Direct Laser Writing of the Porous Graphene Foam for Multiplexed Electrochemical Sweat Sensors
Wearable electrochemical sensors provide means to detect molecular-level information from the biochemical markers in biofluids for physiological health evaluation. However, a high-density array is often required for multiplexed detection of multiple markers in complex biofluids, which is challenging with low-cost fabrication methods. This work reports the low-cost direct laser writing of porous graphene foam as a flexible electrochemical sensor to detect biomarkers and electrolytes in sweat. The resulting electrochemical sensor exhibits high sensitivity and low limit of detection for various biomarkers (e.g., the sensitivity of 6.49/6.87/0.94/0.16 μA μM^-1cm^-2 and detection limit of 0.28/0.26/1.43/11.3 μM to uric acid/dopamine/tyrosine/ascorbic acid) in sweat. The results from this work open up opportunities for noninvasive continuous monitoring of gout, hydration status, and drug intake/overdose.
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Work Title | Direct Laser Writing of the Porous Graphene Foam for Multiplexed Electrochemical Sweat Sensors |
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License | In Copyright (Rights Reserved) |
Work Type | Article |
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Publication Date | July 11, 2023 |
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Deposited | January 29, 2024 |
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