Highly Sensitive Pressure Sensor Based on Bioinspired Porous Structure for Real-Time Tactile Sensing

Subin Kang; Jaehong Lee; Sanggeun Lee; Seul Gee Kim; Jae Kang Kim; Hassan Algadi; Saleh Al-Sayari; Dae Eun Kim; Dae Eun Kim; Taeyoon Lee

doi:10.1002/aelm.201600356

Highly Sensitive Pressure Sensor Based on Bioinspired Porous Structure for Real-Time Tactile Sensing

Subin Kang, Jaehong Lee, Sanggeun Lee, Seul Gee Kim, Jae Kang Kim, Hassan Algadi, Saleh Al-Sayari, Dae Eun Kim, Dae Eun Kim, Taeyoon Lee

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

234 Citations (Scopus)

Abstract

A flexible pressure sensor with high performances is one of the promising candidates for achieving electronic skins (E-skin) related to various applications such as wearable devices, health monitoring systems, and artificial robot arms. The sensitive response for external mechanical stimulation is fundamentally required to develop the E-skin which imitates the function of human skin. The performance of capacitive pressure sensors can be improved using morphologies and structures occurring in nature. In this work, highly sensitive capacitive pressure sensors based on a porous structure of polydimethylsiloxane (PDMS) thin film, inspired on the natural multilayered porous structures seen in mushrooms, diatoms, and spongia offilinalis, have been developed and evaluated. A bioinspired porous dielectric layer is used, resulting in high-performance pressure sensors with high sensitivity (0.63 kPa⁻¹), high stability over 10 000 cycles, fast response and relaxation times, and extremely low-pressure detection of 2.42 Pa. Additionally, the resulting pressure sensors are demonstrated to fabricate multipixel arrays, thus achieving successful real-time tactile sensing of various touch shapes. The developed high-performance flexible pressure sensors may open new opportunities for innovative applications in advanced human-machine interface systems, robotic sensory systems, and various wearable health monitoring devices.

Original language	English
Article number	1600356
Journal	Advanced Electronic Materials
Volume	2
Issue number	12
DOIs	https://doi.org/10.1002/aelm.201600356
Publication status	Published - 2016 Dec 1

Bibliographical note

Funding Information:
S.K. and J.L. contributed equally to this work. This work was supported by the Priority Research Centers Program (Grant No. 2009–0093823) and (No. 2014R1A2A1A11053839) through the National Research Foundation (NRF) of Korea funded by the Ministry of Education, Science and Technology (MEST) and the R&D program of MOTIE/KEIT [10064081, Development of fiber-based flexible multimodal pressure sensor and algorithm for gesture/posture-recognizable wearable devices]. The authors would like to acknowledge the support of the Ministry of Higher Education, Kingdom of Saudi Arabia for supporting this research through a grant (PCSED-009–14) under the Promising Centre for Sensors and Electronic Devices (PCSED) at Najran University, Kingdom of Saudi Arabia. Also, this work was supported by the Yonsei University Future-leading Research Initiative, Implantable artificial electronic skin for an ubiquitous healthcare system of 2016-12-0050 and Mid-career Researcher Program through NRF grant funded by the MEST (2014R1A2A2A09053061).

Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/aelm.201600356

Cite this

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title = "Highly Sensitive Pressure Sensor Based on Bioinspired Porous Structure for Real-Time Tactile Sensing",

abstract = "A flexible pressure sensor with high performances is one of the promising candidates for achieving electronic skins (E-skin) related to various applications such as wearable devices, health monitoring systems, and artificial robot arms. The sensitive response for external mechanical stimulation is fundamentally required to develop the E-skin which imitates the function of human skin. The performance of capacitive pressure sensors can be improved using morphologies and structures occurring in nature. In this work, highly sensitive capacitive pressure sensors based on a porous structure of polydimethylsiloxane (PDMS) thin film, inspired on the natural multilayered porous structures seen in mushrooms, diatoms, and spongia offilinalis, have been developed and evaluated. A bioinspired porous dielectric layer is used, resulting in high-performance pressure sensors with high sensitivity (0.63 kPa−1), high stability over 10 000 cycles, fast response and relaxation times, and extremely low-pressure detection of 2.42 Pa. Additionally, the resulting pressure sensors are demonstrated to fabricate multipixel arrays, thus achieving successful real-time tactile sensing of various touch shapes. The developed high-performance flexible pressure sensors may open new opportunities for innovative applications in advanced human-machine interface systems, robotic sensory systems, and various wearable health monitoring devices.",

author = "Subin Kang and Jaehong Lee and Sanggeun Lee and Kim, {Seul Gee} and Kim, {Jae Kang} and Hassan Algadi and Saleh Al-Sayari and Kim, {Dae Eun} and Kim, {Dae Eun} and Taeyoon Lee",

note = "Funding Information: S.K. and J.L. contributed equally to this work. This work was supported by the Priority Research Centers Program (Grant No. 2009–0093823) and (No. 2014R1A2A1A11053839) through the National Research Foundation (NRF) of Korea funded by the Ministry of Education, Science and Technology (MEST) and the R&D program of MOTIE/KEIT [10064081, Development of fiber-based flexible multimodal pressure sensor and algorithm for gesture/posture-recognizable wearable devices]. The authors would like to acknowledge the support of the Ministry of Higher Education, Kingdom of Saudi Arabia for supporting this research through a grant (PCSED-009–14) under the Promising Centre for Sensors and Electronic Devices (PCSED) at Najran University, Kingdom of Saudi Arabia. Also, this work was supported by the Yonsei University Future-leading Research Initiative, Implantable artificial electronic skin for an ubiquitous healthcare system of 2016-12-0050 and Mid-career Researcher Program through NRF grant funded by the MEST (2014R1A2A2A09053061). Publisher Copyright: {\textcopyright} 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

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AU - Algadi, Hassan

AU - Al-Sayari, Saleh

AU - Kim, Dae Eun

AU - Lee, Taeyoon

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Highly Sensitive Pressure Sensor Based on Bioinspired Porous Structure for Real-Time Tactile Sensing

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

UN SDGs

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