Discover how to build a portable DIY solar charger for your smartphone using simple materials like copper foil tape, a micro-USB cable, and hot glue. This step-by-step tutorial guides you through each ...
Sensors small enough to disappear into the body, microrobots that move without wires, and smart systems hidden inside ...
Solid-state batteries could store more energy and charge faster than today’s batteries, but they tend to crack and fail over time. Stanford researchers found that a nanoscale silver treatment can ...