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Accurate and Robust pH Sensor Made From Hydrogels

February 10th, 2011 Scott Jung News

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Purdue University researchers are developing a new hydrogel pH sensor that’s based on a fairly simple design. Depending on the acidity of the environment the sensor is in, thin strips of hydrogel will contract or expand to specific sizes. The sizes of the hydrogel strips are measured precisely with a laser, creating a unique diffraction pattern, somewhat analogous to how a compact disc works. The diffraction patterns can be translated to a precise pH value.
Not only is the design simple, but the researchers are touting the new sensor as more practical: low-cost, highly sensitive, and extremely robust. Such sensors could be used in a variety of chemical and biological applications, such as environmental monitoring in water and glucose monitoring in blood.
Article @ Purdue University: Hydrogels used to make precise new sensor…
Abstract or Full paper…

Scott Jung

Scott Jung (@scottjung) is a Silicon Valley-based medical and health technology reporter and advocate, with a focus on wearables, telemedicine, and health technology in emerging countries. He has represented Medgadget at CES and Digital Health Summit, TEDMED, Stanford Medicine X, and SXSW. Always on the lookout for innovative medical technology worldwide, Scott has been invited to visit Colombia, Poland, and many other countries around the world to share how medtech is enriching the lives of its people. Scott holds a B.S. degree in Biomedical Engineering from the University of Southern California and an M.S. degree in Medical Product Development Management from San José State University. Scott is always looking for the next big thing in medical technology and digital health. Interested in helping him transform lives? Get in touch with him at http://scottju.ng

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