Results 81 to 90 of about 237,278 (295)

Dynamic Study of a Capacitive MEMS Switch with Double Clamped-Clamped Microbeams

Shock and Vibration, 2014
We study a capacitive MEMS switch composed of two clamped-clamped exible microbeams. We first develop a mathematical model for the MEMS switch where the upper microbeam represents the ground transmission line and the lower one represents the central ...
Hatem Samaali, Fehmi Najar, Slim Choura
doaj   +1 more source

Triboelectric energy harvester with large bandwidth under harmonic and random excitations

Energy Reports, 2020
This paper investigates an approach to impact vibration energy harvesting using a triboelectric mechanism under harmonic and random excitation. The harvester consists of a clamped–clamped beam with a stiff plate in the middle to realize the impact ...
Alwathiqbellah Ibrahim, Abdallah Ramini, Shahrzad Towfighian   +2 more
doaj   +1 more source

Fabrication of Surface Micromachined AlN Piezoelectric Microstructures and its Potential Apllication to RF Resonators [PDF]

, 2005
We report on a novel microfabrication method to fabricate aluminum nitride (AlN) piezoelectric microstructures down to 2 microns size by a surface micromachining process.
Berenschot, E., Elwenspoek, M., Krijnen, G., Saravanan, S.   +3 more
core   +1 more source

Broadband opto-mechanical phase shifter for photonic integrated circuits

, 2012
A broadband opto-mechanical phase shifter for photonic integrated circuits is proposed and numerically investigated. The structure consists of a mode-carrying waveguide and a deformable non-mode-carrying nanostring, which are parallel with each other ...
Guo, Guang-Can, Guo, Xiang, Ren, Xi-Feng, Sun, Fang-Wen, Zou, Chang-Ling   +4 more
core   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Resistance Behaviours of Clamped HFR-LWC Beam Using Membrane Approach

International Journal of Concrete Structures and Materials
Beam-like members sustaining the combined action of transverse load and membrane force exhibit a special load response to progressive deflection. A theoretical model is therefore developed to depict the resistance behaviours of clamped reinforced ...
Wanxiang Chen, Jiawen Cai, Junxuan Huang, Xiaoyu Yang, Jianjun Ma   +4 more
doaj   +1 more source

Effect of Boundary Constraints on the Nonlinear Flapping of Filaments Animated by Follower Forces

, 2019
Elastically driven filaments subjected to animating compressive follower forces provide a synthetic way to mimic the oscillatory beating of active biological filaments such as eukaryotic cilia.
Fatehiboroujeni, Soheil, Gopinath, Arvind, Goyal, Sachin   +2 more
core  

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

Advanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch   +4 more
wiley   +1 more source

Effects of Ring Support and Internal Pressure on the Vibration Behavior of Multiple Layered Cylindrical Shells

Advances in Mechanical Engineering, 2013
This paper presents the study on natural frequency characteristics of a multiple layered cylindrical shell with ring support under internal pressure. The multiple layered cylindrical shell configuration is formed by three layers of isotropic materials ...
M. R. Isvandzibaei, H. Jamaluddin, R. I. Raja Hamzah   +2 more
doaj   +1 more source

Experimental signatures of the quantum-classical transition in a nanomechanical oscillator modeled as a damped driven double-well problem

, 2012
We demonstrate robust and reliable signatures for the transition from quantum to classical behavior in the position probability distribution of a damped double-well system using the Qunatum State Diffusion approach to open quantum systems.
Arie Kapulkin, Arjendu K Pattanayak, Brun T A, Chou P C, Dustin Anderson, Gardiner C W, Katz I, Landau L D, Lifshitz R, Pelesko J A, Percival I, Qi Li, Shao Min Tan, Werner P   +13 more
core   +1 more source