A highly conductive self-assembled multilayer graphene nanosheet film for electronic tattoos in the applications of human electrophysiology and strain sensing.

Nanoscale
Quan-Liang ZhaoZhi-Ling Hou

Abstract

Highly conductive, conformable and gel-free electrodes are desirable in human electrophysiology. Besides, intimately coupling with human skin, wearable strain sensors can detect numerous physiological signals, such as wrist pulse and breath. In this study, a multilayer graphene nanosheet film (MGNF) with high conductivity was prepared by the Marangoni self-assembly for using in tattoo dry electrodes (TDEs) and in a graphene tattoo strain sensor (GTSS). Compared to commercial Ag/AgCl gel electrodes, TDEs have lower skin-electrode contact impedance and could detect human electrocardiogram for 24-hour wearing more accurately as well as electromyogram. Through designing a slim serpentine ribbon structure, a resistance-type GTSS, without deterioration even after 2000 cycles, is well demonstrated for human wrist pulse and breath sensing. With the advantages of high conductivity and conformability, MGNF provides support to fabricate low-cost, customizable, and high-performance electronic tattoos for human electrophysiology and strain sensing.

References

Mar 29, 2011·Nature Nanotechnology·Takeo YamadaKenji Hata
Sep 12, 2013·Nature Communications·Eden StevenJames S Brooks
Aug 15, 2014·ACS Applied Materials & Interfaces·Zhi-Ling HouYa-Ping Sun
Jul 19, 2017·ACS Nano·Shideh Kabiri AmeriNanshu Lu
Dec 2, 2017·Advanced Healthcare Materials·Shanshan YaoYong Zhu
Mar 30, 2018·Advanced Science·Laura M FerrariFrancesco Greco
Jul 25, 2018·ACS Nano·Yancong QiaoTian-Ling Ren
Oct 10, 2018·Advanced Materials·Chunya WangYingying Zhang
Oct 20, 2018·ACS Applied Materials & Interfaces·Pedro Alhais LopesMahmoud Tavakoli
Jul 19, 2019·Nanoscale·Nicholas X WilliamsAaron D Franklin

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