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Motion Detection Using Tactile Sensors Based on Pressure-Sensitive Transistor Arrays

by Jiuk Jang 1,2,3,†, Yoon Sun Jun 1,2,3,†, Hunkyu Seo 1,2,3,†, Moohyun Kim 1,2,3,† and Jang-Ung Park 1,2,3,*
1
Nano Science Technology Institute, Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Korea
2
Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Korea
3
Graduate Program of Nano Biomedical Engineering (NanoBME), Advanced Science Institute, Yonsei University, Seoul 03722, Korea
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Sensors 2020, 20(13), 3624; https://doi.org/10.3390/s20133624
Received: 1 June 2020 / Revised: 20 June 2020 / Accepted: 23 June 2020 / Published: 28 June 2020
(This article belongs to the Special Issue Sensor Systems for Gesture Recognition)
In recent years, to develop more spontaneous and instant interfaces between a system and users, technology has evolved toward designing efficient and simple gesture recognition (GR) techniques. As a tool for acquiring human motion, a tactile sensor system, which converts the human touch signal into a single datum and executes a command by translating a bundle of data into a text language or triggering a preset sequence as a haptic motion, has been developed. The tactile sensor aims to collect comprehensive data on various motions, from the touch of a fingertip to large body movements. The sensor devices have different characteristics that are important for target applications. Furthermore, devices can be fabricated using various principles, and include piezoelectric, capacitive, piezoresistive, and field-effect transistor types, depending on the parameters to be achieved. Here, we introduce tactile sensors consisting of field-effect transistors (FETs). GR requires a process involving the acquisition of a large amount of data in an array rather than a single sensor, suggesting the importance of fabricating a tactile sensor as an array. In this case, an FET-type pressure sensor can exploit the advantages of active-matrix sensor arrays that allow high-array uniformity, high spatial contrast, and facile integration with electrical circuitry. We envision that tactile sensors based on FETs will be beneficial for GR as well as future applications, and these sensors will provide substantial opportunities for next-generation motion sensing systems. View Full-Text
Keywords: transistor; tactile sensor; pressure sensor; gesture recognition transistor; tactile sensor; pressure sensor; gesture recognition
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Jang, J.; Jun, Y.S.; Seo, H.; Kim, M.; Park, J.-U. Motion Detection Using Tactile Sensors Based on Pressure-Sensitive Transistor Arrays. Sensors 2020, 20, 3624.

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