Wooden tongue depressor multiplex saliva biosensor

“Herein, we [at National and Kapodistrian University of Athens, Greece], describe the first wooden (bio)sensing device fabricated via diode laser-induced graphitization. For this purpose, a wooden tongue depressor (WTD) is laser-treated and converted to an electrochemical multiplex biosensing device for oral fluid analysis. A low-cost laser engraver, equipped with a low-power (0.5 W) diode laser, programmably irradiates the surface of the WTD, forming two mini electrochemical cells (e-cells for detecting nitrite and glucose).”    MORE

Image Credit:  Pubs.acs.org