Low-Power-Consumption Electronic Skins Based on Carbon Nanotube/Graphene Hybrid Films for Human-Machine Interactions and Wearable Devices

Due to their excellent electrical and mechanical properties,carbonnanotubes (CNTs) and graphene (G) have attracted increasing attentionfor the application of electronic skins (E-skins). In this paper,based on CNT/G hybrid films with a resistivity of 4.98 x 10(-4) & omega;& BULL;m, we prepared two kinds of E-skinswith low power consumption and successfully realized the perceptionof multiple signals, including stretching, bending, temperature, andpressure. With a G mass fraction of 20%, the stretch/flexion/temperature-sensitiveE-skin has an ultrahigh gauge factor (GF) of 1429 with a strain rangeof 0 to 10%, a GF of 0.92 rad(-1) with a bending anglerange of 0 to 90 & DEG;, and a GF of 1.1 x 10(-3) & DEG;C-1 with a temperature range of 25 to 85 & DEG;C; the pressure-sensitive E-skin has a GF of 7.45 kPa(-1) with a pressure range of 15 to 10,015 Pa. In addition, we appliedthe prepared E-skins in human-machine interactions and wearabledevices and confirmed their low power consumption below 74.20 nW inwearable applications.