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A Self-Healable Bifunctional Electronic Skin

2020-06-19

 

Author(s): Gao, ZY (Gao, Zhiyi); Lou, Z (Lou, Zheng); Han, W (Han, Wei); Shen, GZ (Shen, Guozhen)

Source: ACS APPLIED MATERIALS & INTERFACES Volume: 12 Issue: 21 Pages: 24339-24347 DOI: 10.1021/acsami.0c05119 Published: MAY 27 2020

Abstract: For the mimicry of human skin, one of the challenges is how to detect and recognize different stimulus by electronic device, while still has the ability of skin self-recovery at the same time. Because of the excellent elasticity and flexibility, strong self-healing ability, in this paper, we reported a bifunctional self-healing e-skin with polyurethane (PU) and polyurethane@multiwalled carbon nanotubes (PU@CNT) as the sensing materials by integrating a resistance temperature sensor on top of a capacitive pressure sensor on the same flexible cellulose nanocrystals@ carboxylated nitrile rubber@polyethylenimine (CNC@XNBR) substrate. Studies found that each type of sensor exhibited fast and superior response to only the target stimuli. Meanwhile, due to the self-recovery properties of PU and CNC@XNBR, as-fabricated e-skin has the self-healing ability after damage and remains excellent sensitivity to temperature and pressure after healing. A 5 x 5 device array was also fabricated, which can simultaneously image the pressure and temperature distribution.

Accession Number: WOS:000537731900072

PubMed ID: 32369336

ISSN: 1944-8244

eISSN: 1944-8252

Full Text: https://pubs.acs.org/doi/10.1021/acsami.0c05119



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