10.2　Design Principles of E-Skin Devices

The e-skin device is a simulation of the real skin of the human body.It must not only have mechanical properties similar to skin，but also have the functions of skin.Therefore，the e-skin device must meet three requirements：①It has mechanical properties similar to real skin，such as low modulus，high stretchability，and high flexibility；②It can realize the functions of real skin，such as sensing of pressure，strain，shear and temperature；③It can integrate functions that real skin does not have，such as the sensing of physiological electric signals and chemical substances，to realize the monitoring of human health.To meet the above requirements，it is necessary to comprehensively consider materials and device structures for different functions and uses.(https://www.daowen.com)