Browsing by Author "Vänskä, Risto"

Blood glucose monitoring (BGM) is an essential part of diabetes management. Currently available BGM technologies are invasive by nature, and require either sampling blood or an invasive needlelike sensor to be inserted under the skin. Extraction of interstitial fluid using magnetohydrodynamics is proposed as a technology to enable truly non-invasive glucose monitoring. Presently, only direct current (DC) has been investigated to be employed for magnetohydrodynamic extraction of interstitial fluid. In this study we studied in a skin model whether the extraction rate of magnetohydrodynamic extraction can be increased by using a unipolar square wave, with same time-averaged current as DC extraction used as a control. The results indicate a 2.3-fold increase in the average extraction rate, when unipolar square wave of double intensity is applied, as compared to DC. The results serve towards reducing the measurement time in non-invasive glucose monitoring systems utilizing magnetohydrodynamic extraction.