Symmetrical Gear Spins One-Way, Harvesting Surrounding Chaos

Here’s a novel ratchet mechanism developed by researchers that demonstrates how a single object — in this case a gear shaped like a six-pointed star — can rectify the disordered e…

Droplet Watch Keeps Time Via Electrowetting

Hackers just can’t help but turn their sights on timepieces, and [Armin Bindzus] has designed an electrowetting-based watch. Electrowetting is a way of changing the contact angle of droplets …

High Voltage Power Supply From USB

Those who work in different spaces may have different definitions of the term “high voltage”. For someone working on the GPIO pins of a Raspberry Pi it might be as little as 5 volts, so…