<p style="text-align:justify"><em>Optoelectronics detect or emit light and are used in a variety of devices in many different industries. These devices have historically relied on thin transistors, which are small semiconductors that control the movement of electrons and photons, made out of graphene and other two-dimensional materials. However, graphene and these other materials often have problems with band gap opening and other shortcomings that have researchers searching for an alternative.</em></p>
A dog's sense of smell is so powerful, it's inspired sensors that detect explosives and other dangerous weapons. But which is better: canine or machine?
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The LAPD plans to acquire a canine-like robot. Authorities say the technology will help, but critics worry the technology will mostly be used in poor areas.
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