MTL News Archives for 2015

Toward tiny, solar-powered sensors

June 23, 2015

New ultralow-power circuit improves efficiency of energy harvesting to more than 80 percent.

The MIT researchers' prototype for a chip measuring 3 millimeters by 3 millimeters. The magnified detail shows the chip's main control circuitry, including the startup electronics; the controller that determines whether to charge the battery, power a device, or both; and the array of switches that control current flow to an external inductor coil. This active area measures just 2.2 millimeters by 1.1 millimeters. Photo courtesy of the researchers.

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