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It is shown that optomechanical forces can cause nonlinear self-channelling of light in a planar dual-slab waveguide. A system of two parallel silica nanowebs, spaced ~100 nm and supported inside a fibre capillary, is studied theoretically…

光学 · 物理学 2012-03-06 Anna Butsch , Claudio Conti , Fabio Biancalana , Philip St. J. Russell

We investigate instability and dynamical properties of nanoelectromechanical systems represented by a single-electron device containing movable quantum dot attached to a vibrating cantilever via asymmetric tunnel contact. The Kondo…

介观与纳米尺度物理 · 物理学 2014-04-02 Taegeun Song , Mikhail N. Kiselev , Konstantin Kikoin , Robert I. Shekhter , Leonid Y. Gorelik

The properties of any material are the basis for the most diverse applications of science, which allows for the dazzling development of new technologies. In this work, we studied the main properties of nanostructures synthesized under…

材料科学 · 物理学 2024-09-24 Luana Hildever , Thiago Ferro , Francisco Estrada , José Holanda

Room-temperature ferromagnetism (RTFM) exhibited by nanostructured two-dimensional semiconductors for spintronics applications is a fascinating area of research. The present work reports on the correlation between the electronic structure…

We report that ice nanotubes with odd number of side faces inside carbon nanotubes exhibit spontaneous electric polarization along its axes direction by using molecular dynamics simulations. The mechanism of this nanoscale…

材料科学 · 物理学 2015-06-25 Chuanfu Luo , Wei Fa , Jinming Dong

We propose an experimentally viable setup for the realization of one-dimensional ultracold atom gases in a nanoscale magnetic waveguide formed by two doubly-clamped suspended carbon nanotubes. All common decoherence and atom loss mechanisms…

其他凝聚态物理 · 物理学 2007-05-23 V. Peano , M. Thorwart , C. Mora , R. Egger

Two paramount challenges in carbon nanotube research are achieving chirality-controlled synthesis and understanding chirality-dependent device physics. High-throughput and in-situ chirality and electronic structural characterization of…

介观与纳米尺度物理 · 物理学 2015-06-16 Kaihui Liu , Xiaoping Hong , Qin Zhou , Chenhao Jin , Jinghua Li , Weiwei Zhou , Jie Liu , Enge Wang , Alex Zettl , Feng Wang

We demonstrate high quantum yield broad photoluminescence emission of ultrathin sub-nanometer CdSe nanoplatelets (two-monolayer). They also exhibit polarization-characterized lateral size dependent anomalous heavy hole and light/split-off…

Atomically flat semiconductor nanostructures have sharp photoluminescence emission, short radiative lifetimes and a well-defined planar structure. However, these nanostructures lack the optical and electronic fine-tuning that justify…

材料科学 · 物理学 2015-09-29 Sébastien Lamarre , Étienne Rochette , Samuel Tremblay , Claudine Nì. Allen

One-dimensional (1D) confinement has been revealed to effectively tune the properties of materials in homogeneous states. The 1D physics can be further enriched by electronic inhomogeneity, which unfortunately remains largely unknown. Here…

The durability of passivable metals and alloys is often limited by the stability of the surface oxide film, the passive film, providing self-protection against corrosion in aggressive environments. Improving this stability requires to…

材料科学 · 物理学 2019-07-26 Li Ma , Frederic Wiame , Vincent Maurice , Philippe Marcus

Photonic crystal nanocavities are used to enhance photoluminescence from single-walled carbon nanotubes. Micelle-encapsulated nanotubes are deposited on nanocavities within Si photonic crystal slabs and confocal microscopy is used to…

介观与纳米尺度物理 · 物理学 2012-10-12 R. Watahiki , T. Shimada , P. Zhao , S. Chiashi , S. Iwamoto , Y. Arakawa , S. Maruyama , Y. K. Kato

We demonstrate control over optical coupling between air-suspended carbon nanotubes and air-mode nanobeam cavities by spectral tuning. Taking advantage of the large dielectric screening effects caused by adsorbed molecules, laser heating is…

介观与纳米尺度物理 · 物理学 2018-08-24 H. Machiya , T. Uda , A. Ishii , Y. K. Kato

We report here investigations on the instability in luminescence of bare (TOPO-stabilized) and CdS- capped CdSe particles under infrared radiation. During photo-thermal annealing the formation of oxide layers on the surfaces of the…

材料科学 · 物理学 2009-11-11 A. Singha , A. Roy

We introduce transition metal-dichalcogenide (TMD) nanostructures as a promising platform for the realisation of structural colours. Processing of semianalytically calculated reflectance spectra of TMD nanosphere arrays shows a wide range…

介观与纳米尺度物理 · 物理学 2026-04-28 Ida Juliane Bundgaard , Catarina G. Ferreira , Yonas Lebsir , Christos Tserkezis

We propose a fast method to determine the local curvature in two-dimensional (2D) systems with arbitrary shape. The curvature information, combined with elastic constants obtained for a planar system, provides an accurate estimate of the…

材料科学 · 物理学 2014-12-02 Jie Guan , Zhongqi Jin , Zhen Zhu , Chern Chuang , Bih-Yaw Jin , David Tománek

The spintronic properties of curved nanostructures derived from two-dimensional topological insulators (2DTI's) are explored theoretically with density functional theory-based (DFT) calculations and tight-binding models. We show that curved…

介观与纳米尺度物理 · 物理学 2021-01-06 Alireza Saffarzadeh , George Kirczenow

The inherent network of nanopores and voids in silicon dioxide (SiO2) is generally undesirable for aspects of film quality, electrical insulation and dielectric performance. However, if we view these pores as natural nano-patterns embedded…

Nanoscience offers a unique opportunity to design modern materials from the bottom up, via low-cost, solution processed assembly of nanoscale building blocks. These systems promise electronic band structure engineering using not only the…

介观与纳米尺度物理 · 物理学 2018-08-06 Yingjie Zhang , Youngseok Kim , Matthew J. Gilbert , Nadya Mason

The process of environmental oxidation is pivotal in determining the physical and chemical properties of two-dimensional (2D) materials. Its impact holds great significance for the practical application of these materials in nanoscale…

材料科学 · 物理学 2024-03-20 Soumendra Kumar Das , Lokanath Patra , Prasanjit Samal , Pratap Kumar Sahoo