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by Keyword: Tear analysis


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Romeo, Agostino, Moya, Ana, Leung, Tammy S., Gabriel, Gemma, Villa, Rosa, Sánchez, Samuel, (2018). Inkjet printed flexible non-enzymatic glucose sensor for tear fluid analysis Applied Materials Today , 10, 133-141

Here, we present a flexible and low-cost inkjet printed electrochemical sensor for enzyme-free glucose analysis. Versatility, short fabrication time and low cost make inkjet printing a valuable alternative to traditional sensor manufacturing techniques. We fabricated electro-chemical glucose sensors by inkjet printing electrodes on a flexible polyethylene terephthalate substrate. CuO microparticles were used to modify our electrodes, leading to a sensitive, stable and cost-effective platform for non-enzymatic detection of glucose. Selectivity, reproducibility, and life-time provided by the CuO functionalization demonstrated that these sensors are reliable tools for personalized diagnostics and self-assessment of an individual's health. The detection of glucose at concentrations matching that of tear fluid allows us to envisage applications in ocular diagnostics, where painless and non-invasive monitoring of diabetes can be achieved by analyzing glucose contained in tears.

Keywords: Inkjet printing, Non-enzymatic sensor, Glucose, Copper oxide, Tear analysis