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Abstract

Temperature-controlled reversible surface protrusions can be made on NiTi shape memory alloys and thin films as a result of indentation induced two-way shape memory effect. First, spherical indents or scratches are made on the surface of a NiTi alloy in its martensite phase. Second, the indented or scratched surface is planarized to restore a flat surface. Reversible circular and line protrusions are produced by altering the temperature to drive the martensite to austenite phase transformation. This phenomenon can be exploited for a wide range of optical, tribological, and microelectromechanical device applications.

Original languageEnglish
Article number041912
JournalApplied Physics Letters
Volume89
Issue number4
DOIs
StatePublished - 2006

Bibliographical note

Funding Information:
The authors are grateful to the National Science Foundation for partial support of this work under SGER Contract No. CMS0336810 and GOALI Contract No. CMS0510294.

Funding

The authors are grateful to the National Science Foundation for partial support of this work under SGER Contract No. CMS0336810 and GOALI Contract No. CMS0510294.

FundersFunder number
National Science Foundation (NSF)CMS0336810, CMS0510294

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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