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Method and apparatus for adjustably induced biaxial strain

United States Patent

May 16, 2006
View the Complete Patent at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
An apparatus comprising a shape memory alloy is configured as a ring shaped sample holder for a transmission electron microscope and imparts uniform biaxial strain on a thin film mounted within. The sample holder responds to a change in temperature by changing the inner diameter, which imparts biaxial strain. In other embodiments, the sample holder is configured to change the inner diameter and change the strain on a thin film reversibly and repeatedly. In further embodiments, the sample holder is non circular. In still further embodiments, the apparatus is configured as a prime mover of a reversible radial actuator. Methods for making and using the apparatus are included in other embodiments.
Vestel; Michael J. (San Francisco, CA), Oshatz; Daryl Patrick (Oakland, CA)
The Regents of the University of California (Oakland, CO)
10/ 837,027
April 30, 2004
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under Grant No. DE-AC03-76SF00098, awarded by the Department of Energy. The Government has certain rights in this invention.