A Novel pH Sensor for Detecting Local Pathologies
May 12, 2015 | Terry Sharrer
Biomedical engineers at the National Institute of Standards and Technology and at the National Institute of Health have designed a novel pH sensor that is much smaller than a human red blood cell. It consists of two metal magnetic nanodisks, separated by a hydrogel layer that expand or contract in the presence of an acid environment (as exist in the local area of a tumor or infection). Radio frequency detects the change in the magnetic field between the disks. MORE
Image Credit: NIST