Merkel cell-like artificial mechanoreceptor with high sensitivity and high resolution over a wide linear range

Yang，Jing1,2; Li，Zhibin1,2; Zhang，Xu1,2; Chen，Bin1,2; Feng，Jiansong1,2; Wang，Taihong1,2

2022-10-19

10.1016/j.xcrp.2022.101101

Cell Reports Physical Science   Impact Factor & Quartile

2666-3864

Mammalian mechanoreceptors endow the skin with the ability to perceive mechanical stimuli with precision. However, the fabrication of artificial mechanoreceptors with high sensitivity and resolution over a wide linear pressure range remains a key challenge. Herein, an artificial ion mechanoreceptor with the core-shell structured nanofibrous membrane as the sensitive layer is proposed by mimicking the biomechanical receptor. The membrane embeds ionic liquids and poly(vinylidene fluoride-co-hexafluoropropylene) hybrid nanofibers into a thermoplastic polyurethane matrix, enabling a reversible conversion between non-ionic and iontronic sensing modes induced by tactilely triggered ion movements. It exhibits a high sensitivity (32.70 kPa), a linear response (R ≈ 0.999) over a wide range of 0.04 Pa to 209 kPa, and an ultra-high resolution of 0.035% at 100 kPa (far exceeding the resolution of skin of ∼7%). The receptors are further used to monitoring physiological signals (even weak fingertip pulse signals) and assembled into an array to aid object recognition.

artificial mechanoreceptor core-shell nanofiber electronic skin ion-dipole interaction iontronic interface linearity physiological signal monitoring pressure sensor

English

First ; Corresponding

2-s2.0-85140082014

Scopus

1.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
2.School of Microelectronics,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Yang，Jing,Li，Zhibin,Zhang，Xu,et al. Merkel cell-like artificial mechanoreceptor with high sensitivity and high resolution over a wide linear range[J]. Cell Reports Physical Science,2022,3(10).

Yang，Jing,Li，Zhibin,Zhang，Xu,Chen，Bin,Feng，Jiansong,&Wang，Taihong.(2022).Merkel cell-like artificial mechanoreceptor with high sensitivity and high resolution over a wide linear range.Cell Reports Physical Science,3(10).

Yang，Jing,et al."Merkel cell-like artificial mechanoreceptor with high sensitivity and high resolution over a wide linear range".Cell Reports Physical Science 3.10(2022).