15.02.10
It can be disadvantageous to replace batteries in devices that need to work over yearn periods of time. Doctors might have to get beneath a patient's outside to replace batteries for implanted biomedical monitoring or treatment systems. Batteries acclimated to in devices that monitor machinery, infrastructure or industrial installations may be crammed into dispassionate-to-reach nooks or distributed over wide areas that are often onerous to access.
But new technology being developed by MIT researchers could make such replacements dispensable.
Soon, such devices could be powered just by differences in temperature between the remains (or another warm object) and the surrounding air, eliminating or reducing the neediness for a battery. They would use new energy-scavenging systems being developed by Anantha Chandrakasan, MIT's Joseph F. and Nancy P. Keithley Professor of Electrical Engineering and pilot of the MIT Microsystems Technology Laboratories, and Yogesh Ramadass SM '06, PhD '09.
Such a system, for exempli gratia, could enable 24-hour-a-day monitoring of heart rank, blood sugar or other biomedical data, through a simple mechanism worn on a patient's arm or a leg and powered by the body's temperature (which, except on a 98.6-position F summer day, would always be different from the surrounding air). A similarly powered system could invigilator the warm exhaust gases in the flues of a chemical establish, or air quality in the ducts of a heating and ventilation system.
Source: Azom.com