TechnischeUniversiteitEindhoven
Latest
Tiny wireless sensor never needs a battery
The internet of things is a nice idea, but there's one big catch: you have to power all those smart devices, which is no mean feat when some of them might not even have room for a battery. Dutch researchers think they have a solution, though. They've built an extra-small (2 square millimeters) wireless temperature sensor that gets its power from the radio waves that make up its wireless network. All it needs is energy from a nearby router -- once there's enough, it powers up and starts working.
Nanowires help produce hydrogen fuel using sunlight
You ideally want to produce clean hydrogen fuel using clean sources, and Dutch researchers have taken a big step toward making that a practical reality. They've built a solar cell that uses a grid of gallium phosphide nanowires to make hydrogen gas from water. The approach gets a useful yield of about 2.9 percent in lab tests. That may not sound like much, but it's about 10 times more effective than previous techniques and uses 10,000 times less exotic material.
