Electromagnetic

Improvised Explosive Devices (IEDs) have attracted a lot of attention as a result of their use in Iraq and Afghanistan, but IEDs are used by guerillas and terrorist groups in many parts of the world, including Colombia. Being sensitive to the problem of IEDs, two Colombian doctoral students from the Ecole Polytechnique Federale de Lausanne (EPFL) set about looking for a way to explode such devices at a distance. In collaboration with two Colombian Universities the EPFL students developed a device that can explode IEDs remotely by using energy from their electromagnetic impulses.  Read More

We're all aware of how annoying a tangled mass of electrical wires can be. Fortunately, a research effort from Fujitsu is tackling the problem at its very source. During a conference held in the Institute of Electronics, Information and Communication Engineers at Osaka Prefecture University, the Japanese electronics giant announced a major step in developing a wireless recharging technology that can work simultaneously with multiple portable devices.  Read More

A number of kinetic energy chargers have been hitting the market in recent years including the nPower PEG. Researchers have also been working to improve the technology, developing such devices as the Kinetic Energy Cell and a tiny generator that derives electrical energy from the vibrations and movements that occur within its environment. Now Brother Industries Ltd., a company better known for its printers, has put the technology into a form factor that should prove much more versatile – a battery. Its Vibration Energy Cell batteries are deigned to replace AA or AAA batteries in some low power devices that can then be powered with a shake.  Read More

Researchers at Southeast University in Nanjing, China have created a device that traps and absorbs electromagnetic waves coming from all directions, spiraling them inwards without any reflections, essentially creating an electromagnetic black hole. Qiang Cheng and Tie Jun Cui’s “omnidirectional electromagnetic absorber” draws in microwaves coming from any direction by spiraling radiation inwards, and converting its energy into heat. They plan on developing a device that can absorb visible light next.  Read More

Only 10-16 percent of the fuel energy is used to drive the car during everyday usage – that is, to overcome the resistance from road friction and air drag and actually transport the vehicle forward. That amounts to a lot of energy being wasted. Hybrid cars recapture some of the energy usually lost in braking but the dissipation of vibration energy by shock absorbers in the vehicle suspension remains an untapped source of potential energy. To harvest this lost energy, researchers have designed and tested a shock absorber that can be retrofitted to cars to convert the kinetic energy of suspension vibration between the wheel and sprung mass into useful electrical power.  Read More

The commercialization of Online Electric Vehicle (OLEV) technology developed by researchers at the Korea Advanced Institute of Science and Technology (KAIST) has taken another step forward with the introduction of an OLEV “train” for public transportation in Seoul’s Grand Park in Gwacheon City. The vehicle picks up electricity from power cables buried underground through a non-contact magnetic charging method and replaces a trackless combustion engine train running inside the park.  Read More

A Harry Potter-style invisibility cloak is one more step closer to reality thanks to the work of a research team at the FOM Institute for Atomic and Molecular Physics (AMOLF) in the Netherlands, which has successfully harnessed the magnetic field of light to develop meta-materials that can deflect light in every possible direction.  Read More

A network of cameras deployed around the Arctic to understand the trigger mechanism for the beautiful light display called the aurora borealis – also known as the Northern Lights – has discovered that sometimes the vast curtains of aurora borealis collide, producing a stunning outburst. The reason no one on Earth has ever noticed these collisions before is that they occur on such a vast scale it takes a network of sensitive cameras spread across thousands of miles to get the whole picture.  Read More

Remember that zany Irish company Steorn, who claimed to have built a working perpetual motion machine that could produce clean, free energy out of a few magnets and some plastic discs? Well, they're back again. Undeterred by the fact that their own hand-picked jury of scientific judges unanimously agreed that the technology didn't work, Steorn has put its Orbo perpetual motion machine out for public display, and set up web feeds through which you can watch the thing in motion. But the demonstration has failed to impress critics, and for good reasons.  Read More