Heat check on a chip: Nanoscalechip can detect sub-microwatt changes in temperature
(PHYSorg.com Nanotechnology)

Scientists working in medical research, biology, cellular studies, and in understanding bacteria and other pathogens often need to know about temperature rises and falls in the systems on which they focus. Many processes involve heat production and tracking those changes can get to the core of understanding a process, diagnosing a disease or perhaps investigating whether a pharmaceutical, such as an antibiotic, will work.