The aim of this paper is to deal with multi-physics simulation of micro-electro-mechanical systems (MEMS) based on an advanced numerical methodology. MEMS are very small devices in which electric as well as mechanical and fluid phenomena appear and interact. Because of their microscopic scale, strong coupling effects arise between the different physical fields, and some forces, which were negli...

Nanomechanics of Nucleic Acid Structures Investigated with AFM Based Force Spectroscopy by Mahir Rabbi Department of Mechanical Engineering and Materials Science, Duke University December 08, 2010 ________________________________________________________ Piotr Marszalek, Supervisor ________________________________________________________ David Beratan ____________________________________________...

We present ultra low-cycle fatigue experiments of axisymmetric nano-crystalline gold films of nano-thickness deformed by a spherical indenter using a recently developed freestanding membrane test. Freestanding membranes of gold were centrally deflected using a spherical indenter attached to a MEMS load cell. Fabrication of the films for these experiments yielded films 100 nm thick and 500 μm in...

Electric field control of magnetism provides a promising route towards ultralow power information storage and sensor technologies. The effects of magneto-ionic motion have been prominently featured in the modification of interface characteristics. Here, we demonstrate magnetoelectric coupling moderated by voltage-driven oxygen migration beyond the interface in relatively thick AlOx/GdOx/Co(15 n...

We design a magneto-electro-elastic piezoelectric phononic crystal (MPPC) using one-dimensional superlattice (with 3m point group) and split-ring resonators. The effect of the resonators is to enhance superlattices. This will create elastic anomalies generate band gaps. These are first proposed theoretically. calculate transmission function MPPC through Transfer Matrix Method crystal. By functi...

A new class of hybrid systems that couple optical, electrical and mechanical degrees of freedom in nanoscale devices is under development in laboratories worldwide. These nano-opto-electro-mechanical systems (NOEMS) offer unprecedented opportunities to control the flow of light in nanophotonic structures, at high speed and low power consumption. Drawing on conceptual and technological advances ...

This paper introduces a novel harvester to store the electrical power, which comes from power of external applied voltage. In last decade, most energy harvesters have been designed and analyzed in form cantilever beams. present article, are as beam with Euler-Bernoulli assumptions. The consists an active Magneto-electro-elastic (MEE) layer attached piezoelectric layer. Assuming that connection ...

This paper describes our views on how to detect faults in low testability analog or mixed mode (analog electro-mechanical) system. A new method is developed to identify a minimum number of faulty parameters in the system with ambiguities. From sensitivity analysis of the system, we can extract solution invariant matrix and identify singular cofactors of this matrix. The approach can be extended...