A Highly Sensitive Tactile Sensor Using a Pyramid-Plug Structure for Detecting Pressure, Shear Force, and Torsion

Daehwan Choi, Sukjin Jang, Joo Sung Kim, Hyung Jun Kim, Do Hwan Kim, Jang Yeon Kwon

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Sensors that detect and discriminate external mechanical forces are a principal component in the development of electronic tactile systems that can mimic the multifunctional properties of human skin. This study demonstrates a pyramid-plug structure for highly sensitive tactile sensors that enables them to detect pressure, shear force, and torsion. The device is composed of pyramid-patterned ionic gel inspired by neural mechanoreceptors and engraved electrodes. Based on a pyramid-plug structure, the deformation mechanism differs between different types of external mechanical loadings. The sensor provides the high sensitivities of 1.93 kPa −1 , 29.88 N −1 , and 3.39 (N cm) −1 , and a wide range of detection for tactile daily activity. Moreover, this tactile sensor could work through either of the two transduction methods (capacitive transduction and piezoresistive transduction). It is shown that this tactile sensor can be used to monitor changes in electrical signals ranging from those caused by human breathing to those caused by arbitrary multiplex human touching.

Original languageEnglish
Article number1800284
JournalAdvanced Materials Technologies
Volume4
Issue number3
DOIs
StatePublished - 2019 Mar 1

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Torsional stress
Sensors
Skin
Gels
Electrodes

Keywords

  • deformable ionic gel
  • electronic skin
  • mechanotransducer
  • microstructured
  • tactile sensor

Cite this

Choi, Daehwan ; Jang, Sukjin ; Kim, Joo Sung ; Kim, Hyung Jun ; Kim, Do Hwan ; Kwon, Jang Yeon. / A Highly Sensitive Tactile Sensor Using a Pyramid-Plug Structure for Detecting Pressure, Shear Force, and Torsion. In: Advanced Materials Technologies. 2019 ; Vol. 4, No. 3.
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A Highly Sensitive Tactile Sensor Using a Pyramid-Plug Structure for Detecting Pressure, Shear Force, and Torsion. / Choi, Daehwan; Jang, Sukjin; Kim, Joo Sung; Kim, Hyung Jun; Kim, Do Hwan; Kwon, Jang Yeon.

In: Advanced Materials Technologies, Vol. 4, No. 3, 1800284, 01.03.2019.

Research output: Contribution to journalArticleResearchpeer-review

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