Terahertz

Artistic image of the new inspection tool for ultrafast electronics with femtosecond electron beams. Credit & Copyright: Dr. Mikhail Volkov, edited Researchers at the University of Konstanz have successfully filmed the operations of extremely fast electronic circuitry in an electron microscope at a bandwidth of tens of terahertz.The increasing demand for ever-faster information processing has ushered in a new era of research focused on high-speed electronics operating at frequencies nearing terahertz and petahertz…

A cryptographic tag developed at MIT uses terahertz waves to authenticate items by recognizing the unique pattern of microscopic metal particles that are mixed into the glue that sticks the tag to the item’s surface. Credit: Jose-Luis Olivares, MIT. Chip courtesy of the researchersMIT engineers developed a tag that can reveal with near-perfect accuracy whether an item is real or fake. The key is in the glue on the back of the tag.A few years ago, MIT researchers invented a cryptographic ID tag that is several times…

The aerogels are fabricated using aqueous solutions and do not require complex fabrication procedures, thereby holding great promise for large-scale sustainable production at a low cost. Credit: Thor BalkhedResearchers at Linköping University in Sweden have made a significant advancement in the field of terahertz wave technology, as reported in a study published in the journal Advanced Science. They have demonstrated that the transmission of terahertz light can be adjusted when passed through an aerogel composed of…

Terahertz (THz) spectroscopy is an emerging tool in oil shale resource evaluation, offering various applications such as oil identification and THz dating. Scientists are researching its potential, facing challenges but recognizing its significant future role in oil shale exploitation. Credit: SciTechDaily.comResearchers from China University of Petroleum (Beijing) offer a holistic insight into applying terahertz spectroscopy to characterize oil shale.The current understanding of the oil generation potential of oil shale…

RIKEN researchers have developed a handheld device that effectively uses the terahertz band of the electromagnetic spectrum for ‘X-raying’ objects without harmful radiation. By optimizing certain techniques and utilizing specific materials, they significantly improved terahertz wave power output and miniaturized the device. The technology promises various applications including non-destructive imaging and quantum research, with industrial collaborations underway.Using new palm-sized devices, RIKEN researchers may have…

Ultrafast optical field incident on material with broken spatial symmetry (blue), time-reversal symmetry (yellow), or both (green) to generate THz radiation. Insets illustrate various mechanisms that lead to rectified THz currents high-frequency optical fields. Credit: Hou-Tong Chen/Los Alamos National LaboratoryA team of scientists has published an article discussing the utilization of terahertz (THz) emission spectroscopy to reveal the properties of emerging materials, such as quantum materials and low-dimensional ones…

Magnetic spins in YTiO3 are synchronized by THz light, leading to a stronger and higher temperature ferromagnetic phase. Credit: © Jörg Harms, MPSDResearchers have used terahertz light pulses to induce ferromagnetism in a crystal at temperatures far above its normal transition temperature, paving the way for optically controlled memory and computing devices with higher speed and efficiency.Scientists in Germany and the USA have shown for the first time that terahertz (THz) light pulses can stabilize ferromagnetism in a…

Researchers from MIT and elsewhere have built a wake-up receiver that communicates using terahertz waves, which enabled them to produce a chip more than 10 times smaller than similar devices. Their receiver, which also includes authentication to protect it from a certain type of attack, could help preserve the battery life of tiny sensors or robots. Credit: Jose-Luis Olivares/MIT with figure courtesy of the researchersResearchers demonstrate a low-power “wake-up” receiver one-tenth the size of other devices.<span…

By David L. Chandler, Massachusetts Institute of Technology November 13, 2022Illustration shows terahertz illumination (yellow curves at top right) entering the new camera system, where it stimulates quantum dots inside nanoscale holes (shown as illuminated rings) to emit visible light, which is then detected using a CMOS-based chip (bottom left) like those in digital cameras. Credit: Courtesy of the researchersThe new terahertz camera device provides greater sensitivity and speed than previous versions, and could be used…

Terahertz technology could enable advanced scanners for security, medicine, and materials science. It could also enable much faster wireless communications devices than are currently possible.Scientists have discovered a new effect in two-dimensional conductive systems that promises improved performance of terahertz detectors.A recent physics discovery in two-dimensional conductive systems enables a new type of terahertz detector. Terahertz frequencies, which lie between microwave and infrared on the spectrum of…