Fig. 3: The SEM images of the surface of In2O3 and In2O3-0.08gMWCNTs thin films.
From: High-stability flexible thin-film temperature sensor using MWCNTs-toughened Peano structure

a1–b1 The surface of the thin films obtained after curing at 120 °C. a2–a3, b2–b3 The surface of the thin films obtained after heat treatment at 360 °C. a4–a5, b4–b5 The cross sections of thin films obtained after heat treatment at 360 °C. c Schematic diagram of the stretching process of the micro-tensile machine observed by SEM. d–d3 Detailed view of the stretching process of In2O3 thin film. e–e3 Detailed view of the stretching process of In2O3-0.08gMWCNTs thin film