Rectifying antennas – "rectennas" – are used as parasitic power capture devices that absorb radio frequency (RF) energy
and convert it into usable electrical power. Constructing such devices to absorb and rectify at optical wavelengths has proved impractical in the past, but the advent of carbon nanotubes and advances in microscopic manufacturing technology have allowed engineers at the
Georgia Institute of Technology to create rectennas that capture
and convert light to direct electrical current. The researchers believe that their
creation may eventually help double the efficiency of solar energy harvesting.
Whether you call them tacks or push pins, German cyberpunk weapons-maker Patrick Priebe
has created a one-off sniper rifle that shoots them as ammo. As can be
seen in the video that he sent us, it's surprisingly accurate, too – all
the watermelons out there better be on the lookout.
Scientists at the University of Twente in the Netherlands have devised a new type of electronic chip that takes after the human brain. Their device is highly power-conscious, massively parallel, and can manipulate data in arbitrary ways – even though it doesn't need to be explicitely designed to perform any task. The advance could pave the way for computers that think more like we do.
WallJax is a simple solution for making wireless charging that little bit more convenient than it already is, providing a fixed home for your charging needs. The product is available in two flavors, and is set to hit Kickstarter early next month.
Think of wind turbines and massive blades spinning above Kansas prairies or off Danish coastlines are probably what comes to mind, but Minnesota-based Janulus has developed something a little more portable. Having found crowdfunding success in 2014 with its 12-inch (30 cm) cylindrical vertical axis (Savonius) type Trinity wind turbine, the company is now returning to the well for an updated version that is available in four different sizes and switches between horizontal and vertical axis form factors.
Trackers such as Tile and Button TrackR that link up with smartphones through custom apps can help us keep tabs on cherished belongings. But what if a tracker could not only locate a lost item, but also warn us before the item gets left behind? This is the main premise of The O.
The ZeroLemon SolarJuice is a uniquely powerful backup power supply — it holds 20,000mAh of energy on a full charge, and can then refill itself by sunbathing. Right now, it is half price at Gizmag Store.
As the doors close on another packed IFA at Berlin's Messe fairgrounds
and exhibitors begin dismantling booths and packing away all the
consumer tech treasures, Gizmag takes a look back at three technology
trends that battled it out for showstopper supremacy at IFA 2015. Connected appliances came into the spotlight to take center stage, slightly overshadowing a strong showing from smartwatches, with HDR TV technology elbowing in to herald the next big thing in living room entertainment.
XYZ Printing's Handheld 3D Scanner is low-cost and convenient, providing
users with a compact tool for producing full-color 3D models. Gizmag
saw the device – which makes use of Intel RealSense tech – in action at
If your computer has a USB 3.0 port, you should be enjoying transfer speeds of up to 5Gbps. The ZeroLemon 4-Port Hub lets you cut the plugging in and out, but keep the speed — and it’s currently on offer for 25% off at Gizmag Store.