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Stretchable Magnetoelectronics

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posted on 08.06.2011, 00:00 authored by Michael Melzer, Denys Makarov, Alfredo Calvimontes, Daniil Karnaushenko, Stefan Baunack, Rainer Kaltofen, Yongfeng Mei, Oliver G. Schmidt
We fabricated [Co/Cu] multilayers revealing a giant magnetoresistance (GMR) effect on free-standing elastic poly(dimethylsiloxane) (PDMS) membranes. The GMR performance of [Co/Cu] multilayers on rigid silicon and on free-standing PDMS is similar and does not change with tensile deformations up to 4.5%. Mechanical deformations imposed on the sensor are totally reversible, due to the elasticity of the PDMS membranes. This remarkable performance upon stretching relies on a wrinkling of GMR layers on top of the PDMS membrane.