Development of highly conductive, intrinsically biocompatible, and 3D printable electrode based on PEDOT:PSS for bioelectronics생체 전자소자 활용을 위한 PEDOT:PSS 기반 고전도성 전극 개발

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poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is widely studied in bioelectronics because it has intrinsic conductivity and biocompatibility. However, bare PEDOT:PSS has a property of poor electrical conductivity and water stability due to non-conducting and hydrophilic PSS-group, research has been conducted to perform secondary doping by adding organic solvent or ionic liquid to improve stability in wet environment and electrical conductivity. However, because these additives are toxic, a detoxification process is required for more than 24 hours after the electrode is manufactured. In this work, We developed high-conductive, ready-to-use, 3D printable PEDOT:PSS ink. Electrode made with this ink has an electrical conductivity of ~286 S/cm and is easily hydrogelized in wet environment. For the demonstration of this material, we manufactured EMG sensor and ECG sensor that measure human nerve signals and an electric device that stimulates the mouse's sciatic nerve. EMG and ECG sensor showed a high signal-to-noise ratio(16.80dB), and stimulation device succeeded in stimulating the mouse's sciatic nerve with a low voltage of 60 mV.
Advisors
Park, Steveresearcher스티브 박researcher
Description
한국과학기술원 :신소재공학과,
Publisher
한국과학기술원
Issue Date
2023
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 신소재공학과, 2023.2,[v, 44 p. :]

Keywords

PEDOT:PSS▼aBioelectronics▼a3D printing▼aIn-vivo stimulation device▼aBio-signal recording device; PEDOT:PSS▼a생체전자소자▼a3D 프린팅▼a생체 내 자극장치▼a생체 신호 기록 장치

URI
http://hdl.handle.net/10203/308972
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1033094&flag=dissertation
Appears in Collection
MS-Theses_Master(석사논문)
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