레이저 유도 그래핀 기반의 고성능 웨어러블 포도당 패치센서
Laser-induced Graphene Based Wearable Glucose Patch Sensor with Ultra-low Detection Limit
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Sweat-based glucose sensors are being widely investigated and researched as they facilitate painless and continuous measurement. However, because the concentration of sweat glucose is almost a hundred times lower than that of blood glucose, it is important todevelop electrochemical sensing electrode materials that are highly sensitive to glucose molecules for the detection of low concentrationsof glucose. The preparation of a flexible and ultra-sensitive sensor for detection of sweat glucose is presented in this study. Oxygen andnitrogen are removed from the surface of a polyimide film by exposure to a CO2 laser; hence, laser-induced graphene (LIG) is formed. The fabricated LIG electrode showed favorable properties of high roughness and good stability, flexibility, and conductivity. After thelaser scanning, Pt nanoparticles (PtNP) with good catalytic behavior were electrodeposited and the glucose sensor thus developed, witha LIG/PtNP hybrid electrode, exhibited a high order of sensitivity and detection limit for sweat glucose.
Abstract
Sweat-based glucose sensors are being widely investigated and researched as they facilitate painless and continuous measurement. However, because the concentration of sweat glucose is almost a hundred times lower than that of blood glucose, it is important todevelop electrochemical sensing electrode materials that are highly sensitive to glucose molecules for the detection of low concentrationsof glucose. The preparation of a flexible and ultra-sensitive sensor for detection of sweat glucose is presented in this study. Oxygen andnitrogen are removed from the surface of a polyimide film by exposure to a CO2 laser; hence, laser-induced graphene (LIG) is formed. The fabricated LIG electrode showed favorable properties of high roughness and good stability, flexibility, and conductivity. After thelaser scanning, Pt nanoparticles (PtNP) with good catalytic behavior were electrodeposited and the glucose sensor thus developed, witha LIG/PtNP hybrid electrode, exhibited a high order of sensitivity and detection limit for sweat glucose.
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