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Power/Performance Bits: Jan. 3


Optical device integration Researchers from the University of Strathclyde, University of Glasgow, and the Australian National University propose a way to place multiple micron-scale optical devices made from different materials close together on a single silicon chip. “The development of electronics that are based on silicon transistors has enabled increasingly more powerful and flexible ... » read more

Weight Adjustable Photonic Synapse by Nonlinear Gain in a Vertical Cavity Semiconductor Optical Amplifier


Abstract: "In this paper, we report a high-speed and tunable photonic synaptic element based on a vertical cavity semiconductor optical amplifier (VCSOA) operating with short (150 ps-long) and low-energy (μW peak power) light pulses. By exploiting nonlinear gain properties of VCSOAs when subject to external optical injection, our system permits full weight tunability of sub-ns input light p... » read more

Power/Performance Bits: Feb. 11


Body heat harvesting Chemists at the University of Massachusetts Amherst developed a fabric that can harvest body heat to power small wearable electronics such as activity trackers. The device works on the thermoelectric effect created by body temperature and ambient cooler air. "What we have developed is a way to inexpensively vapor-print biocompatible, flexible and lightweight polymer fil... » read more