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This study employs molecular dynamics simulations to examine the physisorption behavior of hydrocarbon molecules on a covalent graphene-nanotube hybrid nanostructure. The results indicate that the adsorbed molecules undergo self-diffusion…

Mesoscale and Nanoscale Physics · Physics 2023-07-18 Zhao Wang

Plasmonics offer an exciting way to mediate the interaction between light and matter, allowing strong field enhancement and confinement, large absorption and scattering at resonance. However, simultaneous realization of ultra-narrow band…

Optics · Physics 2016-01-06 Zhengdong Yong , Senlin Zhang , Chengsheng Gong , Sailing He

We present a simple closed expression for determining the condition for Coherent Perfect Absorption derived through electromagnetic wave treatment and interface boundary conditions. Apart from providing physical insight this expression can…

Optics · Physics 2017-08-17 Sanjeeb Dey , Suneel Singh

We address the issue of inter-particle dipolar interactions in the context of magnetic hyperthermia. More precisely, the main question dealt with here is concerned with the conditions under which the specific absorption rate is enhanced or…

Mesoscale and Nanoscale Physics · Physics 2017-06-05 J. -L. Déjardin , F. Vernay , M. Respaud , H. Kachkachi

We consider theoretically a superlattice formed by thin conducting layers separated spatially between insulating layers. The dispersion of two coupled phonon-plasmon modes of the system is analyzed by using Maxwell's equations, with the…

Materials Science · Physics 2009-11-11 L. A. Falkovsky , E. G. Mishchenko

We present direct experimental observation of exciton-phonon bound states in the photoluminescence excitation spectra of isolated single walled carbon nanotubes in aqueous suspension. The photoluminescence excitation spectra from several…

Materials Science · Physics 2009-11-11 Flavio Plentz , Henrique B. Ribeiro , Ado Jorio , Marcos A. Pimenta , Michael S. Strano

We study the dynamics of single-photon absorption by a single emitter coupled to a one-dimensional waveguide that simultaneously provides channels for spontaneous emission decay and a channel for the input photon. We have developed a…

Optics · Physics 2012-08-21 Yuntian Chen , Martijn Wubs , Jesper Mork , A. Femius Koenderink

We formulate and study the effective low-energy quantum theory of interacting long-wavelength acoustic phonons in carbon nanotubes within the framework of continuum elasticity theory. A general and analytical derivation of all three- and…

Mesoscale and Nanoscale Physics · Physics 2009-05-14 A. De Martino , R. Egger , A. O. Gogolin

General analytic expressions for the total absorption coefficient of strong electromagnetic waves caused by confined electrons in Infinite semi-parabolic plus Semi-inverse Squared Quantum Wells (ISPSISQW) are obtained by using the quantum…

Mesoscale and Nanoscale Physics · Physics 2024-12-25 Cao Thi Vi Ba , Nguyen Quang Bau , Anh-Tuan Tran , Tang Thi Dien

We report a comparative ab-initio study of different types of adsorbates and their adsorption mechanism on the field-emission performance of single-walled carbon nanotubes by analyzing electrical properties and transport characteristics and…

Materials Science · Physics 2019-02-15 Ehsanur Rahman , Alireza Nojeh

Based on the quantum transport equation for the electron-phonon system, the absorption coefficient of sound (acoustic phonons) by absorption of laser radiation in cylindrical quantum wires is calculated for the case of monophoton absorption…

Condensed Matter · Physics 2007-05-23 Nguyen Quoc Hung , Nguyen Vu Nhan , Nguyen Quang Bau

The Coulomb contribution to the temperature-dependent rate of momentum transfer, $1/\tau_D$, between two electron systems in parallel layers is determined by setting up two coupled Boltzmann equations, with the boundary condition that no…

Condensed Matter · Physics 2009-10-22 Antti-Pekka Jauho , Henrik Smith

We study the dynamics of single-photon absorption by a single emitter coupled to a one-dimensional waveguide that simultaneously provides channels for spontaneous emission decay and a channel for the input photon. We have developed a…

Optics · Physics 2016-08-14 Yuntian Chen , Martijn Wubs , Jesper Mørk , A. Femius Koenderink

We investigate theoretically the spatial dependence of the linear absorption spectra of single and coupled semiconductor quantum dots, where the strong three-dimensional quantum confinement leads to an overall enhancement of Coulomb…

Materials Science · Physics 2009-10-31 C. Simserides , U. Hohenester , G. Goldoni , E. Molinari

The differential rates and emissivities of neutrino pairs from an equilibrium plasma are calculated for the wide range of density and temperature encountered in astrophysical systems. New analytical expressions are derived for the…

Astrophysics · Physics 2009-11-07 Sasa Ratkovic , Sharada Iyer Dutta , Madappa Prakash

We present systematic and comprehensive correlated-electron calculations of the linear photoabsorption spectra of small neutral closed- and open-shell sodium clusters (Na_{n}, n=2-6), as well as closed-shell cation clusters (Na_{n}^{+},…

Atomic and Molecular Clusters · Physics 2017-05-25 Pradip Kumar Priya , Deepak Kumar Rai , Alok Shukla

Further development of a previously introduced method for numerically simulating magnetic spin waves is presented. Together with significant improvements in speed, the method now allows one to calculate the energy absorbed by the various…

Materials Science · Physics 2009-11-11 K. Rivkin , J. B. Ketterson

Determination of optical absorption cross-section is always among the central importance of understanding a material. However its realization on individual nanostructures, such as carbon nanotubes, is experimentally challenging due to the…

We show that observing the trajectories of confined particles in a thermal equilibrium state yields an estimate on the free-space diffusion coefficient. For generic trapping potentials and interactions between particles, the estimate comes…

Statistical Mechanics · Physics 2019-10-22 Andreas Dechant

In this paper we study, in the time domain, the interaction between localized surface plasmons and photons in arbitrarily shaped metal nanoparticles, by using the Hopfield approach to quantize the plasmon modes, where the electron…