Introduction to achievements
Electronic skin (E-skin) is widely used in bionic prosthetics, soft robots and wearable electronic devices. The waterproof breathable membrane that provides high levels of protection and comfort is a promising core material to meet the urgent needs of electronic skins. However, creating such a material that is waterproof, breathable and easy to manufacture has proven to be a huge challenge. In this article, researchers Bi Hengchang, Wu Xing, Southeast University Professor Sun Litao and other researchers published a paper titled "Waterproof and Breathable Graphene-Based Electronic Fabric for Wearable Sensors" in the journal "Adv. Mater. Techno" . The study proposed a waterproof and breathable Modal-based knitted fabric electronic skin by using a simple, low-cost three-step process, including graphene oxide (GO) loading, GO reduction, and polydimethylsiloxane loading. The E-skin prepared by
is insensitive to water, tea, milk, coffee and other common liquids in daily life, and has super waterproof ability. Breathability is also rated at approximately 13.6 mg cm-2 h -1. In addition, this E-skin can achieve reliable human movement monitoring. The authors believe that this electronic skin can provide a reliable principle for the further design and development of waterproof and breathable electronic skins.
Graphic introduction
Figure 1. Manufacturing process and characterization of waterproof and breathable graphene-based electronic fabrics.
Figure 2. Waterproof properties of graphene-based electronic fabrics.
Figure 3. Characterization of water vapor permeability of graphene-based electronic fabrics.
Figure 4. a) The relationship between relative resistance change and strain of graphene-based electronic fabric. b) Response time and recovery time of graphene sensor. c) Performance of graphene-based electronic fabrics under repeated stretch-release cycles at 10% strain. d) Performance of the proposed fabric under repeated stretch-release cycles at 20% strain, e) Performance of the graphene-based electronic fabric under repeated stretch-release cycles at 30% strain
Figure 5. Use of waterproof, breathable The graphene electronic fabric monitors human body movements, including movements of a) elbow, b) wrist, c) knee, d) ankle, e) fingers, f) biceps and g) forearm. Inset: Detailed monitoring locations of the fabric.
Summary
In summary, a waterproof and breathable fabric E-skin is proposed to solve the degradation of E-skin's sensing performance and the discomfort caused by human sweating. E-skin fabrics are made using a scalable and simple process. This proposed fabric electronic skin can provide a reliable principle for the further design and development of waterproof and breathable electronic skin.
Literature:
https://doi.org/10.1002/admt.202200149
