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We study oblique incident light absorption in opaque media with rough surfaces. An analytical approach with modified boundary conditions taking into account the surface roughness in metallic or dielectric films has been discussed. Our…

Optics · Physics 2024-01-30 V. Gareyan , Zh. Gevorkian

The infrared range optical absorption mechanism of Carbon-Copper composite thin layer coated on the Diamond-Like Carbon (DLC) buffer layer has been investigated. By consideration of weak interactions between copper nanoparticles in their…

A systematic experimental and theoretical study about substrate induced molecular conformation in rubrene thin films by varying film thickness from sub-monolayer to multilayer, which currently attracts substantial attention with regard to…

Mesoscale and Nanoscale Physics · Physics 2016-11-28 Sumona Sinha , Chia-Hsin Wang , Manbendra Mukherjee , Tapas Mukherjee

In this work, we have studied theoretically the effects of gold adsorption on the Al(001) surface, using {\it ab initio} pseudo-potential method in the framework of the density functional theory. Having found the hollow sites at the Al(001)…

Materials Science · Physics 2009-11-13 N. Zare Dehnavi , M. Payami

In quartz crystal microbalance (QCM) studies of the friction between an adsorbed monolayer film and a metallic substrate, the films are observed to slide relative to the substrate under inertial forces of order $10^{-14}dyn$ per film atom,…

Materials Science · Physics 2007-05-23 J. B. Sokoloff , I. Webman

We measure the absolute absorption cross section of molecules using a matter-wave interferometer. A nanostructured density distribution is imprinted onto a dilute molecular beam through quantum interference. As the beam crosses the light…

Quantum Physics · Physics 2014-08-20 Sandra Eibenberger , Xiaxi Cheng , J. P. Cotter , Markus Arndt

The adsorption of three different polycations at the negatively charged surface of tubular J-aggregates of the amphiphilic cyanine dye 3,3'-bis(2-sulfopropyl)-5,5',6,6'-tetrachloro-1,1'-dioctylbenzimidacarbocyanine (C8S3) is investigated by…

Using helium-3 atom scattering, we have studied the adsorption kinetics, the structure and the diffusional dynamics of atomic hydrogen on the surface of a graphene monolayer on Ni(111). Diffraction measurements reveal a 4$^\circ$ rotated…

Mesoscale and Nanoscale Physics · Physics 2022-12-15 Emanuel Bahn , Anton Tamtögl , John Ellis , William Allison , Peter Fouquet

The adsorption equilibrium constants of monovalent and divalent cations to material surfaces in aqueous media are central to many technological, natural, and geochemical processes. Cation adsorption/desorption is often proposed to occur in…

Some hot DA stars exhibit circumstellar absorption in the metal resonance lines in their spectra. In many cases, these circumstellar features are unresolved from those originating in the photosphere. To better understand the effect this…

Solar and Stellar Astrophysics · Physics 2012-09-25 Nathan J. Dickinson , Martin A. Barstow , Barry Y. Welsh

We present a density functional study of the structural and electronic properties of small Cu_n (n=1,4) aggregates on defect-free MgO(100). The calculations employ a slab geometry with periodic boundary conditions, supercells with up to 76…

Materials Science · Physics 2009-10-30 V. Musolino , A. Selloni , R. Car

Motivated by recent in situ studies of carbon nanotube growth from large transition-metal nanoparticles, we study various alpha-iron (ferrite) facets at different carbon concentrations using ab initio methods. The studied (110), (100) and…

Chemical Physics · Physics 2015-05-19 S. Riikonen , A. V. Krasheninnikov , R. M. Nieminen

We investigate 1D aperiodic multilayer microstructures in order to achieve near total absorption in preselected wavelengths in a graphene monolayer. Our structures are designed by a genetic optimization algorithm coupled to a transfer…

Optics · Physics 2018-03-14 Iman Zand , Hamed Dalir , Ray T. Chen , Jonathan P. Dowling

This paper presents a DFT study for phosphine adsorption on a Si(001)-2$\times$1 surface covered by a chlorine monolayer, including adsorption on local defects, i.e. mono- and bivacancies in the adsorbate layer (Cl, Cl$_2$), and combined…

Materials Science · Physics 2019-01-04 Tatiana V. Pavlova , Georgy M. Zhidomirov , Konstantin N. Eltsov

We have calculated the adsorption energy of carbon monoxide on a monolayer of copper adsorbed on the (111) face of cubic zirconia. We investigate the structural parameters of three phases of bulk zirconia (cubic, tetragonal, and monoclinic)…

Materials Science · Physics 2007-05-23 Eric J. Walter , Steven P. Lewis , Andrew M. Rappe

We study the influence of different metallic substrates on the electron induced heating and heat dissipation of single C60 molecules in the junction of a low temperature scanning tunneling microscope. The electron current passing through…

Materials Science · Physics 2009-11-13 Gunnar Schulze , Katharina J. Franke , Jose Ignacio Pascual

Metallic layers are known to be used for the suppression of wave transmission when their thickness is sufficiently higher than the skin depth of metal. If in addition to blocking the transmission, metallic layers have the feature of…

We report on experimental evidence for the formation of a two dimensional Si/Au(110) surface alloy. In this study, we have used a combination of scanning tunneling microscopy, low energy electron diffraction, Auger electron spectroscopy and…

Recently we have predicted [Phys. Rev. Lett. May 2005(cond-mat/0504694)] that Ti-decorated carbon nanotubes can absorb up to 8-wt% hydrogen at ambient conditions. Here we show that similar phenomena occurs in light transition-metal…

Materials Science · Physics 2009-11-11 T. Yildirim , J. Iniguez , S. Ciraci

We study the effect of surface adsorption of 27 different adatoms on the electronic and magnetic properties of monolayer black phosphorus using density functional theory. Choosing a few representative elements from each group, ranging from…

Mesoscale and Nanoscale Physics · Physics 2015-08-10 Priyank Rastogi , Sanjay Kumar , Somnath Bhowmick , Amit Agarwal , Yogesh Singh Chauhan
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