Shape memory surfaces

Yijun Zhang, Yang Tse Cheng, David S. Grummon

Research output: Contribution to journalArticlepeer-review

56 Scopus citations


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
Issue number4
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.

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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