assume an approximately spherical shape. ... CV curves should arise from the presence of
Pt in the Pt m ∧Au/C electrocatalyst as carbon-supported gold nanoparticles (Au/C ...
which assume an approximately spherical shape. ... CV curves should arise from the presence of
Pt in the Pt m ∧Au/C electrocatalyst as carbon-supported gold nanoparticles (Au/C ...
Gold nanoparticles: effect of treatment on structure and catalytic activity of Au/Fe 2 O 3 catalyst prepared by co‐precipitation
D Horváth, L Toth… - Catalysis letters, 2000 - Springer
... A promot- ing effect of iron oxide on the catalytic activity of gold nanoparticles
was also established. ... Here the effect was explained by a change in the gold
particles size morphol- ogy from spherical to hemispherical [29]. ...
was also established. ... Here the effect was explained by a change in the gold
particles size morphol- ogy from spherical to hemispherical [29]. ...
Structure–property relationships in nematic gold nanoparticles
L Cseh… - J. Mater. Chem., 2007 - xlink.rsc.org
... In summary, we have prepared novel nematic gold nanoparticles where the spherical
particles are covered with a monolayer of calamitic mesogens and hydrocarbon chains.
A variation in the particles size and the hydrocarbon ...
particles are covered with a monolayer of calamitic mesogens and hydrocarbon chains.
A variation in the particles size and the hydrocarbon ...
Nonlocal effects in the plasmons of strongly interacting nanoparticles, dimers, and waveguides
FJ García de Abajo - The Journal of Physical Chemistry C, 2008 - ACS Publications
... as bulk metals and clusters of up to hundreds of noble metal atoms,(12) which are insufficient
to describe larger nanoparticles (eg, 250000 ... realized to produce significant plasmon broadening
in small noble metal nanocrystals,(3) as shown in Figure 1 for spherical gold particles. ...
to describe larger nanoparticles (eg, 250000 ... realized to produce significant plasmon broadening
in small noble metal nanocrystals,(3) as shown in Figure 1 for spherical gold particles. ...
Study of UV laser interaction with gold nanoparticles embedded in silica
F Bonneau, P Combis, JL Rullier, J Vierne… - Applied Physics B: …, 2002 - Springer
... Page 9. BONNEAU et al. Study of UV laser interaction with gold nanoparticles embedded
in silica 811 FIGURE ... fluences. The following results concern the interaction of a single
Gaussian laser pulse of FWHM 3 ns with a spherical gold in- ...
in silica 811 FIGURE ... fluences. The following results concern the interaction of a single
Gaussian laser pulse of FWHM 3 ns with a spherical gold in- ...
Assembling gold nanoparticles as nanostructured films using an electrophoretic approach
N Chandrasekharan… - Nano Letters, 2001 - ACS Publications
... Experimental Section. Highly concentrated (12 mM) gold nanoparticles in toluene were prepared
according to the previously reported procedure. ... Transmission electron micrographs of gold solution
in THF showed nearly spherical particles with a diameter of 5−8 nm. ...
according to the previously reported procedure. ... Transmission electron micrographs of gold solution
in THF showed nearly spherical particles with a diameter of 5−8 nm. ...
Dichroic thin layer films prepared from alkanethiol-coated gold nanoparticles
AH Lu, GH Lu, AM Kessinger… - The Journal of Physical …, 1997 - ACS Publications
... Gold nanoparticles were assembled into three-dimensional aggregates in colloidal dispersions
and were attached to ZrO2 surfaces through photoinduced [4 + 4] cycloaddition reactions between
adsorbed anthracene ... The nanoparticles were found to be spherical. ...
and were attached to ZrO2 surfaces through photoinduced [4 + 4] cycloaddition reactions between
adsorbed anthracene ... The nanoparticles were found to be spherical. ...
Local fields close to the surface of nanoparticles and aggregates of nanoparticles
M Quinten - Applied Physics B: Lasers and Optics, 2001 - Springer
... Page 5. QUINTEN Local fields of nanoparticles 249 a b c d e f FIGURE 3 Size dependence of
spectra of QNF, QR and Qsca for a spherical gold clusters with increasing diameter: 2a = 10 nm
(a), 2a = 20 nm (b), 2a = 40 nm (c), 2a = 100 nm (d), 2a = 150 nm (e), 2a = 200 nm (f) a b ...
spectra of QNF, QR and Qsca for a spherical gold clusters with increasing diameter: 2a = 10 nm
(a), 2a = 20 nm (b), 2a = 40 nm (c), 2a = 100 nm (d), 2a = 150 nm (e), 2a = 200 nm (f) a b ...
Tunable Surface‐Enhanced Raman Scattering from Large Gold Nanoparticle Arrays
A Wei, B Kim, B Sadtler… - ChemPhysChem, 2001 - Wiley Online Library
... SERS substrates, including silver-coated nanosphere arrays,3 metal-tipped and metal-coated
nanosized posts,4 spherical gold nanoshells,5 ... this Communication we describe the SERS
properties of highly ordered, close-packed arrays of large (16–170 nm) gold nanoparticles. ...
nanosized posts,4 spherical gold nanoshells,5 ... this Communication we describe the SERS
properties of highly ordered, close-packed arrays of large (16–170 nm) gold nanoparticles. ...
Electric dipole origin of the second harmonic generation of small metallic particles
J Nappa, G Revillod, I Russier-Antoine, E Benichou… - Physical Review B, 2005 - APS
... However, surface states arising from sur- face defects or from an organic layer adsorbed at the
surface of the particles would be an equally valid source of the de- struction of the pure spherical
symmetry. Second, the gold nanoparticles are not perfect nanocrystals, and therefore ...
surface of the particles would be an equally valid source of the de- struction of the pure spherical
symmetry. Second, the gold nanoparticles are not perfect nanocrystals, and therefore ...
Morphological selection of gold nanoparticles electrodeposited on various substrates
MS El-Deab, T Sotomura… - Journal of The Electrochemical …, 2005 - link.aip.org
Gold nanoparticles with different morphologies (nanocrystallites, perfect nanospheres, plumbs,
and nanoaggregates) have been ... Au nanoparticles with crystalline geometry were prepared on
the Au(111 ... Au particles with a perfect spherical shape were electrodeposited on the ...
and nanoaggregates) have been ... Au nanoparticles with crystalline geometry were prepared on
the Au(111 ... Au particles with a perfect spherical shape were electrodeposited on the ...
New strategy for preparing thin gold films on modified glass surfaces by electroless deposition
S Hrapovic, Y Liu, G Enright, F Bensebaa… - Langmuir, 2003 - ACS Publications
... As an example, Figure 1B displays an atomic force micrograph for the adhesion of 10 nm gold
nanoparticles on the polymer-coated glass surface. The particles retained their spherical character
with an average height of 10.7 ± 1.8 nm, an indicator of the formation of a monolayer ...
nanoparticles on the polymer-coated glass surface. The particles retained their spherical character
with an average height of 10.7 ± 1.8 nm, an indicator of the formation of a monolayer ...
Preparation of gold nanoparticles in formamide and N, N-dimethylformamide in the presence of poly (amidoamine) dendrimers with surface methyl ester groups
K Esumi, A Kameo, A Suzuki… - Colloids and Surfaces A: …, 2001 - Elsevier
... to these simulations, generation of 0–2 possesses a highly asymmetric, open shape, while a
generation greater than 4 has nearly spherical shape and ... 3.6 nm for G1.5, 7.6 nm for G3.5, and
11.2 nm for G5.5. In this study, the average diameters of gold nanoparticles prepared in ...
generation greater than 4 has nearly spherical shape and ... 3.6 nm for G1.5, 7.6 nm for G3.5, and
11.2 nm for G5.5. In this study, the average diameters of gold nanoparticles prepared in ...
Preparation of gold nanoplates by a microwave-polyol method
M Tsuji, M Hashimoto, Y Nishizawa… - Chemistry Letters, 2003 - J-STAGE
... Preparation of gold nanoparticles under MW heating (480–1100 W) has re- cently been studied
by three research groups.1–3 When HAuCl4/3H2O or HAuCl4 was reduced in methanol, ethanol,
or N,N-dimethylformamide for 0.5–5min, spherical nanoparti- cles with diameters ...
by three research groups.1–3 When HAuCl4/3H2O or HAuCl4 was reduced in methanol, ethanol,
or N,N-dimethylformamide for 0.5–5min, spherical nanoparti- cles with diameters ...
Thermionic emission of electrons from gold nanoparticles by nanosecond pulse-laser excitation of interband
K Yamada, K Miyajima… - The Journal of Physical …, 2007 - ACS Publications
... The gold nanoparticles are mostly spherical, whose average diameter and standard deviation
of the size distribution were calculated to be 10.4 and 4.0 nm, respectively. Figure 1b shows an
optical absorption spectrum of the gold nanoparticles in the SDS solution. ...
of the size distribution were calculated to be 10.4 and 4.0 nm, respectively. Figure 1b shows an
optical absorption spectrum of the gold nanoparticles in the SDS solution. ...
Liquid‐Crystalline Phases Made of Gold Nanoparticles
M Wojcik, W Lewandowski… - Angewandte …, 2009 - Wiley Online Library
... Spontaneous formation of smectic and columnar structures was observed when
spherical gold nanoparticles were functionalized with mesogenic thiols (see layered
structure and X-ray pattern of a sample in smectic phase). ...
spherical gold nanoparticles were functionalized with mesogenic thiols (see layered
structure and X-ray pattern of a sample in smectic phase). ...
Self-assembled gold nanoparticles modified ITO electrodes: The monolayer binder molecule effect
B Ballarin, MC Cassani, E Scavetta… - Electrochimica Acta, 2008 - Elsevier
... 2A) shows randomly bound gold nanoparticles, the majority of which are with spherical shape.
Increasing t to 120 min, an increase of the number of isolated particles and the concomitant
presence of three-dimensional aggregates became evident (Fig. 2B). ...
Increasing t to 120 min, an increase of the number of isolated particles and the concomitant
presence of three-dimensional aggregates became evident (Fig. 2B). ...
… -, micro-, and nanochemical architectures on electrode surfaces. Bulk surface modification of glassy carbon microspheres with gold nanoparticles and their electrical …
X Dai, GG Wildgoose, C Salter, A Crossley… - Analytical …, 2006 - ACS Publications
... Chemical reagents were obtained as follows: gold(I) sodium thiosulfate (AuNa(S 2 O 3 ) 2 ·xH
2 O, 99.9%) and glassy carbon spherical powder (10−20 μm, type 1) were purchased from Alfa
Aesar (Heysham, UK). ... Electroless Deposition of Gold Nanoparticles. ...
2 O, 99.9%) and glassy carbon spherical powder (10−20 μm, type 1) were purchased from Alfa
Aesar (Heysham, UK). ... Electroless Deposition of Gold Nanoparticles. ...
Glucose oxidase/colloidal gold nanoparticles immobilized in Nafion film on glassy carbon electrode: direct electron transfer and electrocatalysis
S Zhao, K Zhang, Y Bai, W Yang… - Bioelectrochemistry, 2006 - Elsevier
... It was reported that gold nanoparticles (GNPs) could adsorb redox enzymes (proteins) without
loss of their biological activities [22]. ... Spherical GNPs were prepared according to the literature
[25] by adding sodium citrate solution to a boiling HAuCl 4 aqueous solution. ...
loss of their biological activities [22]. ... Spherical GNPs were prepared according to the literature
[25] by adding sodium citrate solution to a boiling HAuCl 4 aqueous solution. ...
Surface-plasmon resonances in single metallic nanoparticles
T Klar, M Perner, S Grosse, G Von Plessen… - Physical Review Letters, 1998 - APS
... The calculations contain no adjustable parameters; bulk dielectric data from [12] are used, the
spherical particle shape and the radius r 20 nm ... For instance, marking of cell structures with gold
nanoparticles, which is routinely employed in electron microscopy, could be used in ...
spherical particle shape and the radius r 20 nm ... For instance, marking of cell structures with gold
nanoparticles, which is routinely employed in electron microscopy, could be used in ...
Acoustic and optical modes of single dumbbells of gold nanoparticles
AL Tchebotareva, MA van Dijk, PV Ruijgrok… - …, 2009 - Wiley Online Library
... Figure 3 shows the Fourier transforms of the typical vibration traces (normalized to the spectral
density of the breathing mode) along with SEM images of corresponding nanoparticles. Panel
(a) shows a typical frequency response of a single spherical gold nanoparticle of 85±5 ...
density of the breathing mode) along with SEM images of corresponding nanoparticles. Panel
(a) shows a typical frequency response of a single spherical gold nanoparticle of 85±5 ...
Optical properties of short range ordered arrays of nanometer gold disks prepared by colloidal lithography
P Hanarp, M Käll… - The Journal of Physical …, 2003 - ACS Publications
... Quasi-spherical or quasi-rod gold nanoparticles with an average diameter of 3.8 nm are
randomly precipitated in a silica-based glass by a heat-treatment method. After ultrafast laser
irradiation at 400 and 620 nm, optical absorption, birefringence, and ... ...
randomly precipitated in a silica-based glass by a heat-treatment method. After ultrafast laser
irradiation at 400 and 620 nm, optical absorption, birefringence, and ... ...
Exploration of synergism between a polymer matrix and gold nanoparticles for selective determination of dopamine
SS Kumar, J Mathiyarasu… - Journal of Electroanalytical …, 2005 - Elsevier
... The Au clusters are the spherical patches on the PEDOT strands. ... The increase
in oxidation current in the presence of Au nanoparticles is attributed to the
favourable weak adsorption of DA cations on gold particles [23]. ...
in oxidation current in the presence of Au nanoparticles is attributed to the
favourable weak adsorption of DA cations on gold particles [23]. ...
Dispersion of gold nanoparticles into thiol-functionalized carbon nanotubes by [gamma]-radiation
AM Showkat, KP Lee, AI Gopalan, SH Choi… - Diamond and related …, 2007 - Elsevier
... Fig. 3. An absorption band around 530 nm (low absorbance due to low concentration
of Au particles) (inset in Fig. 3), the typical plasma resonance band of spherical
gold nanoparticles, was observed [41], [42] and [43]. This ...
of Au particles) (inset in Fig. 3), the typical plasma resonance band of spherical
gold nanoparticles, was observed [41], [42] and [43]. This ...
Correlations between embedded single gold nanoparticles in SiO thin film and nanoscale crater formation induced by pulsed-laser radiation
S Papernov… - Journal of applied physics, 2002 - link.aip.org
... in Optical Materials: 2000, edited by GJ Exarhos, AH Guenther, MR Kozlowski, KL Lewis, and
MJ Soileau (“Using colloidal gold nanoparticles for studies ... MR Kozlowski, KL Lewis, and MJ
Soileau (“Simulations of laser damage of SiO[sub 2]induced by a spherical inclusion,” SPIE ...
MJ Soileau (“Using colloidal gold nanoparticles for studies ... MR Kozlowski, KL Lewis, and MJ
Soileau (“Simulations of laser damage of SiO[sub 2]induced by a spherical inclusion,” SPIE ...
Gold nanoelectrodes of varied size: transition to molecule-like charging
S Chen, RS Ingram, MJ Hostetler, JJ Pietron… - Science, 1998 - sciencemag.org
... Gold MPCs in particular are quite stable and can be prepared with average core ... Coulomb
staircases for nanoparticles are usually observed as tunneling currents through a single ... Dielectric
functions (ɛ 1 and ɛ 2 ) of the (assumed spherical) nanoparticles were computed from ...
staircases for nanoparticles are usually observed as tunneling currents through a single ... Dielectric
functions (ɛ 1 and ɛ 2 ) of the (assumed spherical) nanoparticles were computed from ...
X-ray studies of polymer/gold nanocomposites
B Lin, TL Morkved, M Meron, Z Huang… - Journal of applied …, 1999 - link.aip.org
... For PS-b-PVP on Si we expect PVP along the substrate and PS at the air surface, with one or
more layers of bulk-like spherical PVP domains in between (depending on the film thickness).
Gold nanoparticles, upon annealing, penetrate into the polymer film, diffuse inward, and ...
more layers of bulk-like spherical PVP domains in between (depending on the film thickness).
Gold nanoparticles, upon annealing, penetrate into the polymer film, diffuse inward, and ...
Dissipative particle dynamics simulation of gold nanoparticles stabilization by PEO–PPO–PEO block copolymer micelles
S Chen, C Guo, GH Hu, HZ Liu, XF Liang… - Colloid & Polymer …, 2007 - Springer
... In the simulated box, there are several spherical gold nanoparticles with almost the same size.
Their number-average diameters are calculated to be four DPD units, which correspond to about
3.6 nm in real spatial dimensions according to the length scale in our simulations. ...
Their number-average diameters are calculated to be four DPD units, which correspond to about
3.6 nm in real spatial dimensions according to the length scale in our simulations. ...
Shape-dependent catalytic activity of platinum nanoparticles in colloidal solution
R Narayanan… - Nano Letters, 2004 - ACS Publications
... This would also explain the trends observed for the tetrahedral and “near spherical” Pt
nanoparticles. ... Plasmonic nanostructures such as gold nanoparticles are very useful for monitoring
chemical reactions because their optical properties are highly dependent upon the ...
nanoparticles. ... Plasmonic nanostructures such as gold nanoparticles are very useful for monitoring
chemical reactions because their optical properties are highly dependent upon the ...
… spectroscopic investigation on the interaction between exciton transition of cyanine dye J-aggregates and localized surface plasmon polarization of gold nanoparticles
T Uwada, R Toyota, H Masuhara… - The Journal of Physical …, 2007 - ACS Publications
... 1 Light scattering spectra of single gold nanoparticles of different diameters [(a) 80, (b) 100, and
(c) 130 nm] modified with MUA in ethanol/water mixture (blue line) and in ethanol/water solution
(red line) of PIC (0.1 mM), and calculated spectra of spherical gold nanospheres in a ...
(c) 130 nm] modified with MUA in ethanol/water mixture (blue line) and in ethanol/water solution
(red line) of PIC (0.1 mM), and calculated spectra of spherical gold nanospheres in a ...
TEM observation of gold nanoparticles deposited on cerium oxide
T Akita, M Okumura, K Tanaka, M Kohyama… - Journal of materials …, 2005 - Springer
... precipitation method. (1) Gold particles are supported on CeO2 as hemi- spherical
nanoparticles with the preferential orien- tation relationship: (111)[1¯10]Au//(111)[
1¯10]CeO2 and (111)[1¯10]Au// (111)[¯110]CeO2 . (2) The ...
nanoparticles with the preferential orien- tation relationship: (111)[1¯10]Au//(111)[
1¯10]CeO2 and (111)[1¯10]Au// (111)[¯110]CeO2 . (2) The ...
Optimizing immersion media refractive index improves optical trapping by compensating sphericalaberrations
SNS Reihani, LB Oddershede - Optics letters, 2007 - opticsinfobase.org
... Moreover, the spherical aberrations can be compensated at any desired depth. The improved
trapping efficiency implies significantly less heating of the particles, thus diminishing previously
published concerns about using gold nanoparticles as handles for optical manipulation ...
trapping efficiency implies significantly less heating of the particles, thus diminishing previously
published concerns about using gold nanoparticles as handles for optical manipulation ...
Structure of gold nanoparticles suspended in water studied by X-ray diffraction and computer simulations
V Petkov, Y Peng, G Williams, B Huang, D Tomalia… - Physical Review B, 2005 - APS
... experimental data is better than that achieved with the fcc-lattice type model clearly showing that
the potential-based model cap- tures very well the essential structural features of 3 nm gold
nanoparticles in water. ... The model gold nanoparticle is spherical in shape ...
the potential-based model cap- tures very well the essential structural features of 3 nm gold
nanoparticles in water. ... The model gold nanoparticle is spherical in shape ...