A location- and sharpness-specific tactile electronic skin based on staircase-like nanowire patches

Shu Gong; Yan Wang; Lim Wei Yap; Yunzhi Ling; Yunmeng Zhao; Dashen Dong; Qianqian Shi; Yiyi Liu; Hemayet Uddin; Wenlong Cheng

doi:10.1039/c8nh00125a

A location- and sharpness-specific tactile electronic skin based on staircase-like nanowire patches

Shu Gong, Yan Wang, Lim Wei Yap, Yunzhi Ling, Yunmeng Zhao, Dashen Dong, Qianqian Shi, Yiyi Liu, Hemayet Uddin, Wenlong Cheng^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

Human skin can sense an external object in a location-specific manner, simultaneously recognizing whether it is sharp or blunt. Such tactile capability can be achieved in both natural and stretched states. It is impractical to mimic this tactile function of human skin by designing pixelated sensor arrays across our whole curvilinear human body. Here, we report a new tactile electronic skin sensor based on staircase-like vertically aligned gold nanowires (V-AuNWs). With a back-to-back linear or spiral assembly of two staircase structures into a single sensor, we are able to recognize pressure in a highly location-specific manner for both non-stretched and stretched states (up to 50% strain); with a concentric design on the fingertip, we can identify the sharpness of an external object. We believe that our strategy opens up a new route to highly specific second-skin-like tactile sensors for electronic skin (E-skin) applications.

Original language	English
Pages (from-to)	640-647
Number of pages	8
Journal	Nanoscale Horizons
Volume	3
Issue number	6
DOIs	https://doi.org/10.1039/c8nh00125a
State	Published - Nov 2018
Externally published	Yes

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title = "A location- and sharpness-specific tactile electronic skin based on staircase-like nanowire patches",

abstract = "Human skin can sense an external object in a location-specific manner, simultaneously recognizing whether it is sharp or blunt. Such tactile capability can be achieved in both natural and stretched states. It is impractical to mimic this tactile function of human skin by designing pixelated sensor arrays across our whole curvilinear human body. Here, we report a new tactile electronic skin sensor based on staircase-like vertically aligned gold nanowires (V-AuNWs). With a back-to-back linear or spiral assembly of two staircase structures into a single sensor, we are able to recognize pressure in a highly location-specific manner for both non-stretched and stretched states (up to 50% strain); with a concentric design on the fingertip, we can identify the sharpness of an external object. We believe that our strategy opens up a new route to highly specific second-skin-like tactile sensors for electronic skin (E-skin) applications.",

author = "Shu Gong and Yan Wang and Yap, {Lim Wei} and Yunzhi Ling and Yunmeng Zhao and Dashen Dong and Qianqian Shi and Yiyi Liu and Hemayet Uddin and Wenlong Cheng",

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AU - Gong, Shu

AU - Wang, Yan

AU - Yap, Lim Wei

AU - Ling, Yunzhi

AU - Zhao, Yunmeng

AU - Dong, Dashen

AU - Shi, Qianqian

AU - Liu, Yiyi

AU - Uddin, Hemayet

AU - Cheng, Wenlong

PY - 2018/11

Y1 - 2018/11

N2 - Human skin can sense an external object in a location-specific manner, simultaneously recognizing whether it is sharp or blunt. Such tactile capability can be achieved in both natural and stretched states. It is impractical to mimic this tactile function of human skin by designing pixelated sensor arrays across our whole curvilinear human body. Here, we report a new tactile electronic skin sensor based on staircase-like vertically aligned gold nanowires (V-AuNWs). With a back-to-back linear or spiral assembly of two staircase structures into a single sensor, we are able to recognize pressure in a highly location-specific manner for both non-stretched and stretched states (up to 50% strain); with a concentric design on the fingertip, we can identify the sharpness of an external object. We believe that our strategy opens up a new route to highly specific second-skin-like tactile sensors for electronic skin (E-skin) applications.

AB - Human skin can sense an external object in a location-specific manner, simultaneously recognizing whether it is sharp or blunt. Such tactile capability can be achieved in both natural and stretched states. It is impractical to mimic this tactile function of human skin by designing pixelated sensor arrays across our whole curvilinear human body. Here, we report a new tactile electronic skin sensor based on staircase-like vertically aligned gold nanowires (V-AuNWs). With a back-to-back linear or spiral assembly of two staircase structures into a single sensor, we are able to recognize pressure in a highly location-specific manner for both non-stretched and stretched states (up to 50% strain); with a concentric design on the fingertip, we can identify the sharpness of an external object. We believe that our strategy opens up a new route to highly specific second-skin-like tactile sensors for electronic skin (E-skin) applications.

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A location- and sharpness-specific tactile electronic skin based on staircase-like nanowire patches

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