Development of intelligent haptic perception device with integrated tactile sensor and artificial synapse = 촉각 센서 및 인공 시냅스를 통합한 구조의 지능형 촉각 인지 소자 개발

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Electronic skin helps to adapt and interact with the environment through tactile stimulus. However, a conventional computing system can be inappropriate for processing signals generated from electronic skin, because the signals are enormous and change from time to time. Thus, attempts to overcome the problem have been continuing through a neuromorphic approach. Here, we report an intelligent haptic perception device (IHPD) that combines an organic electrochemical transistor (OECT)-based synaptic device and a pressure sensor. The pyramid-patterned ion gel, which performs both the dielectric layer of the synaptic transistor and the pressure sensor, simplifies the structure of the device. In addition, the pyramid structure makes it possible to stepwise dope a channel of the synaptic device by pressure. Finally, the IHPD is capable of processing and learning through a selective and reversible transition of short-term plasticity (STP) and long-term plasticity (LTP). This allows the IHPD itself to derive various information such as amplitude, frequency, duration, and the total amount of pressure, and to perform error-tolerant perception and learning through tactile stimuli. This new type of tactile sensor might be a new possibility to solve the existing problem of electronic skin.
Advisors
Park, Steveresearcher스티브 박researcher
Description
한국과학기술원 :신소재공학과,
Publisher
한국과학기술원
Issue Date
2020
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 신소재공학과, 2020.2,[x, 37 p. :]

Keywords

Tactile sensor▼aSynaptic device▼aOrganic electrochemical transistor▼aNeuromorphic▼aIntelligent haptic perception; 촉각 센서▼a시냅스 소자▼a유기 전기화학 트랜지스터▼a뉴로모픽▼a지능형 촉각 지각

URI
http://hdl.handle.net/10203/283775
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=901477&flag=dissertation
Appears in Collection
MS-Theses_Master(석사논문)
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