A Smart Device Needs to be Useful, Not Just Clever

With artificial intelligence and voice control, smart microwaves, cameras, and doorbells, could finally catch on Illustration: James Steinberg Over the holidays, droves of consumers bought video doorbells, connected lights, and smart outlets that work with Amazon’s Alexa, Apple’s HomeKit, or Google Home. Plenty of people unwrapped connected speakers and image-processing cameras…

Hail the Perovskite Transistors

Researchers have created a field-effect transistor using a single-crystal, “paint-on” perovskiteTransistors, and the conductive traces that connect them, are routinely created by the billions on the surface of silicon wafers, which are later cut into the individual “chips” that power our computers, phones, watches, and countless other electronic gadgets. But…