Hydrogel-based electrochemical sensor for non-invasive and continuous glucose monitoring

Habeen Park; Ji-Young Lee; Dong-Chul Kim; Younggook Koh; Junhoe Cha

doi:10.1117/12.2268332

12 July 2017 Hydrogel-based electrochemical sensor for non-invasive and continuous glucose monitoring

Habeen Park, Ji-Young Lee, Dong-Chul Kim, Younggook Koh, Junhoe Cha

Proceedings Volume 10324, International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy 2017; 1032405 (2017) https://doi.org/10.1117/12.2268332
Event: International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy 2017, 2017, Jeju, Korea, Republic of

Abstract

Monitoring blood glucose level of diabetic patients is crucial in diabetes care from life threating complications. Selfmonitoring blood glucose (SMBG) that involves finger prick to draw blood samples into the measurement system is a widely-used method of routine measurement of blood glucose levels to date. SMBG includes, however, unavoidable pain problems resulting from the repetitive measurements. We hereby present a hydrogel-based electrochemical (H-EC) sensor to monitor the glucose level, non-invasively. Glucose oxidase (GOx) was immobilized in the disc-type hydroxyethyl methacrylate (HEMA) based hydrogel and kept intact in the hydrogel. Fast electron transfer mediated by Prussian blue (PB, hexacyanoferrate) generated efficient signal amplifications to facilitate the detection of the extracted glucose from the interstitial fluid. The linear response and the selectivity against glucose of the H-EC sensor were validated by chronoamperometry. For the practical use, the outcomes from the correlation of the extracted glucose concentration and the blood glucose value by on-body extraction, as well as the validation of the hydrogel-based electrochemical (H-EC) device, were applied to the on-body glucose monitoring.

Citation Download Citation

Habeen Park, Ji-Young Lee, Dong-Chul Kim, Younggook Koh, and Junhoe Cha "Hydrogel-based electrochemical sensor for non-invasive and continuous glucose monitoring", Proc. SPIE 10324, International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy 2017, 1032405 (12 July 2017); https://doi.org/10.1117/12.2268332

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