Abstract
Smaller electrical resistance strain gauges (ERSG) are highly expected especially for micro-electro-mechanical systems while the reduction in the size of strain gauge is restricted by the relatively low resistivity and poor processability of conventional piezoresistive alloys. We investigate piezoresistive properties of a Pd40Cu30Ni10P20 metallic glassy fiber (MGF), and find that the resistivity, gage factor, elastic limit, and relative change in resistance of the MGF are superior to that of commercial crystalline ERSG piezoresistors. Combining with high flexibility, uniformity, smoothness, and nanoscale size in diameter, the MGFs are promising for submicroscale ERSGs.
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