GaSb whiskers in sensor electronics

Abstract

Piezoresistive properties of gallium antimonide whiskers grown from the vapour phase by chemical transport reaction were studied in the temperature range of -150÷+100°C. The possibility to create different piezoresistive mechanical sensors based on these microcrystals was shown. On the basis of n- and p-type GaSb whiskers the strain gauges were created with high sensitivity operating in the wide temperature range. Sensors of hydrostatic pressure up to 5000 bar based on the n-type GaSb whiskers with high sensitivity were developed, that allows to obtain the output signal to 700 mV (without amplification) at this pressure.