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ERIC Number: EJ1017406
Record Type: Journal
Publication Date: 2013-May
Pages: 14
Abstractor: As Provided
ISSN: ISSN-0031-9120
Educational Pathways through Nanoscience: Nitinol as a Paradigmatic Smart Material
Lisotti, Annamaria; De Renzi, Valentina; Rozzi, Carlo Andrea; Villa, Elena; Albertini, Franca; Goldoni, Guido
Physics Education, v48 n3 p298-311 May 2013
We developed an educational path based on nitinol, a shape memory alloy which conveniently exemplifies the smart material concept, i.e., a material that performs a predetermined, reversible action in response to a change in the environment. Nitinol recovers a given shape, changes its resistivity drastically and modifies its elastic properties if subjected to a temperature change in a convenient range. Here, the properties are verified with laboratory protocols appropriate to a high-school environment. Use of mobile electronic devices is also suggested. The collected electrical and mechanical properties are analysed within a didactic path which emphasizes their common physical origin, i.e., the martensitic transition. Moreover, the peculiarities of this solid-to-solid transformation are put in correspondence with the apparently unrelated but more familiar liquid-vapour transition. The relationship with possible applications is emphasized by measuring the efficiency of using a nitinol spring as an actuator.
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Publication Type: Journal Articles; Reports - Research
Education Level: High Schools
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A