Fig. 3: Electrical response of AST fiber to temperature stimulation.

a Schematic of AST fiber resistance temperature variation testing platform. b Resistance-temperature curves for an AST fiber. c Comparison of absolute value of the temperature coefficient of resistance |TCR| of recently reported temperature sensors in the human body temperature range of 303–313 K. d Stable resistive response at different dynamic temperature gradients. e Relative resistance variation of the AST fiber for loading and unloading actions by the touch of a finger. f Response-recovery time after finger touch. g Relative resistance variation of the AST fiber, resulting in a minimum discernible temperature difference of 0.2 K. h Relative resistance variation of the AST fiber under 100 cycles of finger-touch stimulation