نتایج جستجو برای: radioactive gold nanoparticle

تعداد نتایج: 130349  

2015
Yang-Gang Wang Donghai Mei Vassiliki-Alexandra Glezakou Jun Li Roger Rousseau

Catalysis by gold supported on reducible oxides has been extensively studied, yet issues such as the nature of the catalytic site and the role of the reducible support remain fiercely debated topics. Here we present ab initio molecular dynamics simulations of an unprecedented dynamic single-atom catalytic mechanism for the oxidation of carbon monoxide by ceria-supported gold clusters. The repor...

Journal: :Nature materials 2015
Alex Pronschinske Philipp Pedevilla Colin J Murphy Emily A Lewis Felicia R Lucci Garth Brown George Pappas Angelos Michaelides E Charles H Sykes

High-energy radiation has been used for decades; however, the role of low-energy electrons created during irradiation has only recently begun to be appreciated. Low-energy electrons are the most important component of radiation damage in biological environments because they have subcellular ranges, interact destructively with chemical bonds, and are the most abundant product of ionizing particl...

Journal: :Colloids and surfaces. A, Physicochemical and engineering aspects 2012
Paul Vaccarello Linh Tran Julia Meinen Chuhee Kwon Yohannes Abate Young-Seok Shon

This article reports the preparation of gold plasmonic transducers using a nanoparticle self-assembly/heating method and the characterization of the films using scattering-type scanning near-field optical microscopy (s-SNOM). Nanoparticle-polymer multilayer films were prepared by the layer-by-layer assembly on glass slides by alternating exposures to monodisperse Au(25) nanoparticles and ionic ...

2014
Anil R. Mhashal Sudip Roy

This paper deals with the effect of different size gold nanoparticles on the fluidity of lipid membrane at different regions of the bilayer. To investigate this, we have considered significantly large bilayer leaflets and incorporated only one nanoparticle each time, which was subjected to all atomistic molecular dynamics simulations. We have observed that, lipid molecules located near to the g...

Journal: :Nature communications 2014
Nicholas I Smith Kentaro Mochizuki Hirohiko Niioka Satoshi Ichikawa Nicolas Pavillon Alison J Hobro Jun Ando Katsumasa Fujita Yutaro Kumagai

Nanoparticle manipulation is of increasing interest, since they can report single molecule-level measurements of the cellular environment. Until now, however, intracellular nanoparticle locations have been essentially uncontrollable. Here we show that by infusing a gold ion solution, focused laser light-induced photoreduction allows in situ fabrication of gold nanoparticles at precise locations...

2018
Jenny Bergman Yuanmo Wang Joakim Wigström Ann-Sofie Cans

To immobilize enzymes at the surface of a nanoparticle-based electrochemical sensor is a common method to construct biosensors for non-electroactive analytes. Studying the interactions between the enzymes and nanoparticle support is of great importance in optimizing the conditions for biosensor design. This can be achieved by using a combination of analytical methods to carefully characterize t...

2012
NOLAN HARRIS CHING-HWA KIANG Ching-Hwa Kiang

Submitted for the MAR05 Meeting of The American Physical Society Disorder in DNA-Linked Gold Nanoparticle Assemblies NOLAN HARRIS, CHING-HWA KIANG, Physics & Astronomy, Rice University — We report experimental observations of the effects of disorder on the phase behavior of DNA-linked nanoparticle networks. Variation in DNA linker lengths results in different melting temperatures, and hence sta...

Journal: :Cold Spring Harbor protocols 2011
Alexander R Dunn James A Spudich

Gold nanoparticles, like single fluorophores, can be used to locate single molecules with nanometer accuracy. Unlike an optical trap, the gold particle label does not exert an external load, which is important for studying diffusive processes. Thus, a gold particle can be used analogously to a single fluorophore, providing similar information but with submillisecond time resolution. The feature...

Journal: :Journal of Nanomedicine & Nanotechnology 2012

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