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Proceedings Paper

Elastic and magneto-elastic modeling of Galfenol nanowires
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Paper Abstract

This paper presents a magneto-elastic model developed by coupling a finite element elastic and magnetic formulations with an energy based probabilistic magnetostrictive model. Unidirectional coupled model is presented first for both sensor and actuator applications and then a fully coupled bidirectional model is developed. The unidirectional sensor model was validated against experimental results for a 1.58 mm diameter and 32.74 mm long Galfenol cantilever beam. The model was further used to investigate the response of Galfenol nanowire array that will be used in a nanowire acoustic sensor. Model predictions suggest that differences in the phase of bending motion of nanowires in an array will not produce a significant effect on the magnetic response of the array. It also predicts that the response of a single nanowire can be measured by a magnetic sensor with active measurement area much larger than the nanowire dimensions.

Paper Details

Date Published: 11 April 2007
PDF: 11 pages
Proc. SPIE 6528, Nanosensors, Microsensors, and Biosensors and Systems 2007, 652803 (11 April 2007); doi: 10.1117/12.715296
Show Author Affiliations
Chaitanya Mudivarthi, Univ. of Maryland, College Park (United States)
Patrick Downey, Univ. of Maryland, College Park (United States)
Alison B. Flatau, Univ. of Maryland, College Park (United States)

Published in SPIE Proceedings Vol. 6528:
Nanosensors, Microsensors, and Biosensors and Systems 2007
Vijay K. Varadan, Editor(s)

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