Analog computing from waste heat

Analog computing from waste heat Harnessing heat generated by a device itself, microscopic silicon structures could lead to more energy-efficient thermal sensing and signal processing. Heat generated by electronic devices is usually a problem, but a team led by Giuseppe Romano, a research scientist at MIT’s Institute for Soldier Nanotechnologies, has found a way to use it for data processing that doesn’t rely on electricity. In this analog computing method, input data is encoded not as binary 1s and 0s but as a set of temperatures based on the waste heat already present in a device. The flow and distribution of that heat through tiny silicon structures, designed by a physics-based optimization algorithm they developed, forms the basis of the calculation. Then the output is represented by the power collected at the other end. The researchers used these structures to…