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Stretching silicon: A new method to measure how strain affects semiconductors
Date:11/3/2008

r readings the required high energy resolution.

By measuring nanomembranes with different percentages of strain, the researchers have determined the direction and magnitude of shifts in the conduction bands. Their findings have shed light on divergent theories and uncovered some surprising properties. Understanding these properties, and the energy shifts in strained materials, could lead to the improvement of fast, flexible electronic devices.

Capitalizing on its techniques for fabricating silicon nanomembranes, the group hopes to use SRC resources to study strain in other semiconductor materials, as well as to make measurements over smaller areas to study the effects of localized strain.

"The ability to make membranes of various materials, to strain them, and make these measurements will enable us to determine strain-dependent band structure of all kinds of semiconductor materials," says Lagally.


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Contact: Max Lagally
lagally@engr.wisc.edu
608-263-2078
University of Wisconsin-Madison
Source:Eurekalert

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