Asymmetric 'Janus' Biogel for Human-Machine Interfaces

Yuan Wei; Yingying He; Chunyu WangGang ChenBoxin Zhao

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Asymmetric 'Janus' Biogel for Human-Machine Interfaces

机译：Asymmetric 'Janus' Biogel for Human-Machine Interfaces

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Human-machine interfaces (HMIs) are essential for effective communicationbetween machines and tissues. However, mechanical and biologicalmismatches, along with weak adhesion between rigid electronic devices andsoft tissue, often cause unreliable responses and affect the signal recording ofHMIs. In this study, an asymmetrical “Janus” biogel patch with one side firmlyadhering to tissues, and the other surface having little adhesion and minimalinteractions with surrounding environments has been developed. A series ofanalytical, mechanical, and electrical tests are performed to investigate the“Janus” biogel patch as a functional and biocompatible HMI. It is found thatthe gallic acid-modified gelatin adhesive surface on one side exhibits bodytemperature-dependent tissue adhesion, enabling low modulus and seamlessskin contact. The other side is a tough gelatin/glycerol gel layer, which isthermally welded into the adhesive layer and functions as an encapsulant toprevent external interference due to adhesion. The encapsulation layer alsoexhibits a low friction coefficient when wet and proves to be a reliablealternative barrier to conventional encapsulation materials. The scientificinsights and engineering principles revealed in this type of “Janus” biogel willbe applicable to a broad range of biomedical applications, such as epidermaladhesive electrodes or skin-adhesive wearable devices.

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来源
《Advanced functional materials》 |2023年第34期|2214366.1-2214366.12|共12页
作者
Yuan Wei; Yingying He; Chunyu WangGang ChenBoxin Zhao;
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作者单位

Department of Chemical EngineeringWaterloo Institute for NanotechnologyInstitute for Polymer ResearchCentre for Bioengineering and BiotechnologyUniversity of WaterlooWaterloo, Ontario N2L 3G1, Canada, State Key Laboratory of Pulp and Paper EngineeringSouth China University of TechnologyGuangzhou 510640, China;

State Key Laboratory of Pulp and Paper EngineeringSouth China University of TechnologyGuangzhou 510640, China;

Department of Chemical EngineeringWaterloo Institute for NanotechnologyInstitute for Polymer ResearchCentre for Bioengineering and BiotechnologyUniversity of WaterlooWaterloo, Ontario N2L 3G1, Canada;

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正文语种英语
中图分类无线电电子学、电信技术;工程材料学;
关键词
human-machine interfaces; “Janus” biogel patches; body temperature response; conformal interface adhesions; tough surface encapsulation;

Asymmetric 'Janus' Biogel for Human-Machine Interfaces

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