A breathable, biodegradable, antibacterial, and self-powered electronic skin based on all-nanofiber triboelectric nanogenerators

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Abstract

A breathable, biodegradable, antibacterial, and self-powered skin is developed.

Abstract

Mimicking the comprehensive functions of human sensing via electronic skins (e-skins) is highly interesting for the development of human-machine interactions and artificial intelligences. Some e-skins with high sensitivity and stability were developed; however, little attention is paid to their comfortability, environmental friendliness, and antibacterial activity. Here, we report a breathable, biodegradable, and antibacterial e-skin based on all-nanofiber triboelectric nanogenerators, which is fabricated by sandwiching silver nanowire (Ag NW) between polylactic-co-glycolic acid (PLGA) and polyvinyl alcohol (PVA). With micro-to-nano hierarchical porous structure, the e-skin has high specific surface area for contact electrification and numerous capillary channels for thermal-moisture transfer. Through adjusting the concentration of Ag NW and the selection of PVA and PLGA, the antibacterial and biodegradable capability of e-skins can be tuned, respectively. Our e-skin can achieve real-time and self-powered monitoring of whole-body physiological signal and joint movement. This work provides a previously unexplored strategy for multifunctional e-skins with excellent practicability.

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Flexible and Stretchable Physical Sensor Integrated Platforms for Wearable Human-Activity Monitoringand Personal Healthcare.

Tran Quang Trung, Nae-Eung Lee (2016)

Flexible and stretchable physical sensors that can measure and quantify electrical signals generated by human activities are attracting a great deal of attention as they have unique characteristics, such as ultrathinness, low modulus, light weight, high flexibility, and stretchability. These flexible and stretchable physical sensors conformally attached on the surface of organs or skin can provide a new opportunity for human-activity monitoring and personal healthcare. Consequently, in recent years there has been considerable research effort devoted to the development of flexible and stretchable physical sensors to fulfill the requirements of future technology, and much progress has been achieved. Here, the most recent developments of flexible and stretchable physical sensors are described, including temperature, pressure, and strain sensors, and flexible and stretchable sensor-integrated platforms. The latest successful examples of flexible and stretchable physical sensors for the detection of temperature, pressure, and strain, as well as their novel structures, technological innovations, and challenges, are reviewed first. In the next section, recent progress regarding sensor-integrated wearable platforms is overviewed in detail. Some of the latest achievements regarding self-powered sensor-integrated wearable platform technologies are also reviewed. Further research direction and challenges are also proposed to develop a fully sensor-integrated wearable platform for monitoring human activity and personal healthcare in the near future.

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Quantifying the triboelectric series

Haiyang Zou, Ying. Zhang, Litong Guo … (2019)

Triboelectrification is a well-known phenomenon that commonly occurs in nature and in our lives at any time and any place. Although each and every material exhibits triboelectrification, its quantification has not been standardized. A triboelectric series has been qualitatively ranked with regards to triboelectric polarization. Here, we introduce a universal standard method to quantify the triboelectric series for a wide range of polymers, establishing quantitative triboelectrification as a fundamental materials property. By measuring the tested materials with a liquid metal in an environment under well-defined conditions, the proposed method standardizes the experimental set up for uniformly quantifying the surface triboelectrification of general materials. The normalized triboelectric charge density is derived to reveal the intrinsic character of polymers for gaining or losing electrons. This quantitative triboelectric series may serve as a textbook standard for implementing the application of triboelectrification for energy harvesting and self-powered sensing.

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Silk-molded flexible, ultrasensitive, and highly stable electronic skin for monitoring human physiological signals.

Xuewen Wang, Yang Gu, Zuoping Xiong … (2014)

Flexible and transparent E-skin devices are achieved by combining silk-molded micro-patterned polydimethylsiloxane (PDMS) with single-walled carbon nanotube (SWNT) ultrathin films. The E-skin sensing device demonstrates superior sensitivity, a very low detectable pressure limit, a fast response time, and a high stability for the detection of superslight pressures, which may broaden their potential use as cost-effective wearable electronics for healthcare applications. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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Author and article information

Journal

Journal ID (nlm-ta): Sci Adv

Journal ID (iso-abbrev): Sci Adv

Journal ID (publisher-id): SciAdv

Journal ID (hwp): advances

Title: Science Advances

Publisher: American Association for the Advancement of Science

ISSN (Electronic): 2375-2548

Publication date Collection: June 2020

Publication date (Electronic): 26 June 2020

Volume: 6

Issue: 26

Electronic Location Identifier: eaba9624

Affiliations

[1 ]Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, P. R. China.

[2 ]College of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China.

[3 ]Research Center for Eco-environmental Science, Chinese Academy of Sciences, Beijing, 100085, P. R. China.

[4 ]College of Light Industry and Textile, Inner Mongolia University of Technology, Hohhot, 010051, P. R. China.

[5 ]School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.

Author notes

[*]

These authors contributed equally to this work.

[† ]Corresponding author. Email: wangjie@ 123456binn.cas.cn (J.W.); zhong.wang@ 123456mse.gatech.edu (Z.L.W.)

Author information

Xiao Peng http://orcid.org/0000-0001-8191-6587

Kai Dong http://orcid.org/0000-0001-6314-1546

Di Liu http://orcid.org/0000-0003-0927-1416

Jie Wang http://orcid.org/0000-0003-4470-6171

Zhong Lin Wang http://orcid.org/0000-0002-5530-0380

Article

Publisher ID: aba9624

DOI: 10.1126/sciadv.aba9624

PMC ID: 7319766

PubMed ID: 32637619

SO-VID: f77cb52a-9586-49e7-b98c-8a042760f343

Copyright © Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

History

Date received : 19 January 2020

Date accepted : 15 May 2020

Funding

Funded by: Minister of Science and Technology;

Award ID: 2016YFA0202704

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Copyeditor Sef Rio

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A breathable, biodegradable, antibacterial, and self-powered electronic skin based on all-nanofiber triboelectric nanogenerators

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Most cited references 37

Flexible and Stretchable Physical Sensor Integrated Platforms for Wearable Human-Activity Monitoringand Personal Healthcare.

Quantifying the triboelectric series

Silk-molded flexible, ultrasensitive, and highly stable electronic skin for monitoring human physiological signals.

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