10.2.1　Materials

E-skin has similar mechanical properties to real skin.Therefore，materials for preparing e-skin should have excellent flexibility，stretchability，biocompatibility，and self-healing ability，to ensure its biological safety and service life.Material selection and preparation strategies play a key role in simulating the mechanical properties of real skin.In addition，in order to realize the sensing function of the e-skin，it is necessary to use materials with excellent electrical properties（including conductive and dielectric properties）.This section will briefly introduce the selection of substrate materials，dielectric materials，and conductive materials for e-skin.(https://www.daowen.com)