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The effect of solar irradiation on plasmonic silver nanocrystals has been investigated using Transmission Electron Microscopy and size distribution analysis, in the context of solar cell applications for light harvesting. Starting from an…

Materials Science · Physics 2013-04-09 Annett Thøgersen , Georg Muntingh

The freezing behavior of gold nanoclusters was studied by employing molecular dynamics simulations based on a semi-empirical embedded-atom method. Investigations of the gold nanoclusters revealed that, just after freezing, ordered…

Atomic and Molecular Clusters · Physics 2009-11-07 H. -S. Nam , Nong M. Hwang , B. D. Yu , J. -K. Yoon

To find the origin of the diffusion channels observed in sodium-silicate glasses, we have performed classical molecular dynamics simulations of Na$_2$O--4SiO$_2$ during which the mass of the Si and O atoms has been multiplied by a tuning…

Disordered Systems and Neural Networks · Physics 2009-11-07 E. Sunyer , P. Jund , R. Jullien

The structural evolution of laser-excited systems of gold has previously been measured through ultrafast MeV electron diffraction. However, there has been a long-standing inability of atomistic simulations to provide a consistent picture of…

Materials Science · Physics 2024-06-19 J. M. Molina , T. G. White

A large measured 2D diffusion coefficient of gold nanoclusters on graphite has been known experimentally and theoretically for about a decade. When subjected to a lateral force, these clusters should slide with an amount of friction that…

Materials Science · Physics 2007-07-14 Stoyan Pisov , Erio Tosatti , Ugo Tartaglino , Andrea Vanossi

Thin films of silver containing 0.3 - 1.5 at % Fe have been prepared by vapor co-deposition. Depending on substrate temperature and iron concentration we could systematically follow the formation of nanometer size clusters of iron from…

Strongly Correlated Electrons · Physics 2008-08-08 W. T. Herrera , S. M. Ramos , E. M. Baggio-Saitovitch , F. J. Litterst

In this letter, we study the scattering of light by a single subwavelength slit in a metal screen. In contrast to previous theoretical works, we provide a microscopic description of the scattering process by emphasizing the generation of…

Optics · Physics 2009-11-11 P. Lalanne , J. P. Hugonin , J. C. Rodier

Au nanoparticles, prepared by thermal evaporation under high vacuum condition on Si substrate, are irradiated with Au ions at different ion energies. During ion irradiation, embedding of nanoparticles as well as ejection of nano-clusters is…

Materials Science · Physics 2007-05-23 B. Satpati , J. Ghatak , B. Joseph , P. V. Satyam , T. Som , D. Kabiraj , B. N. Dev

Low energy alkali ion scattering is used to investigate the deposition of Au onto a single layer of graphene grown onto Ni(111) by chemical vapor deposition. The yield of 3.0 keV Na$^+$ singly scattered from Au as a function of coverage…

Mesoscale and Nanoscale Physics · Physics 2018-12-26 Jory A. Yarmoff , Christopher Salvo

The sol-gel silica glasses doped with copper selenide nanoparticles were studied through small-angle neutron scattering (SANS) and transmission electron microscopy. SANS intensities demonstrate the complicated dependence on the scattering…

Mesoscale and Nanoscale Physics · Physics 2021-12-03 V. S. Gurin , A. V. Rutkauskas , Yu. E. Gorshkova , S. E. Kichanov , A. A. Alexeenko , D. P. Kozlenko

The shape and alignment of silver nanoparticles embedded in a glass matrix is controlled using silicon ion irradiation. Symmetric silver nanoparticles are transformed into anisotropic particles whose larger axis is along the ion beam. Upon…

The neutralization of low energy Na$^+$ and Li$^+$ ions scattered from Au nanoclusters formed by deposition onto oxide surfaces decreases as the cluster size increases. An explanation for this behavior is provided here, which is based on…

Mesoscale and Nanoscale Physics · Physics 2018-08-08 Christopher Salvo , Prasanta Karmakar , Jory Yarmoff

Diffusion of ions due to temperature gradients (known as thermal diffusion) in charged nanochannels is of interest in several engineering fields, including energy recovery and environmental protection. This paper presents a fundamental…

Chemical Physics · Physics 2022-12-06 Wei Qiang Chen , Majid Sedighi , Andrey P Jivkov

The effects of spin-orbit scattering on discrete electronic energy levels are studied in copper, silver, and gold nanoparticles. Level-to-level fluctuations of the effective $g$-factor for Zeeman splitting are characterized, and the…

Mesoscale and Nanoscale Physics · Physics 2012-10-19 J. R. Petta , D. C. Ralph

We report on measurements of visible extinction spectra of semicontinuous silver nanoshells grown on colloidal silica spheres. We find that thin, fractal shells below the percolation threshold exhibit geometrically tunable plasmon…

Optics · Physics 2009-11-11 Charles A. Rohde , Keisuke Hasegawa , Miriam Deutsch

In this paper, we present new models of germanium selenide chalcogenide glasses heavily doped with silver. The models were readily obtained with ab initio molecular dynamics and their structure agrees closely with diffraction measurements.…

Disordered Systems and Neural Networks · Physics 2009-11-11 De Nyago Tafen , D. A. Drabold , M. Mitkova

A spectral technique is applied to evaluate the resonance frequencies of the full retarded scattering from spherical nanoparticles. This approach allows one to unambiguously identify the modes that are responsible of both the peaks and the…

Optics · Physics 2017-02-15 Carlo Forestiere , Giovanni Miano

Copper nanoparticles have been grown in silica matrix by annealing of the sol-gel prepared porous matrix impregnated with the copper nitrate. The annealing has been performed in air, successively in air and hydrogen, and in hydrogen. Cu…

Materials Science · Physics 2007-05-23 Oleg A. Yeshchenko , Igor. M. Dmitruk , Andriy M. Dmytruk , Alexandr A. Alexeenko

The evolution of the nanoporous structure of cylindrical sintered silver samples during high temperature aging, ranging from 200 {\textdegree}C to 350 {\textdegree}C for 350 min, is studied through in-situ Computed X-Ray Tomography.…

The purpose of this work is to calculate the vibrational modes of an elastically anisotropic sphere embedded in an isotropic matrix. This has important application to understanding the spectra of low-frequency Raman scattering from…

Mesoscale and Nanoscale Physics · Physics 2010-09-29 L. Saviot , D. B. Murray , E. Duval , A. Mermet , S. Sirotkin , M. C. Marco de Lucas