Journal
APL MATERIALS
Volume 3, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4900886
Keywords
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Funding
- U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES) [DE-SC001044]
- National Science Foundation CAREER Award [DMR 1150630]
- Japan Society for the Promotion of Science
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1150630] Funding Source: National Science Foundation
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Translating ionic currents into measureable electronic signals is essential for the integration of bioelectronic devices with biological systems. We demonstrate the use of a Pd/PdHx electrode as a bioprotonic transducer that connects H+ currents in solution into an electronic signal. This transducer exploits the reversible formation of PdHx in solution according to PdH <-> Pd + H+ + e(-), and the dependence of this formation on solution pH and applied potential. We integrate the protonic transducer with glucose dehydrogenase as an enzymatic AND gate for glucose and NAD(+). PdHx formation and associated electronic current monitors the output drop in pH, thus transducing a biological function into a measurable electronic output. C 2014 Author(s).
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