Articles tagged with Wavelengths
The NIST team has developed a directional color filter that can manipulate multiple wavelengths of light simultaneously and detect the source of incoming light. The device uses a nonuniform grid to selectively filter white light based on its angle of illumination, enabling applications in displays, solar energy harvesting, and sensing.
The HRL team will use magnetoelastic material for man-portable low-frequency radio antennas, enabling communication in traditionally radio-denied conditions. The project aims to create a communications system that transmits at less than a thousand hertz and is man-portable.
Researchers at Brookhaven National Laboratory developed a method to reduce surface reflections from glass surfaces to nearly zero by etching tiny nanoscale features into them. This achievement could enhance solar cell efficiency, improve electronic display use, and support high-power laser applications.
Researchers at University College London have developed a new receiver technology that provides consistently high-speed broadband connectivity. The technology enables dedicated data rates of over 10,000 megabits-per-second (Mb/s) for low-cost broadband connections to every UK home.
Scientists have successfully developed a zero-index waveguide compatible with current silicon photonic technologies, allowing them to observe standing waves with infinitely-long wavelengths. This breakthrough could enable the creation of ultra-compact optical devices and pave the way for new quantum computing applications.
Researchers at USC Viterbi School of Engineering have developed a new type of microlaser that uses gold nanoparticles to improve frequency comb technology. This innovation enables the creation of smaller, more efficient systems for applications such as portable chemical spectroscopy and cybersecurity.
The NEMONIC project aims to develop and widely share new optical brain-imaging techniques, enabling the recording of brain cells in action. The team, led by UCSB scientists, uses light to measure brain activity, overcoming technological bottlenecks to understanding the mind and brain.
Researchers have developed a new type of dye-doped WGM micro-laser that produces light with tunable wavelengths, offering broader tuning ranges and reversible tuning. The devices also exhibit enhanced sensitivity in refractive index sensing.
Researchers at Imperial College London have created a filter that can switch between reflecting and transmitting light by fine-tuning the distance between nanoparticles in a single layer. This development could lead to the creation of special materials with real-time tunable optical properties.
A team of researchers discovered a way to use ultraviolet light observations to determine characteristics of superluminous supernovae previously unknown. They found that Gaia16apd was most likely an shock-interacting supernova, and their technique could help identify the explosion mechanism of future supernovae.
Researchers demonstrated a region of very deep contrast between a simulated star and its planet, achieving an 18% bandpass. This milestone is crucial for future missions like WFIRST to detect and analyze the atmospheres of giant planets.
A new diagnostic tool uses near-infrared light to identify high-risk arterial plaques, which can lead to blood clots, heart attacks, and strokes. By selectively identifying rupture-prone deposits, doctors may be able to detect the threat of an imminent heart attack earlier.
Researchers developed laser-driven plasma acceleration using low-energy, ultrashort mid-infrared laser pulses, producing relativistic electron beams. The team's findings demonstrate the potential of long-wavelength femtosecond lasers for compact and high-repetition-rate accelerators.
A NASA-led CubeSat mission, CUVE, is designed to investigate the nature of a mysterious absorber in Venus' uppermost cloud layer. The mission will utilize ultraviolet-sensitive instruments and a novel carbon-nanotube light-gathering mirror to gather data.
Researchers have produced single-photon emitters at room temperature using carbon nanotubes, enabling optically-based quantum information processing. The emitters can be tuned to telecommunications wavelengths, making them suitable for ultrasensitive sensing, metrology, and imaging applications.
Researchers created nanostructures with varying widths that absorb different wavelengths of light, generating an electric current corresponding to the absorbed wavelength. The new detectors operate faster and detect a wider range of electromagnetic spectrum than traditional devices.
Researchers at Queen Mary University of London discovered a 'gap' in liquid wave spectra, allowing only short-wavelength solid-like waves to propagate. This finding paves the way for developing a consistent theory of liquids and has implications for industrial processes.
Researchers from KIT and EPFL demonstrated a novel method for generating frequency combs in optical microresonators, enabling data transmission rates of over 50 terabits per second. This breakthrough uses soliton frequency combs to increase the performance of wavelength division multiplexing techniques in optical communications.
Researchers from NC State University developed an ultra-thin sound diffuser that is 10 times thinner than existing designs, reducing echoes and improving sound quality. The new design uses less material and takes up less space, making it lighter and less expensive.
Researchers create a structure composed of nanometrically thin layers, where minute changes in thickness can be sensed using specific angle of incidence. The discovery demonstrates Anderson localization in a regime thought to have vanishingly small effects, revealing the importance of disorder on optical behavior.
Researchers at Hokkaido University developed a gold compound that turns invisible when ground into a fine powder, emitting only infrared light. The substance's unique property has significant implications for bioimaging and the creation of invisible security inks.
Researchers measured transition between energy levels of lithium-like bismuth ions with unprecedented precision, contradicting existing theories. The discrepancy raises questions about the understanding of electron interaction with complex inner nuclear structures.
Researchers at Penn State have developed a fast, non-destructive optical method for analyzing defects in 2D materials. This new technique uses fluorescent microscopy to identify defects and correlates the results with visual confirmation under transmission electron microscopy.
Researchers have developed a prototype for a spin-wave majority logic gate that utilizes wave interference to process information. This innovation uses spin waves instead of classical currents or voltages, enabling the creation of nanoscale devices with improved efficiency and reliability.
The Cerro Chajnantor Atacama Telescope-prime (CCAT-p) will map the sky at submillimeter and millimeter wavelengths, giving unprecedented insights into star and galaxy formation. The telescope's high-altitude location and innovative design enable faster measurements of polarized signals, revealing clues about the universe's early moments.
A massive protostar underwent an intense growth spurt, reshaping its surroundings and emitting nearly 100 times more light. This event supports the theory that young stars can experience dramatic growth spurts, which may be triggered by star-forming gas crashing onto their surfaces.
A Cornell research group has reported progress in creating a smaller, more earth-friendly alternative to mercury-based deep-UV lamps. Using atomically controlled thin monolayers of GaN and AlN, they produced deep-UV emission with a light-emitting diode (LED) between 232 and 270 nanometer wavelengths.
The GOES-16 SUVI instrument has successfully captured its first solar images, providing valuable data on coronal plasma temperatures and emission measurements. This will enable the NOAA Space Weather Prediction Center to issue early warnings for potential geomagnetic storms impacting Earth's magnetic field.
A team of German researchers has developed a buried tunnel junction VCSEL with a single-stage type-II active region to extend the wavelength coverage of electrically pumped VCSELs into the mid-infrared range. This achievement demonstrates the potential for low-power, battery-operated gas sensors in various industries.
Researchers are developing a space-based quantum-dot spectrometer that could miniaturize instruments, enabling higher-spectral resolution and more efficient data analysis. The technology uses quantum dots as filters to absorb different wavelengths of light, allowing for precise control over instrument calibration.
A new material developed by UC San Diego engineers can absorb a broad range of infrared wavelengths, enabling potential applications in cooling buildings and cars, enhancing solar cell efficiencies, and blocking thermal detection. The material's unique properties allow it to be customized for specific absorption ranges.
Researchers have developed a new nano-sized semiconductor that concentrates visible light energy, increasing the efficiency of solar cells. This breakthrough doubles current efficiencies to at least 40%, offering benefits in energy efficiency and design.
Researchers found that three Amazonian species have lost or disabled genes for detecting short wavelengths of light, allowing them to thrive in the murky environment. The study reveals a unique genetic adaptation that enables these fish to perceive their surroundings differently.
Researchers at the University of Nottingham have developed a nanoscale ultrasound technique that can see inside individual living cells without damaging them. This breakthrough method could rival optical super-resolution techniques, which won the 2014 Nobel Prize for Chemistry, by using shorter-than-optical wavelengths of sound.
Researchers at DESY and MIT create a miniaturized electron gun that accelerates electrons to high speeds using terahertz radiation. The device has the potential to revolutionize ultrafast electron diffraction experiments and enable new applications in physics and materials science.
Researchers at Aalto University developed a new light detector capturing over 96% of photons covering visible, ultraviolet and infrared wavelengths. The detector's nanostructured surface and inversion layer eliminate reflection losses and electrical losses present in traditional sensors.
Researchers at Technical University of Denmark have demonstrated efficient absorption enhancement at a wavelength of 2 micrometers by graphene plasmons. This breakthrough brings graphene into the regime of telecommunication applications.
Scientists developed a technique to image THz photocurrents with nanoscale resolution, visualizing strongly compressed THz waves in a graphene photodetector. The imaging technique, called THz photocurrent nanoscopy, provides unprecedented possibilities for characterizing optoelectronic properties at THz frequencies.
Researchers at NICT have developed a flexible optical design method for superconducting nanowire single-photon detectors, enabling high detection efficiency over a precise spectral range while rejecting other wavelengths. This technique has potential applications in quantum cryptography, fluorescence spectroscopy, and remote sensing.
Scientists have tracked a particular kind of solar wave as it swept upward from the sun's surface through its atmosphere, adding to our understanding of how solar material travels throughout the sun. The study provides a novel tool for scientists to study the atmosphere of the sun and sheds light on the coronal heating problem.
Researchers have generated femtosecond pulses in mid-infrared wavelengths, opening opportunities for research in physics, chemistry and biomedicine. The new technique allows scientists to study atomic processes taking place in atoms, molecules and solids with unprecedented speed.
AAAS researchers have developed a new type of cloth that can reflect sunlight while allowing heat to radiate from the body, potentially reducing energy costs associated with air conditioning. The fabric, made from nanoporous polyethylene, passes 96% of infrared radiation through its pores, making it highly effective at keeping cool.
Researchers used advanced instrument MOSFIRE to quantify oxygen in COSMOS-1908, a galaxy 12 billion years old. The measurement provides insights into how matter cycles in and out of galaxies, allowing for better understanding of galaxy evolution and formation.
The CO2 Sounder Lidar is a strong contender for the ASCENDS mission, which aims to measure global atmospheric carbon dioxide levels. The instrument uses advanced technologies, including a highly sensitive solid-state detector and a rapidly tuning laser system, to achieve unprecedented precision and resolution.
Scientists design metamaterials that can block or transmit specific wavelengths of light at the command of light pulses, enabling new optical device applications. The new switchable materials have potential to create ultra-thin metasurface lenses and other flat optical components.
Researchers from Aalborg University have developed a heat-resistant device made of tungsten and alumina layers that can absorb sunlight across a broad spectrum, enabling more efficient energy conversion. The device can operate at high temperatures and absorb light from UV to near-infrared wavelengths.
Researchers have discovered new spectral lines from highly charged heavy ions in fusion plasmas, which could be useful for plasma application research such as EUV lithography. The study used the LHD facility to create high-temperature plasmas and observe the emission spectrum of extreme ultraviolet wavelengths.
A novel mid-wavelength infrared phototransistor device has the potential to replace traditional radio-frequency wireless data links. This technology uses low-power and low-cost alternative to FSO communications, providing high-speed data links with reduced limitations.
A new type of portable infrared detector has been developed, operating at room temperature, enabling efficient and compact detection systems. The detector uses an 8x8 array of pixels to sense specific wavelengths of infrared light and convert them into electrical signals.
Researchers at Moscow Institute of Physics and Technology developed a novel ceramic-based laser, twice as effective as other solid-state lasers. The laser is used in surgical operations and has a wavelength that does not damage underlying tissue, making it ideal for medical purposes.
Researchers have successfully generated spin waves with extremely short wavelengths in the nanometer range, a key feature for their future application. The new method uses a magnetic vortex as a nano-antenna, allowing for precise control over the wavelength and wave properties.
University of Illinois researchers introduce nanoscale ripples in graphene using rod-shaped bacteria, creating a new material with unique electronic properties. The resulting material exhibits altered conductivity at right angles to the original direction.
Researchers have found evidence of water clouds in WISE 0855, a nearby brown dwarf that is the coldest known object outside of our solar system. The team used spectroscopic observations to study its composition and chemistry, revealing a spectrum dominated by water vapor and clouds.
Plasmonic lasers use metal films to confine light energy and have potential applications in integrated optics and ultrafast digital processing. The researchers developed a scheme that emits radiation at extremely long wavelengths with a narrow beam divergence angle of just 4 degrees, the narrowest achieved for such terahertz lasers.
Researchers have quantified physical limitations on cloaking devices, allowing for calculation of optimal performance before designing a specific cloak. The new framework establishes boundaries on bandwidth capabilities of electromagnetic cloaks for objects of different sizes and composition.
Researchers have developed a new method to detect atmospheric chemicals using mid-infrared lasers, generating glowing plasma filaments that reveal chemical fingerprints.
A new study found that short blue light exposure can lead to increased brain activity in specific regions and improved reaction times for over 40 minutes after exposure. The research suggests that blue-enriched white light could be used to enhance alertness and quick decision making in various settings.
Researchers from Harvard John A. Paulson School of Engineering and Applied Sciences have demonstrated the first planar lens that works with high efficiency within the visible spectrum of light. The lens can resolve nanoscale features separated by distances smaller than the wavelength of light.
Engineers have found a way to control light waves using a non-periodic material structure. This breakthrough opens up opportunities for faster-switching transistors and white light lasers, enabling devices to selectively block or allow specific wavelengths of light
A team of international researchers has explained the peculiar behavior of electrons in graphene when passing through narrow constrictions. The results show that the electric current is not continuous, but quantized, exhibiting characteristic steps.