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Colin Jeffrey

Electronics

Miniature fuel cell to keep drones aloft for over an hour and phones charged for a week

Drones are being utilized in everything from parcel delivery to search and rescue, but their limited flight times are restricting their ability to travel great distances or stay for extended periods of time in the field. Simply adding more batteries, however, affects flight characteristics and reduces the load the drone can carry. To help solve this problem, researchers at the Pohang University of Science and Technology (Postech) have created a miniature fuel cell they claim not only provides enough energy to keep a drone in the sky for over an hour, but may well find applications in powering everything from smartphones to cars in the not-too-distant future.Read More

Automotive

Pininfarina showcases silky-smooth, hydrogen-powered H2 Speed concept

Pininfarina, the Italian design and engineering firm often employed by the likes of Ferrari and Maserati to sketch and build their prototypes, has debuted its own radical hydrogen-fuel cell supercar concept at the 2016 Geneva Motor Show. Dubbed the H2 Speed, the combined power output from its two electric motors is around 370 kW (500 hp) – produced at a dizzying 13,000 rpm. With water being the only exhaust emission, the company believes that the H2 Speed concept is the embodiment of sportiness, performance, and pure driving fun in an environmentally responsible package.Read More

Science

Triple entanglement feat adds new twist to quantum cryptography

In the world of quantum mechanics, entanglement is a weird realm where particles that were once joined exhibit mirror-opposite reactions when separated, even when they are vast distances apart. Now researchers from the University of Vienna and the Universitat Autonoma de Barcelona have added a new twist to this phenomenon, by entangling three photons and adding a 3-D corkscrew motion to effectively allow multiple recipients to simultaneously receive information securely encoded in the one transmission.Read More

Electronics

Thinnest, lightest, solar cells ever created outperform their bulky glass brethren

Using gossamer-like layers of flexible polymers, researchers at MIT have created the thinnest and lightest solar cells ever made. Just one-fiftieth the thickness of a human hair, and capable of producing up to 6 watts of power per gram, these cells are so thin and light that they can be supported on the surface of a soap bubble without breaking it. With such impressive credentials, the prototype cells have the potential to add solar power to everything from paper-based electronics through to all manner of mobile devices and exceptionally lightweight wearables. Read More

Space

Charge injection device boosts chances of detecting Earth-like planets near bright stars

The quest to find small, Earth-like exoplanets isn't just a matter of pointing an exceptionally powerful telescope towards a star, as one may do to observe moons orbiting a planet. Apart from resolving images adequately in relation to the enormous distances involved, the glare from a distant sun often washes out the image of anything but the largest of planetary bodies in its vicinity. To help combat this problem, researchers at the Florida Institute of Technology (FIT) have developed a new type of astronomical camera that can detect the faint reflections of distant worlds near bright stars many millions of times better than that possible with an ordinary telescope. Read More

Energy

Liquid hydrocarbon fuel created from CO2 and water in breakthrough one-step process

As scientists look for ways to help remove excess carbon dioxide from the atmosphere, a number of experiments have focused on employing this gas to create usable fuels. Both hydrogen and methanol have resulted from such experiments, but the processes often involve a range of intricate steps and a variety of methods. Now researchers have demonstrated a one-step conversion of carbon dioxide and water directly into a simple and inexpensive liquid hydrocarbon fuel using a combination of high-intensity light, concentrated heat, and high pressure.Read More

Materials

Acoustic metasurface design completely absorbs low frequency sound

Absorbing low frequency sound is a big job, or at least, a job for big things. Acoustic absorption systems require big resonant cavities with large amounts of heavy damping material and significant surface areas to work efficiently. Consequently, the sound-deadening systems used in music studios and anechoic chambers take up a lot of room. Now scientists have flipped this notion on its head by designing coiled metasurfaces that not only completely absorb low frequency sounds, but are a tiny fraction of the size of traditional sound-absorbing systems.Read More

Drones

Nesting platform takes smart drone capabilities to new heights

The proliferation of drones for a multitude of tasks has led to improved autonomy, and reduced the level of human intervention. On the flip side, however, people are still needed to physically wrangle drones to a site whenever they are required, and much time and expense is spent deploying them. To help reduce this burden, the new Dronebox nesting platform has been created to provide 24/7 autonomous capabilities to drones. It provides an automated recharging and storage station that can be left on site so a dedicated Unmanned Aerial Vehicle (UAV) can be deployed on-call or routinely for many months at a time.Read More

Automotive

Riversimple launches Rasa, a hydrogen-powered city car for the masses

A new hydrogen fuel-cell electric vehicle prototype has been launched with a claimed fuel economy equivalent to 250 mpg (88.5 km/l). Dubbed "Rasa", the new car has a lightweight carbon-fiber monocoque shell, in-wheel electric motors, a bank of supercapacitors charged by braking-regeneration, and a host of other features that enable it to travel up to a claimed 300 miles (483 km) on just a 3.3 lb (1.5 kg) tank of hydrogen.Read More

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