In order to help his friend prepare for a talk at DEFCON this weekend, [Craig] built an IR photodiode amplifier circuit. The circuit extended the detection range of the hack from a few inches to ...

This is a schematic of the experimental infrared photodiode that has generated electricity directly from the coldness of space. Journalists may use this image only with appropriate credit.

For the last eight years, a team of researchers at Aalto University in Finland has been working to improve the efficiency of ...