Nano Science and Technology InstituteNano Science and Technology Institute
Nano Science and Technology Institute 2003 NSTI Nanotechnology Conference & Trade Show
Nanotech 2003
BioNano 2003
Program
Sunday
Monday
Tuesday
Wednesday
Thursday
Index of Authors
2003 Sub Sections
Proceedings
Organization
Press Room
Sponsors
Exhibitors
Venue
Organizations
NSTI Events
Subscribe
Site Map
Nanotech Proceedings
Nanotechnology Proceedings
Supporting Organizations
Supporting Organizations
Event Contact
696 San Ramon Valley Blvd., Ste. 423
Danville, CA 94526
Ph: (925) 353-5004
Fx: (925) 886-8461
E-mail:
 
 

Numerical Simulations of Residual Stresses and Their Effects on Electronic Properties in Quantum Dots

B. Vlahovic, V. Suslov and K. Wang
North Carolina Central University, US

Keywords: Quantum dots, residual stresses, electronic and optical properties

Abstract:
A finite element method has been utilized to simulate the residual stress distributions in the quantum dots. Both lattice mismatch and thermal expansion effects are included. Our calculation indicates that the residual stresses concentrate at the edge and the interface of the sample. The dominant effect which causes the residual stress is the lattice mismatch between quantum dot material and the substrate. The effects of residual stresses on the electronic and optical properties are also studied. The additional potential field induced by the residual strain has been included in the time-independent Schrödinger equation to calculate the energies and wave functions. The finite-difference method was applied to solve the confined state problem. The density of states can be obtained from the spectrum of the eigenstates in the numerical solutions. The effects of size, strain, composition and other parameters can be seen directly from the density of states. Comparison with available data, such as measurements of transport properties will be provided.

NSTI Nanotech 2003 Conference Technical Program Abstract

 
Featured Sponsors
Nanotech Sponsors
News Headlines
NSTI Online Community
 
 

© Nano Science and Technology Institute, all rights reserved.
Terms of use | Privacy policy | Contact