Articles tagged with Wavelengths
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.
Researchers at Rice University have developed a new cancer-imaging technique that uses carbon nanotubes tagged with antibodies to pinpoint the location of tumors. The technique, known as spectral triangulation, uses non-invasive optical measurements to determine the depth and coordinates of the nanotube beacons in tissue.
Dennis Reuter and his team are selected as finalists for the Samuel J. Heyman Service to America Medal for their contributions to the New Horizons mission to Pluto. The LEISA instrument provided groundbreaking data on Pluto's surface composition, expanding scientists' understanding of the outer solar system.
Three exoplanets, similar to Earth and Venus, orbit an ultracool dwarf star just 40 light years from Earth. The planets may have regions with temperatures suitable for liquid water and life.
A team of researchers has successfully built the first quantum cascade laser on silicon, paving the way for applications in chemical bond spectroscopy, gas sensing, astronomy, and free-space communications. The breakthrough integrates lasers directly on silicon chips, overcoming challenges posed by silicon's indirect bandgap.
Researchers created an efficient diode-pumped eye-safe laser using GdAl3 single crystals co-doped with Er and Yb. The laser emits safe wavelengths for human eyes and has advantages in telecoms due to low atmospheric losses.
A revolutionary new laser developed by the University of Adelaide can operate over a large range in the infrared light spectrum, allowing for sensitive detection of greenhouse gases. The laser's tunability and affordability make it a promising tool for scanning gases with high sensitivity.
Researchers at Lund University have developed a method to control the movement of active particles using light, which can be used to create programmable materials. This technology has potential applications in environmental science, such as locating oil spills, and medicine, including delivering pharmaceutical substances.
Astronomers have observed the inner portion of a protoplanetary disk surrounding HL Tau, with VLA images showing a distinct clump of dust containing roughly 3-8 times the mass of Earth. The region is thought to be where Earth-like planets would form.
Researchers at UMass Amherst and Oxford University describe a new law for predicting wrinkle wavelength on curved surfaces, enabling the use of wrinkles to sculpt surface topography. Experimental results support the validity of this local law, which incorporates mechanical and geometrical effects.
Researchers at Lomonosov Moscow State University successfully controlled ultrafast motion of electrons down to three attoseconds, breaking natural obstacles and observing quantum interference. The achievement opens a new horizon for studying ultrafast processes in physics.
Researchers at NC State University have developed an algorithm that can quickly and accurately reconstruct hyperspectral images using less data. This breakthrough enables faster imaging times and reduced memory requirements, making it suitable for applications such as security, defense, environmental monitoring, and agriculture.
Researchers at ETH Zurich developed a working group that created a tiny, ultra-efficient optical switch using silver atoms. This breakthrough has significant implications for data transmission and storage, as it enables the creation of digital signals with unprecedented accuracy.
Researchers have developed a new way to fully absorb electromagnetic radiation using an anisotropic crystal, hexagonal boron nitride. This breakthrough has significant implications for reducing radar visibility and improving applications in photovoltaics, sensing, nanochemistry, and photodynamic therapy.
A new technology allows for the creation of incandescent bulbs that can achieve efficiencies as high as 40 percent, outperforming current CFLs and LEDs. The breakthrough involves a two-stage process where waste heat is captured and re-emitted as visible light, resulting in a threefold improvement over traditional designs.
A Northwestern University team has developed a mid-infrared tunable laser integrated into an on-chip amplifier, demonstrating an order-of-magnitude increase in output power. The new technology allows for adjustable wavelength output, modulators, and amplifiers in a single package, enabling more efficient detection of hazardous chemicals.
The FORTIS sounding rocket will study the properties of galaxy NGC 1365, also known as the Great Barred Spiral Galaxy. Scientists aim to quantify how much material is flowing in and out of the galaxy by analyzing light emitted and absorbed by different types of hydrogen.
The OIST team developed an on-off switch with ultrathin optical fibers, using the quantum properties of rubidium atoms in the presence of different wavelengths of light. This proof-of-concept system could be used as a building block in a quantum network, enabling efficient data transfer and security.
Using a novel microscope that combines standard through-the-lens viewing with scatterfield imaging, NIST team accurately measures patterned features on a silicon wafer as small as 16 nanometers wide. The technique reveals variations in feature dimensions amounting to differences of a few atoms.
Researchers have developed a new hybrid structure that interacts strongly with electromagnetic radiation, enabling control over optical switches. The graphene-based material has the effect of focusing radiation into a smaller area than its wavelength.
Researchers have used a supercomputer to simulate plasma turbulence, finding that long and short wavelength turbulence coexist and interact strongly, increasing heat losses tenfold above standard models. This discovery may inform fusion reactor design and bring us closer to practical fusion energy.
Researchers at Duke University have developed a technology that brings true color to infrared imaging systems, capturing specific wavelengths from the visible to the infrared spectrum. This allows advanced thermal imaging systems to be produced faster and cheaper, with higher sensitivity.
Researchers demonstrated the fabrication of high-Q LN microresonators using femtosecond laser micromachining, achieving efficient second harmonic generation (SHG) in the visible wavelength range. The normalized conversion efficiency of SHG was measured to be 1.35×10-5 /mW.
Researchers at UCSB aim to develop large-scale millimeter wave wireless data networks that can operate at gigabit speeds. The new approach focuses on the millimeter wave band, which offers additional real estate on the electromagnetic spectrum and better efficiency due to its smaller coverage area.
Researchers developed a graphene broadband detector that reacts rapidly to incident light and works at room temperature. The device can synchronize laser pulses with high accuracy, enabling precise measurements at room temperature.
Square optical microresonators support whispering-gallery modes, suitable for unidirectional microlasers. Microsquare lasers offer better modulation behaviors and higher output power than microdisk lasers. Mode selection is achieved by adjusting the output waveguide width, enabling continuous tuning of lasing wavelength.
Researchers have successfully tuned lasers to manipulate atoms' interactions in a Bose-Einstein condensate, allowing for exotic states of matter. This breakthrough enables the exploration of unusual quantum phenomena and the engineering of novel quantum devices.
Researchers at UC Santa Cruz and Brigham Young University have developed a novel method for multiplex fluorescence detection on a small chip, enabling the rapid detection and identification of different flu virus subtypes. The technique uses wavelength division multiplexing to create distinctive signals in an optical waveguide.
A team of researchers has developed a unique source of coherent radiation for identifying and quantifying molecules in complex mixtures. The new laser can detect minimal amounts of disease markers present in exhaled breath, with the potential to diagnose potentially lethal diseases early.
Researchers at ETH Zurich developed a new type of acoustic imaging device that extracts contour information during measurement, creating detailed outline images of objects. The method uses evanescent waves and is useful for quickly recording relevant information about objects.
A new approach uses light to move mirrors, reducing the need for external controls in LIDAR and OCT devices. This could lead to compact and lightweight components suitable for smartphones or small UAVs.
Researchers created a miniature device combining optogenetics with wireless power delivery, enabling experiments involving free-moving mice. The breakthrough expands the scope of optogenetics research and offers new possibilities for studying social behavior and complex movements.
Scientists at HZDR and TU Dresden create compact camera that enables precise filming of dynamic processes at the nanometer scale. The instrument combines advantages of two methods, allowing high spatial and temporal resolution.
Researchers measured energy generated within space more precisely than ever before, discovering the Universe is slowly dying. The Galaxy and Mass Assembly project used seven powerful telescopes to observe 200,000 galaxies at 21 wavelengths.
A new portable ultra-broadband laser can sense chemicals for various applications, including security and medicine. The compact device emits light across a broad spectrum of frequencies, enabling real-time detection of chemicals.
Berkeley Lab researchers have generated and detected plasmons with one of the strongest confinement factors ever, confining photon energy to a spatial dimension smaller than its wavelength. This breakthrough enables novel plasmonic devices with extraordinary sub-wavelength confinement.
Scientists measured the absorption of different wavelengths of light in Venus' atmosphere, revealing clues about its composition and temperature. This research will help improve studies of exoplanets and future missions to Venus.
The researchers developed a novel ultra-compact heterogeneous wavelength tunable laser diode using silicon photonics and quantum-dot technology, achieving a wide-range tuning operation of around 1250 nm wavelength with an ultra-small device footprint. The obtained frequency tuning-range of 8.8 THz is a world record for QD and silicon p...
A novel X-ray lens designed by DESY scientists has been successfully tested, producing sharper and brighter images of the nano world. The lens employs a unique concept to redirect X-rays over a wide range of angles, enabling high convergence power and resolving smaller details.
Researchers at JQI have discovered special wavelengths, known as 'magic wavelengths', that can trap and excite Rydberg atoms without disturbing them. This breakthrough enables the creation of qubits and interaction of atoms in a useful regime.
Researchers at Northwestern University have created the world's first liquid nanoscale laser that can change colors in real time. The technology has significant advantages over traditional lasers, including simplicity, affordability and room-temperature operation.
A team of scientists using NASA's WISE observatory has found no evidence of advanced extraterrestrial life in 100,000 galaxies. The study searched for signs of highly advanced civilizations in mid-infrared wavelengths, a radiation detectable by the satellite.
Researchers used ESA's Herschel and Planck space observatories to identify objects in the distant Universe that could be precursors of today's galaxy clusters. These early galaxies were found to be forming stars at an extremely high rate, with some converting gas and dust into stars at a rate 1,500 times faster than our own Milky Way.
Astronomers have discovered an outburst from a young protostar called HOPS 383, revealing a sudden accumulation of gas and dust. The eruption is thought to be caused by instabilities in the disk around the protostar, leading to an extreme hot spot that heats up the surrounding material.
Scientists have made significant discoveries about the Sun's behavior in soft X-rays, shedding light on heating mechanisms and coronal composition. The study found that nanoflares, tiny explosions on the Sun, could be responsible for increased soft X-ray emissions, which also affects space weather events near Earth.
Researchers created a flexible, thin material that can change color by flexing it, offering possibilities for new display technologies and sensors. The material uses 'structural color' to reflect specific wavelengths of light, reflecting up to 83% of incoming light.
Researchers at Université de Genève discover that chameleons change colors through the active tuning of a lattice of nanocrystals in iridophores. This unique system allows for rapid shifts between efficient camouflage and spectacular display, while also providing passive thermal protection.
Researchers at Ghent University have developed mid-infrared frequency combs, which enable high-resolution spectroscopy for detecting gases. The combs' broad spectrum allows for fast and accurate analysis of molecular fingerprints, making them suitable for environmental monitoring and medical diagnostics.
Scientists at NIST have developed a new approach to measure X-ray angles with greater precision, reducing errors by three times. This improvement will enable better understanding of newly designed materials and their properties.
Researchers create an ultra-thin, completely flat optical component made of glass substrate and silicon antennas that compensates for wavelength differences. This allows for consistent effects like deflecting beams of different colors by the same angle or focusing those colors on a single spot.
Researchers at North Carolina State University have synthesized a new material that efficiently converts mid-IR light into oscillating electrons, enabling applications in high-speed computing, solar energy, and biomedical devices.
ORCA will study microscopic phytoplankton and their impact on the carbon cycle, measuring chlorophyll concentrations and distinguishing between types of phytoplankton. The instrument's hyperspectral capability offers a range of bands to refine ocean observations.
Scientists at Vienna University of Technology have developed a way to compress intense laser pulses by a factor of 20 using a cleverly designed hollow fibre. This tabletop technology makes creating short infrared pulses much simpler and cheaper than previously used setups.
The QCL LAB family of instruments features low noise drive electronics, allowing for stable center wavelength and narrow linewidth. Models are available with output currents up to 2000 mA, making them suitable for various applications such as remote detection of explosive materials and medical diagnosis.
A team of researchers created a photonic crystal nanolaser biosensor that can detect DNA and biomolecules based on wavelength shift and laser emission intensity changes. This method is simpler and potentially less expensive than existing techniques, making it a promising tool for disease diagnosis.
The FOXSI mission will observe high-energy X-rays from the Sun, helping scientists understand solar flares and the sun's atmosphere. By detecting these faint events, researchers aim to confirm the existence of nanoflares, which are thought to occur constantly but are difficult to detect.
University of Minnesota engineers have developed a novel device platform that generates and confines both sound wave and light wave on a computer chip. This technology has the potential to improve wireless communications systems using optical fibers and could be used for computation using quantum physics.
Researchers at Vienna University of Technology have developed a new laser system to create high-flux X-ray pulses, which will allow for more accurate measurements in various scientific fields. The new technology uses mid-infrared light and can produce up to 25 times higher X-ray flux than previous experiments.
Researchers detected a diffuse cosmic glow originating from stripped stars flung out into space after galaxies collided and merged. The findings suggest previously undetected stars permeate dark spaces between galaxies, forming an interconnected sea of stars.
Researchers discovered that open oceans are less efficient at emitting far-infrared energy than sea ice, leading to warmer oceans and melting sea ice. This phenomenon contributes significantly to the polar climate's warming trend, with simulations predicting a 2-degree Celsius increase in the Arctic climate after just 25 years.