Mechanically Robust and Transparent Organohydrogel-Based E-Skin Nanoengineered from Natural Skin
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AbstractElectronic skins (e-skins), which are mechanically compliant with human skin, are regarded as ideal electronic devices for noninvasive human–machine interaction and wearable devices. In order to fully mimic human skin, e-skins should possess reliable mechanical properties and be able to resist external environmental factors like heat, cold, desiccation, and bacteria, while perceiving multiple external stimuli, such as temperature, humidity, and strain. Here, a transparent, mechanically robust, environmentally stable, versatile natural skin-derived organohydrogel (NSD-Gel) is nanoengineered through the integration of betaine, silver nanoparticles, and sodium chloride in a glycerol/water binary solvent. The transparent NSD-Gel e-skin exhibits outstanding tensile strength (7.33 MPa), puncture resistance, moisture retention, self-regeneration, and antibacterial properties. Additionally, the NSD-Gel e-skin possesses enhanced cold/heat resistance and stimuli-responsive characteristics that effectively sense environmental temperature and humidity changes, as well as physiological human body motion signals. In vitro and in vivo experiments show that the NSD-Gel e-skin confers desired biocompatibility and tissue protective properties even in extremely harsh environments (−196 °C to 100 °C). The NSD-Gel e-skin has great potential for applications in multidimensional wearable electronic devices, human-machine interfaces, and artificial intelligence, generating a versatile platform for the development of high-performance e-skins with on-demand properties.
All Author(s) ListBai Zhongxue, Wang Xuechuan, Zheng Manhui, Yue Ouyang, Huang Mengchen, Zou Xiaoliang, Cui Boqiang, Xie Long, Dong Shuyin, Shang Jiaojiao, Gong Guidong, Blocki AnnaM., Guo Junling, Liu Xinhua
Journal nameAdvanced Functional Materials
Year2023
Month4
Day11
Volume Number33
Issue Number15
PublisherWiley
Article number2212856
ISSN1616-301X
eISSN1616-3028
LanguagesEnglish-United States
KeywordsAntibacterial agents ; Artificial intelligence ; Bacteria ; Biocompatibility ; Chlorides ; Dichloropropane ; Drug resistance in microorganisms ; Electronic devices ; electronic skin ; Glycerol-Water ; Heat resistance ; Human motion ; Humidity ; Low temperature resistance ; Mechanical properties ; mechanically robust ; Moisture effects ; Moisture resistance ; multi-functions ; Nanoparticles ; natural skin ; organohydrogels ; Physiological aspects ; Robustness ; Silver ; Skin ; Skin care products ; Sodium chloride ; Stimuli ; Strain ; Tensile strength ; Thermal resistance ; Wearable technology

Last updated on 2024-21-08 at 00:50