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Resettable sweat-powered wearable electrochromic biosensor.
Hartel, Martin C; Lee, Dongwook; Weiss, Paul S; Wang, Joseph; Kim, Jayoung.
Afiliación
  • Hartel MC; Department of Nanoengineering, University of California, San Diego, La Jolla, CA, 92093, USA; Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA.
  • Lee D; Department of Medical Engineering, College of Medicine, Yonsei University, Seoul, 03722, South Korea.
  • Weiss PS; Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA; Department of Chemistry & Biochemistry, Department of Materials Science & Engineering, and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA.
  • Wang J; Department of Nanoengineering, University of California, San Diego, La Jolla, CA, 92093, USA. Electronic address: josephwang@eng.ucsd.edu.
  • Kim J; Department of Medical Engineering, College of Medicine, Yonsei University, Seoul, 03722, South Korea. Electronic address: jayoungkim@yonsei.ac.kr.
Biosens Bioelectron ; 215: 114565, 2022 Nov 01.
Article en En | MEDLINE | ID: mdl-35926393
ABSTRACT
Wearable biofuel cells (BFCs) are being widely studied as self-powered sensors to monitor one's physiological status non-invasively. However, the energy generated by such devices is often insufficient to power accompanying measurement read-out systems and communication protocols. Here, we report a reversible fully printed electrochromic self-powered sensor (ESPS) toward on-body sweat lactate monitoring. The device was realized by integrating a lactate-oxidizable BFC anode, oxygen-reducible BFC cathode, and a reversible Prussian blue (PB) electrochromic display on a single wearable patch. Through modification of the BFC electrodes, the formal potential of the PB display (0.14 V) could be positioned in between the potentials of the lactate oxidation (-0.05 V) and oxygen reduction (0.35 V). Based on this system, the ESPS enables reversible and robust color changes with distinct time- and concentration-dependent profiles. The results demonstrate that the self-powered device has practical on-body applications for continual lactate monitoring with several advantages, including facile reversibility, ease of fabrication, and naked-eye colorimetric read-out.
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Texto completo: 1 Base de datos: MEDLINE Asunto principal: Técnicas Biosensibles / Dispositivos Electrónicos Vestibles Tipo de estudio: Guideline Idioma: En Revista: Biosens Bioelectron Asunto de la revista: BIOTECNOLOGIA Año: 2022 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
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Texto completo: 1 Base de datos: MEDLINE Asunto principal: Técnicas Biosensibles / Dispositivos Electrónicos Vestibles Tipo de estudio: Guideline Idioma: En Revista: Biosens Bioelectron Asunto de la revista: BIOTECNOLOGIA Año: 2022 Tipo del documento: Article País de afiliación: Estados Unidos