A person takes an average of 7,000 steps per day, a logical starting-point for Angel Casimiro's concept.
It's common for high-end watchmakers to include piezoelectric elements in watches, using your swinging wrist, rather than a battery, to keep it powered. New research hints that future gadgets could include something similar by way of genetically engineered viruses.
You're not going to be using your heart as a power generator for your cellphone anytime soon, but it soon might come in handy for powering a medical implant or embedded sensor. Scientists at Georgia Tech are first trying out their Muscle-Driven In Vivo Nanogenerator idea on rats, using a minuscule nanowire to convert the motion of flexing muscles into electric current using piezoelectric energy.
Run cold water into the Piezo Shower's organic-looking series of pipes, and without adding any extra power, you get a hot shower spraying out the top. It works by introducing friction and vibration to tiny fibers embedded within these thin...