A hematite-based photoelectrochemical platform for visible light-induced biosensing
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Updated: Dec 24, 2025

A Rapid and Chemical-free Hemoglobin Assay with Photothermal Angular Light Scattering
Published on: December 7, 2016
Gyeong Min Ryu1, Minah Lee, Da Som Choi
1Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Yuseong-gu, Daejeon 305-701, Republic of Korea. parkcb@kaist.ac.kr.
Abstract:
We report the first hematite-based photoelectrochemical (PEC) biosensor platform to detect NADH under visible-light irradiation. To enhance the electrical signal of photoanodes, we employed mussel-inspired polydopamine which immobilizes redox mediators on hematite. The enzymatic PEC biosensor enabled the detection of glucose, ethanol, and lactate, and even showed successful detection of glucose in human plasma, suggesting the practical usefulness of our platform.
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