Chipmaker STMicroelectronics is joining in the race to develop fuel cells for portable equipment. Its Geneva, Switzerland research center has developed a 3D technique for making the membranes found in fuel cells. Using nanoporous layers made from silicon provides millions of pores that measure only a few nanometers in diameter, yielding more surface area for chemical reactions to take place. The company did not estimate a timeframe for commercialization.
With erupting concern over police brutality, law enforcement agencies are turning to body-worn cameras to collect evidence and protect police and suspects. But how do they work? And are they even really effective?
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