Gel puts sensors in a new light

摘要

A THIN FILM OF A NOVEL GEL CAN SERVE AS A FAST and inexpensive sensor for pressure,temperature,pH,humidity and other variables,believe researchers at the Massachusetts Institute of Technology,Cambridge,Mass.The material responds quickly to changes and provides a far greater color range than other gels,says Edwin Thomas,professor and head of the school's Department of Materials Science and Engineering.