Editor’s Picks

  1. Scientists Develop Tiny Tooth-Mounted Sensors That Can Track What You Eat

    Monitoring in real time what happens in and around our bodies can be invaluable in the context of health care or clinical studies, but not so easy to do. That could soon change thanks to new, miniaturized sensors developed by researchers at the Tufts University School of Engineering that, when mounted directly on a tooth and communicating wirelessly with a mobile device, can transmit information on glucose, salt and alcohol intake.

  2. When Sound Waves Do The Twist – Backwards!

    Scientists based in the UK and the US have demonstrated for the first time how ‘twisted’ sound waves from a rotating source can produce negative frequencies, analogous to turning back time.

  3. Scientists Use Diamond In First Continuous Room-Temperature Solid-State Maser

    The maser (microwave amplification by stimulated emission of radiation), the older microwave frequency sibling of the laser, was invented in 1954. However unlike lasers, which have become widespread, masers are much less widely used because in order to function they must be cooled to temperatures close to absolute zero (-273°C).

  4. HAARP Facility To Resume Ionospheric Research

    Alaska’s super-power High-Frequency Active Auroral Research Program (HAARP) transmitters in Gakona, Alaska, will fire up again for the spring research campaign April 6 – 14. University of Alaska Fairbanks (UAF) Space Physics Group researcher and HAARP Chief Scientist Chris Fallen, KL3WX, told ARRL that more than 40 hours of “externally funded” experiments are in the queue.

  5. Cat-Like ‘Hearing’ With Device Trillions Times Smaller Than Human Eardrum

    Researchers at Case Western Reserve University are developing atomically thin “drumheads” able to receive and transmit signals across a radio frequency range far greater than what we can hear with the human ear.

  6. 'Swiss Army Knife' For Electron Beams

    Researchers at DESY have built a mini-particle accelerator that can perform four different functions at the press of a button. The experimental device called STEAM operates on terahertz radiation and can accelerate, compress, focus and analyze electron packets.

  7. FCC Seeks To Expand Use Of & Investment In 4.9 GHz Band

    The Federal Communications Commission recently proposed action to promote more flexible and intensive use of the 4.9 GHz band, a segment of spectrum designated for public safety communications.

  8. First-Ever Spectrum Sharing Between Military And Commercial Wireless Users

    For the past three years, an important broker has had its eyes on a prime piece of property that it wants to allocate to multiple tenants to ensure maximum use.