Extended Pseudomorphic Limits Using Compliant Substrates

1992 ◽  
Vol 281 ◽  
Author(s):  
Y. H. Lo ◽  
W. J. Schaff ◽  
D. Teng
Keyword(s):  
Dynamic Model ◽  
Equilibrium Model ◽  
Thermal Equilibrium ◽  
Membrane Structure ◽  
Critical Thickness ◽  
Strain Relaxation ◽  
Substrate Thickness ◽  
New Approach ◽  
Supported Membrane ◽  
Compliant Substrates

ABSTRACTWe propose a new approach, growth on compliant substrates, to achieve extended pseudomorphic limits. The compliant substrate can be approximately achieved with a corner supported membrane structure. Both thermal equilibrium model and dynamic model considering strain relaxation are used to analyze the relations between the extended critical thickness and the substrate thickness. Preliminary experimental results of InGaAs grown on GaAs membranes seem to support the theories.

Modeling of Shape Memory Alloy Actuators Using Matlab and dSpace Platform

2010 ◽  
Vol 166-167 ◽  
pp. 149-154
Author(s):  
Ioan Adrian Cosma ◽  
Vistrian Măties ◽  
Ciprian Lapusan ◽  
Rares Ciprian Mîndru
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Dynamic Model ◽  
Dynamic Equations ◽  
Control Technique ◽  
Positioning System ◽  
Unknown Parameters ◽  
New Approach ◽  
Model Based Control ◽  
Input And Output

The aim of the paper is to describe an approach for modeling the dynamic behavior of a positioning system actuated by two shape memory alloy springs, placed in opposition. The mathematical analysis of the system in order to develop the dynamic model is difficult in this case because of the unknown parameters within the dynamic equations (thermodynamics, change in austenite fraction) and therefore a new approach is presented. Thus, a positioning system is considered, and its behavior is determined using Matlab Software, D-space platform and an optical sensor, which analyses the position/velocity of the moving cart. The dynamic model of the system is determined in order to develop a further model based control technique. The model is generated using system identification toolbox within Matlab and input and output (response) of the considered system.

scholarly journals In-place bonded semiconductor membranes as compliant substrates for III–V compound devices

Nanoscale ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 3748-3756
Author(s):  
Ailton J. Garcia Jr. ◽  
Leonarde N. Rodrigues ◽  
Saimon Filipe Covre da Silva ◽  
Sergio L. Morelhão ◽  
Odilon D. D. Couto Jr. ◽  
...  
Keyword(s):  
Critical Thickness ◽  
Compliant Substrates ◽  
Fundamental Challenge ◽  
Pseudomorphic Growth

Overcoming the critical thickness limit in pseudomorphic growth of lattice mismatched heterostructures is a fundamental challenge in heteroepitaxy.

A model of strain relaxation in hetero-epitaxial films on compliant substrates

1998 ◽  
Vol 66 (1) ◽  
pp. 13-22 ◽  
Author(s):  
G. Kästner ◽  
U. Gösele ◽  
T.Y. Tan
Keyword(s):  
Strain Relaxation ◽  
Epitaxial Films ◽  
Compliant Substrates

scholarly journals Numerical study on the effects of opening form on the deflation for an air-supported membrane structure

2019 ◽  
Vol 13 ◽  
pp. 100404 ◽  
Author(s):  
Jinju Zhou ◽  
Guoqing Zhu ◽  
Yunji Gao ◽  
Shuai Gao ◽  
Guoqiang Chai
Keyword(s):  
Membrane Structure ◽  
Numerical Study ◽  
Supported Membrane
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