Articles tagged with Electromagnetic Spectrum
Scientists create a moiré metasurface to map right- and left-handed regions in materials, visualizing chirality as two-dimensional images. The new approach resolves chirality distributions with a resolution of approximately 100 μm.
Researchers performed the first ab initio calculation of the hexacontatetrapole E6 transition in 53Fe, revealing unique high-multipole gamma decay mechanism using bare nucleon charges. The study successfully reproduces experimental excitation spectrum and provides reliable predictions for electromagnetic transitions.
Southwest Research Institute (SwRI) has opened its first facility outside of Texas in Warner Robins, Georgia, with a 33,000-square-foot, $18.5 million building supporting Air Force and national defense advancements. The new structure houses offices, conference rooms, and laboratories for developing advanced aerospace technology and ele...
Southwest Research Institute (SwRI) has introduced a new indoor antenna measurement range that enables comprehensive 3D radiation pattern data collection for all antenna types. The spherical near-field range offers improved flexibility and accuracy, overcoming size, angle, regulatory, and weather limitations.
Researchers at King's College London and Harvard University develop a detector that can identify axions, leading potential candidates for dark matter. The Axion Quasiparticle (AQ) technology has the potential to discover dark matter in five years with further development.
Researchers have designed an optical device that functions as an optical black hole or white hole, behaving like a cosmic object that either swallows or repels light. This device relies on coherent perfect absorption of light waves and offers new possibilities for manipulating light-matter interactions.
The device enables precise control over terahertz wave polarization, revolutionizing applications such as data transmission, imaging, and sensing. This innovation promises to transform fields like wireless communication and biomedical imaging.
A POSTECH research team developed a novel multidimensional sampling theory to overcome limitations of flat optics. Their study identifies constraints of conventional sampling theories and presents an innovative anti-aliasing strategy, significantly enhancing optical performance.
A team of researchers from the University of Ottawa has developed innovative methods to enhance frequency conversion of terahertz (THz) waves in graphene-based structures, unlocking new potential for faster, more efficient technologies in wireless communication and signal processing. These advancements hold great promise for wireless c...
A first-of-its-kind study from the University of Minnesota Twin Cities utilizes remote sensing technology to monitor plastic debris in freshwater environments like the Mississippi River. The research helps increase understanding of plastic debris behavior in these systems, shedding light on a growing environmental issue.
Researchers have discovered that electrons in certain quantum materials behave like a viscous fluid, allowing for the detection of terahertz waves. This breakthrough enables faster data transfer and advanced medical imaging technologies.
Rice University professor Ashutosh Sabharwal leads a project to design and develop an open-access software-defined radio system for 6G wireless networking, imaging, and sensing. The system will support diverse bands and enable research communities to explore new directions in wireless technology.
Researchers at UCLA have developed a wavelength-multiplexed diffractive optical processor that enables all-optical multiplane quantitative phase imaging. This approach allows for rapid and efficient imaging of specimens across multiple axial planes without the need for digital phase recovery algorithms.
Researchers have developed a novel rigid endoscope system for visible-to-OTN hyperspectral imaging, enabling non-destructive imaging and visualization of lesions in normal tissues. The system demonstrated high accuracy in classifying molecular vibration information of various targets with an OTN wavelength range.
Researchers at Duke University have determined the theoretical fundamental limit for how much electromagnetic energy a transparent material with a given thickness can absorb. This finding has practical implications for applications such as stealth technology and wireless communications.
Researchers at Tohoku University have created a tuneable terahertz wave filter that can achieve higher transmission rates and better signal quality than conventional systems. The new filter uses Fabry-Perot interferometry to control the filtering effect, enabling selective transmission of desired frequencies.
Researchers from Osaka University and IMRA AMERICA have developed a photonics-based wireless link that breaks speed records for data transmission. The system achieved a single-channel transmission rate of 240 gigabits per second using ultra-low phase noise, paving the way for near-instantaneous global communication.
Researchers at Linköping University have developed an aerogel material that can tune the transmission of terahertz signals between 13% and 91%, enabling various applications. The material's absorption property can be adjusted through a redox reaction, making it suitable for long-range signals from space or radar systems.
The University of Kansas has established a virtual institute to train leaders in cybersecurity and electromagnetic spectrum research, partnering with Ohio State and Purdue universities. The VICEROY Virtual Institute will offer courses, scholarships, and hands-on training to combat growing cyber threats.
A hybrid system of electronic encoding and diffractive optical decoding transmits optical information with high fidelity through random, unknown diffusers. The system outperforms traditional approaches that only utilize a diffractive optical network or an electronic neural network for optical information transfer.
Researchers at UBC Okanagan's Integrated Optics Laboratory develop imaging systems that apply terahertz radiation, enabling fast and accurate characterization of biological specimens. This technology holds promise for improving diagnostic imaging and detecting carcinogenesis.
Researchers at Rice University have discovered a metal oxide that can enable terahertz technology for quantum sensing. The material, strontium titanate, exhibits unique properties that allow it to interact strongly with terahertz light, forming new particles called phonon-polaritons.
Researchers developed a one-dimensional suspended high-contrast grating structure to enable directional lasing with high energy efficiency. The device can adjust the emission angle over a wide range, from -40° to +40°, making it suitable for solid-state LiDAR applications.
Researchers at the University of Central Florida have created a technology that converts radio frequency signals into direct current electricity, reducing the need for batteries in wireless systems. This innovation can help promote a more sustainable future by harnessing ambient energy from radio waves.
According to new research led by the University of Bath, some short-duration gamma-ray bursts are triggered by the birth of supramassive stars, not black holes. This discovery may offer a new way to locate neutron star mergers and gravitational wave emitters.
New research develops a low-index BaF2 thin film-based microspectrometer technology for LWIR spectral sensing. The study demonstrates the use of flat and stress-free free-standing distributed Bragg reflectors (DBRs) for high-performance wavelength discrimination in the long-wave infrared region.
Researchers developed first fully integrated parity-time symmetric electronic system, expanding giga-terahertz research capabilities. The system operates without exotic materials, utilizing standard microelectronic fabrication technology.
Mona Jarrahi, a UCLA professor, has been awarded the IET A F Harvey Engineering Research Prize for her pioneering work in utilizing the electromagnetic spectrum. Her research aims to develop a hybrid methodology for designing systems with operation frequencies beyond traditional transistor technologies.
Electrical engineers at Duke University have discovered a way to extend the use of chalcogenide glasses into the visible and ultraviolet parts of the electromagnetic spectrum. By nanostructuring these materials, they can create high-order harmonic frequencies that enable transmission of light at previously inaccessible wavelengths.
Researchers developed a modular organic molecular system with customizable properties, creating a potent dye that absorbs light in the near-infrared range. The pigments' electronic switchability makes them suitable for studying electron transfer in photosynthesis and as efficient electron-transporting materials.
Justin Metcalf, OU assistant professor, received a Young Faculty Award from DARPA to explore how the electromagnetic spectrum has become critically congested. His research aims to develop techniques for radar and communications systems to share frequency bands, enabling defense and commercial users to dynamically share unlicensed bands.
Scientists measured a time delay of 100 milli-seconds between X-rays and optical flashes from the jet emitted by V404 Cygni's black hole. This delay indicates the inner acceleration zone in the jet is approximately 30,000 kilometers away from the event horizon.
Researchers at TIFR devise compact terahertz radiation source using laboratory liquids, achieving energies thousands of times larger than existing sources. The discovery opens doors to applications in terahertz imaging, material analysis, and explosives detection.
University of Kansas researchers aim to optimize communications at 5 gigahertz, a frequency three times farther up the dial than previous test ranges. They will combine higher efficiency modulation with forward error control codes to improve signal transmission and reduce power consumption.
The team's research involves tapping into an unused range in the electromagnetic spectrum and a new microchip technology. This could reduce size and cost while creating images without multiple lenses inside devices.
Scientists at IVIA have created a machine that detects rotten oranges using computer vision. Another prototype classifies mandarin segments by quality and damage. These machines improve efficiency in the fruit selection process.
Researchers from the University of Notre Dame have developed a graphene-based modulator that significantly expands the terahertz signal's modulation range to over 90 percent. This breakthrough replaces traditional metal gates with graphene, enabling more versatile applications in communications, medical imaging, and chemical detection.