Researchers at the University of Michigan have developed a tiny solar powered sensor - 1,000 times smaller than comparable commercial counterparts.
The system’s processor, solar cells, and battery are all contained in a frame measuring 2.5 x 3.5 x 1mm. The system contains the ARM Cortex-M3 processor, which uses about 2,000 times less power in sleep mode than its most energy-efficient counterpart on the market today.






