Results 211 to 220 of about 60,710 (268)

Spin-labelled Au nanoparticles

Faraday Discussions, 2004
A series of Au nanoparticles functionalised with nitroxide spin labels has been prepared and studied by EPR spectroscopy. Samples with low coverage of the spin label were used to investigate the dynamics of the surface-attached labels at different distances from the Au surface. The rotational correlation times of spin labels vary from 10(-10) s to more
Victor, Chechik, Helen J, Wellsted, Alexander, Korte, Bruce C, Gilbert, Horia, Caldararu, Petre, Ionita, Agneta, Caragheorgheopol   +6 more
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Tuning the Crystallinity of Au Nanoparticles

Small, 2010
10.1002/smll.200902033 ; Small ; 6 ; 4 ; 523 ...
Zhang, Q., Xie, J., Yu, Y., Yang, J., Lee, J.Y.   +4 more
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Phospholipid-Stabilized Au−Nanoparticles

Biomacromolecules, 2005
This communication outlines a simple two-step approach of modification of 1 nm diameter Au nanoparticles using an aqueous solution of (1,2-dipalmitoyl-sn-glycero-3-phosphothio-ethanol) phospholipid (PL). Transmission electron microscopy as well as particle size analysis show that, as a result of PL reactions with Au particles, the initial Au ...
He, Peng, Urban, Marek W.
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Bioanalytical Applications of Au Nanoparticles

Recent Patents on Nanotechnology, 2010
Nanoscale Au particles are received with significant interest in the recent years owing to their unique properties, which originate from the quantum scale dimension. Although colloidal Au has been known since ancient times for the decoration of glasses and for its curative powers, the technological importance has been understood only in the last two ...
Bikash K, Jena, Sourov, Ghosh, Rajkumar, Bera, Ramendra S, Dey, Ashok K, Das, C Retna, Raj   +5 more
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Thermal Contraction of Au Nanoparticles

Physical Review Letters, 2002
A fine Au powder, with a mean particle diameter of 4 nm, has been successfully fabricated. The crystalline structure of the 4 nm Au nanoparticles remains in fcc symmetry. No structural changes were found between 15 and 450 K. A crossover from a positive thermal expansion at low temperatures to a negative thermal expansion at high temperatures was ...
W-H, Li, S Y, Wu, C C, Yang, S K, Lai, K C, Lee, H L, Huang, H D, Yang   +6 more
openaire   +2 more sources

Au nanoparticle-imprinted polymers

Chemical Communications, 2005
Au nanoparticles protected with a polymerisable ligand were incorporated into bulk macroporous polymers; etching the metal core resulted in disulfide-lined, nanometre-scale cavities capable of recognising similarly-sized Au particles.
Stéphanie, Koenig, Victor, Chechik
openaire   +2 more sources

Optical nonlinearities of Au nanoparticles and Au/Ag coreshells

Optics Letters, 2009
Au nanoparticles exhibited both negative and positive nonlinear absorptions with ground-state plasmon bleaching and free-carrier absorption that could be origins of the saturable and reverse-saturable optical properties. Au/Ag coreshells displayed only positive nonlinear absorption and reverse-saturable optical properties as a function of excitation ...
Seo, JT Seo, Jae Tate, Yang, QG Yang, Qiguang, Kim, WJ Kim, Wan-Joong, Heo, J Heo, Jinhwa, Ma, SM Ma, Seong-Min, Austin, J Austin, Jasmine, Yon, WS Yon, Wan Soo, Jung, SS Jung, Sung Soo, Han, SW Han, Sang Woo, Tabibi, B Tabibi, Bagher, Temple, D Temple, Doyle   +10 more
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Synthetic Principles of Spiky Au Nanoparticles

ACS Applied Materials & Interfaces, 2023
In this work, the synthetic principles of spiky Au nanoparticles (spiky Au NPs) with an average number of spikes of less than or equal to six and controlled core sizes by using Au nanorods as seeds (Au-NR seeds) are summarized on the basis of the results of a series of control experiments.
Mengmeng Zhang, Mengjiao Hao, Xueling Tang, Yongchan Fan, Haibing Xia   +4 more
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Controlled synthesis of PbS–Au nanostar–nanoparticle heterodimers and cap-like Au nanoparticles

Nanoscale, 2010
Uniform PbS-Au nanostar-nanoparticle heterodimers consisting of one Au nanoparticle grown on one horn of a well-defined six-horn PbS nanostar were prepared using the PbS nanostars as growth substrates for the selective deposition of Au nanoparticles.
Nana, Zhao, Lianshan, Li, Teng, Huang, Limin, Qi   +3 more
openaire   +2 more sources