액체금속을 활용한 신축성 전자소재 개발 동향

• 영문명: Study for the Liquid Metals Enabled Stretchable Electronics
• 발행기관: 강원대학교 산업기술연구소
• 저자명: 이주형(Joo Hyung Lee) 이윤수(Yoon Su Lee) 유진(Jin Yoo) 원서연(Seoyeon Won) 임태환(Taehwan Lim)
• 간행물 정보: 『산업기술연구』vol.43, 25~31쪽, 전체 7쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2023.12.31

영문 초록

Stretchable and flexible electronics that comply with dynamic movements and micromotion of the human tissues can enable real-time monitoring of physiologic signals onto the human skin and in the brain, respectively. Especially, gallium based liquid metal stretchable electronics can offer human-interactive biosensors to monitor various physiologic parameters. However, the liquid-like nature, surface oxidation and contamination by organic materials, and low biostability of the liquid metals have still limited the long-term use as bioelectronics. Here we introduced electrochemical deposition without oxidation pathways to overcome these practical challenges in liquid metal bioelectronics. CNT/PDDA composite with reduction way and PEDOT:BF4 with oxidation way under organic solvent are suggested as rationally designed material engineering approaches. We confirmed that the structures with the soft, flexible, and stretchable liquid metal platform can successfully detect dopamine with a high sensitivity and selectivity, record neural signals including action potentials without scar formation, and monitor physiologic signals such as EMG and ECG.

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키워드

Stretchable electronics Liquid metals Gallium Electrochemical Biomedical Sensors