نتایج جستجو برای: nanobeams

تعداد نتایج: 249  

2012
C. D. Krzeminski X.-L. Han G. Larrieu

In-depth understanding of the retarded oxidation phenomenon observed during the oxidation of silicon nanostructures is proposed. The wet thermal oxidation of various silicon nanostructures such as nanobeams, concave/convex nanorings, and nanowires exhibits an extremely different and complex behavior. Such effects have been investigated by the modeling of the mechanical stress generated during t...

Journal: :Applied sciences 2021

This paper presents a mathematical continuum model to investigate the static stability buckling of cross-ply single-walled (SW) carbon nanotube reinforced composite (CNTRC) curved sandwich nanobeams in thermal environment, based on novel quasi-3D higher-order shear deformation theory. The study considers possible nano-scale size effects agreement with nonlocal strain gradient theory, including ...

Journal: :Acta Mechanica 2022

Abstract This paper presents an investigation of the dynamic behavior bi-directionally functionally graded (BDFG) micro/nanobeams excited by a moving harmonic load. The formulation is established in context surface elasticity theory and modified couple stress to incorporate effects energy microstructure, respectively. Based on generalized parabolic shear deformation beam theory, nonclassical go...

Journal: :Nano letters 2006
Junqiao Wu Qian Gu Beth S Guiton Nathalie P de Leon Lian Ouyang Hongkun Park

We investigated the effect of substrate-induced strain on the metal-insulator transition (MIT) in single-crystalline VO(2) nanobeams. A simple nanobeam-substrate adhesion leads to uniaxial strain along the nanobeam length because of the nanobeam's unique morphology. The strain changes the relative stability of the metal (M) and insulator (I) phases and leads to spontaneous formation of periodic...

2011
Gary Shambat Bryan Ellis Jan Petykiewicz Marie A. Mayer Tomas Sarmiento James Harris Eugene E. Haller Jelena Vučković

We present results on electrically driven nanobeam photonic crystal cavities formed out of a lateral p-i-n junction in gallium arsenide. Despite their small conducting dimensions, nanobeams have robust electrical properties with high current densities possible at low drive powers. Much like their two-dimensional counterparts, the nanobeam cavities exhibit bright electroluminescence at room temp...

2015
D. Dutta S. Bhattacharyya S. Sahoo

Finite element analysis facilitates optimal design of MEMS/NEMS devices for reliability. The same is used here to analyze the effect of types of fractal rough surfaces on static response of nanobeams Three-dimensional rough surfaces are generated using modified two variable Weierstrass-Mandelbrot function with given fractal parameters. Beam with various fractal roughness are modelled to observe...

Journal: :Nano letters 2013
B J M Hausmann B J Shields Q Quan Y Chu N P de Leon R Evans M J Burek A S Zibrov M Markham D J Twitchen H Park M D Lukin M Lonc R

The realization of efficient optical interfaces for solid-state atom-like systems is an important problem in quantum science with potential applications in quantum communications and quantum information processing. We describe and demonstrate a technique for coupling single nitrogen vacancy (NV) centers to suspended diamond photonic crystal cavities with quality factors up to 6000. Specifically...

Journal: :International Journal of Mechanical Sciences 2017

Journal: :International Journal of Engineering Science 2018

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