Fig. 1: Giant gauge factor (GF) of SnS2 based strain sensors.
From: Giant gauge factor of Van der Waals material based strain sensors

a Schematic of the Van der Waals strain sensor devices. b I–V curves under various strain conditions measured in darkness. c The variation of \(\Delta R/R_0\) as a function of strain for the sensor measured in darkness. d I–V curves under various strain conditions measured with 365 nm light illumination. e The function of \(\Delta R/R_0\) versus strain of the sensor measured under 365 nm illumination. f GF value of the strain sensor as a function of the power density of 365 nm illumination.