Stability of shape memory characteristics against cyclic deformation in Ti-Ni sputter-deposited thin films

Author(s):  
Kuniaki Nomura ◽  
Shuichi Miyazaki
1995 ◽  
Author(s):  
Shuichi Miyazaki ◽  
Takanori Hashinaga ◽  
Kazuya Yumikura ◽  
Hiroshi Horikawa ◽  
Tatsuhiko Ueki ◽  
...  

MRS Bulletin ◽  
2002 ◽  
Vol 27 (2) ◽  
pp. 111-114 ◽  
Author(s):  
Akira Ishida ◽  
Valery Martynov

AbstractShape-memory alloy (SMA) thin films formed by sputter deposition have attracted considerable attention in the last decade. Current intensive research demonstrates that unique fine microstructures are responsible for the superior shape-memory characteristics observed in thin films as compared with bulk materials. Simultaneously, much effort has been undertaken to develop and fabricate micro devices actuated by SMA thin films. This article reviews the research to date on shape-memory behavior and the mechanical properties of SMA thin films in connection with their peculiar microstructures. Promising applications such as microvalves are demonstrated, along with a focused discussion on process-related problems. All of the results indicate that thin-film shape-memory actuators are ready to contribute to the development of microelectromechanical systems.


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