Abstract
A novel flexible lactate sensor based on organic field-effect transistors (OFETs) is demonstrated. Because lactate is known as a biomarker for assessing our physical performance, wearable lactate sensors could contribute to the monitoring of human health conditions. The flexible and low-voltage operatable OFET possesses an extended-gate modified with enzymes and an osmium-redox polymer for the lactate detection, meaning that the continuous measurement of lactate levels (0 - 10 mM) has been successfully achieved. We believe that insight obtained will open up opportunities for applying OFETs in wearable biosensors.
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