Skin-like hydrogel devices for wearable sensing, soft ...
www.ncbi.nlm.nih.gov › pmc › articlesNov 19, 2021 · Skin-like hydrogel devices (A) Schematic of the human skin that resists physical deformation due to the elastin fiber and collagen in the dermis layer, maintains the body temperature due to the fat cells in the hypodermis layer, holds water due to the hygroscopic substance (i.e., pyrrolidone carboxylic acid), and transports ionic signal directionally within sensory neurons.