Study on the flexible piezoresistive tactile sensor for artificial sensory system = 인공 감각 형성을 위한 유연 압저항 촉각 센서 연구

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Recently, tactile sensor researches for measuring pressure and strain, which are tactile sensations felt by humans, are being actively conducted. The tactile sensor can be used in various fields such as healthcare devices, touch screen, robotics. Conventional tactile sensor research has been conducted to enhance the sensitivity, sensing range, and reaction time of the sensor. However, in order to commercialize the tactile sensor, there are some challenges to be solved. Current tactile sensors have low uniformity and high hysteresis and they lower reliability of the sensor signal. In addition, previous reported tactile sensors are sensitive to various physical stimuli. In this case, it is not possible to accurately determine the external stimulus, because it is not possible to detect which stimulus induced the sensor signal. Therefore, the tactile sensor that is sensitive to only one stimulus is required. In this study, a piezoresistive pressure sensor with high uniformity (sensitivity error range of 0.87 %) and low hysteresis (2.0 %) was fabricated using microfluidic system and chemical bonding of conductive materials. In addition, pressure insensitive strain sensor was fabricated using porous structure. Sensors fabricated in this study have suggested ways to solve problems that have not been solved in the field of tactile sensors, and they are expected to be used in various fields in the future.
Advisors
Park, Steveresearcher스티브 박researcher
Description
한국과학기술원 :신소재공학과,
Publisher
한국과학기술원
Issue Date
2019
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 신소재공학과, 2019.2,[iv, 29 p. :]

Keywords

Piezoresistive tactile sensor▼ahysteresis▼auniformity▼apressure sensor▼astrain sensor▼apressure insensitive strain sensor; 압저항 촉각센서▼a이력 현상▼a균일성▼a압력 센서▼a인장력 센서▼a압력에 둔감한 인장력 센서

URI
http://hdl.handle.net/10203/266466
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=843306&flag=dissertation
Appears in Collection
MS-Theses_Master(석사논문)
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