Articles tagged with Ultraviolet Radiation
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Researchers have created a new kind of liquid scintillator by combining perovskite nanocrystals with organic molecules, enabling efficient X-ray detection and high-resolution imaging. The hybrid material outperforms conventional scintillators in terms of quantum yield and scintillation decay time.
Researchers have developed a simpler detection procedure to identify and purify specific proteins from complex mixtures. The new method uses a UV-excitable fluorophore that binds to polyhistidine tags, allowing for easy detection of tagged proteins in gel electrophoresis.
Researchers at Texas A&M University have developed a tiny photonic chip that can fit within the tip of a finger, enabling fast and accurate chemical characterization. The device is capable of detecting various molecules in a sample with a sensitivity 10 times higher than traditional Raman spectroscopy systems.
A team of scientists using NASA's Hubble Space Telescope has mapped the immense envelope of gas surrounding the Andromeda galaxy, our nearest large galactic neighbor. The study reveals a layered structure with two main shells of gas, and sheds light on the fuel for future star formation and outflows from supernovae.
QUT researchers develop a novel molecular coupling tool using green light and pH triggers, enabling catalyst-free chemical reactions. The tool has potential applications in drug delivery and 3D cell culture platforms, with the ability to control photoreactivity using varying pH levels.
Scientists at Nagoya University found that a thin top layer of azobenzene-containing plastic film needs to be light-sensitive to induce movement. The discovery could lead to cost reductions and revolutionize the material's use in various industries.
A new study led by University of Illinois astronomer Brian Fields explores the possibility that astronomical events were responsible for an extinction event 359 million years ago. Researchers found evidence suggesting long-lasting ozone-depletion, which could be caused by killer cosmic rays from nearby supernovae.
Researchers at Texas A&M University have developed a new image processing technique that enhances the resolution of low-quality electron micrographs using deep neural networks. The method leverages pairs of low- and high-resolution images to train AI algorithms, allowing for detailed analysis without damaging specimen samples.
Researchers sent perovskite and organic solar cells on a rocket into space, withstanding extreme conditions to produce power from direct sunlight and reflective light. The technology offers a promising solution for future space missions, as it is incredibly light and flexible, producing up to 14 milliwatts per square centimeter.
Researchers developed a 1cm by 1cm soft robot that can remove contaminants from water using a magnetic field and light. The artificial aquatic polyp can guide suspended targets towards it, and then activate its tentacles to grasp and release particles.
Researchers at EPFL have created a technology to amplify light inside hollow-core optical fibers filled with air, increasing the light intensity significantly. This breakthrough enables longer-distance transmission and potential applications in thermometers and temporary optical memory.
Researchers at Yokohama National University have developed a novel light-based reaction that yields high numbers of a key chemical component. The method uses green visible light to selectively reorganize chemical components, resulting in the production of multisubstituted cyclobutanes with high efficiency and cost-effectiveness.
Researchers at Tohoku University developed faster LED-based optical wireless technology using deep ultraviolet light, overcoming solar interference issues in traditional Li-Fi systems. The new LEDs enable quicker communication speeds and are suitable for use in 5G wireless networks.
Researchers found distinct responses to ultraviolet and other colors of light between day- and night-biting mosquito species. The study's findings have important implications for using light to control harmful insects.
A newly discovered CoO-TiO2 compound effectively stops listeria monocytogenes reproduction in both light and dark conditions, offering a potential solution for controlling bacterial contamination in food products.
Astronomers have spotted a spectacular UV flash accompanying a type Ia supernova, providing clues to understanding how white dwarfs explode and creating iron. The event may also shed light on dark energy and the universe's formation.
Researchers at Harvard SEAS create device that can shape near-field light into various forms using waveguide reflectors. The resulting shapes can be used for ultra-high-resolution microscopy, particle manipulation and sensing applications.
Researchers at the University of Tokyo have created a simple device to convert circularly polarized visible laser light into circularly polarized vacuum ultraviolet light, twisted in the opposite direction. This new method can be useful for researchers in medicine, life sciences, molecular chemistry and solid state physics.
Researchers have successfully developed a method to 'upconvert' low energy light into visible light using oxygen, enabling it to be captured by solar cells. This breakthrough has the potential to increase the efficiency of solar cells and expand their sensitivity range.
Scientists have developed a new class of light-powered, remotely controlled grippers grown on optical fibers. These micro-tools can change shape in response to light and are vital for various technologies. The researchers used liquid crystal elastomer technology to create the micro-grippers.
Researchers developed a tiny plastic robot that moves under the influence of light and magnetism, allowing it to attract and capture contaminant particles from the surrounding liquid or pick up and transport cells. The robot operates independently of the water composition, making it suitable for use in contaminated water.
Researchers monitored air temperature, humidity, and particulate matter pollution during the 2019-20 Australian bushfires. The study found specific combinations of air temperature and relative humidity led to higher pollutant accumulation, highlighting the importance of understanding microclimatic impacts on urban areas.
Researchers created a super white paint that reflects up to 98% of incoming solar radiation, potentially reducing indoor temperatures and air conditioner use by radiative cooling. The innovative paint formula replaces titanium oxide with barite and Teflon, offering improved reflectivity and reduced heat absorption.
Rice University engineers found that boron nitride can destroy 99% of PFOA in four hours through light activation, outperforming previously reported catalysts. The discovery suggests the potential for using boron nitride as a tool to address PFAS pollution.
Researchers at KAUST discovered that giant clam iridocytes absorb UV radiation and re-emit it as useful light for photosynthesis. This photoprotective effect enables clams to live in shallow tropical waters with high UV radiation levels.
Researchers at Columbia University Irving Medical Center found that far-UVC light can safely kill more than 99.9% of seasonal coronaviruses present in airborne droplets. Continuous exposure to far-UVC light could greatly reduce the level of airborne virus in indoor environments occupied by people.
Researchers have developed a new high-energy hollow fiber compressor beamline to generate intense attosecond harmonic radiation for nonlinear XUV spectroscopy studies. The system achieves 1.5-optical-cycle-long laser pulses with 1.2 terawatt peak power at kilohertz repetition rate, breaking a 10-year-old record.
Studies suggest ultraviolet light is an efficient method to prevent SARS-CoV-2 transmission in indoor spaces. By irradiating UV-C sources inside ventilation systems, airborne and surface-deposited viruses can be quickly deactivated, protecting millions of workers worldwide.
Researchers trained wild hummingbirds to discriminate between UV color combinations, revealing they can see up to five nonspectral colors. The study used a custom LED tube system and recorded over 6,000 feeder visits, showing birds can distinguish between various UV+color pairs.
Researchers at Texas A&M University have developed a 2D nanosheet that can adsorb near-infrared light and modify cell behavior. This discovery holds promise for controlling cellular functions using light, which could lead to new approaches in cancer treatment and regenerative medicine.
Scientists at University of Warsaw and ETH Zurich have synthesized active microparticles that self-propel in a fluid and reverse their direction based on wavelength. This breakthrough enables exploration of synthetic microswimmers with potential applications in diagnostics and medicine.
Researchers developed a thermoluminescent material that responds to UV radiation, overcoming current limitations in personal and environmental UV dosimetry. The new material enables accurate detection of UV exposure and has potential applications in various fields.
A team of researchers at Penn State has developed a handheld ultraviolet light device that can effectively disinfect areas by killing the novel coronavirus. The device uses high-performance UV LEDs emitting a high intensity of UV light, which is currently limited by transparent electrode materials.
Researchers at Colorado State University used riboflavin and UV light to eliminate a large amount of SARS-CoV-2 virus from plasma and whole-blood products, demonstrating its feasibility as a pathogen reduction technology.
Researchers discovered that a brief ozone layer collapse led to the extinction of plant and freshwater aquatic life 360 million years ago. This finding has profound implications for our warming world today, as Earth's temperatures may reach comparable levels, potentially triggering a similar event.
The study aims to develop optical radiation products used in large-scale sanitation processes and create a lamp with both germicidal and lighting elements. Researchers will test different wavelengths of ultraviolet light against coronaviruses like COVID-19.
The Penium margaritaceum genome provides insights into the origins of land plants by revealing footprints of adaptations for UV radiation protection and cell wall structure. The genome contains genes involved in regulatory systems, hormone signaling, and mucilage production, which are essential for structural support.
The UVA team collaborated with Peking University and Caltech to develop a broadest recorded microcomb spectral span, generating light in the ultraviolet to infrared spectrum. This achievement increases the usefulness of microcombs in spectroscopy, optical clocks, and astronomy calibration.
Researchers at North Carolina State University have discovered a polymer composite material with bismuth trioxide particles that can effectively shield against ionizing radiation while being lightweight and non-toxic.
Researchers developed an ultra-high resolution imaging technique using Extreme Ultraviolet radiation, producing extraordinary detail compared to traditional light microscope images. The method has the potential to aid the analysis of neurodegenerative diseases like Alzheimer's disease.
Researchers found that heating N95 masks preserves their filtration efficiency for 50 cycles of disinfection. Heating at 185 F for 20 minutes was the most effective method, while ultraviolet radiation allowed up to 20 cycles of disinfection but could be problematic.
A new study published in Journal of Functional Foods finds that daily BioCell Collagen ingestion reduces wrinkles, increases skin elasticity, and maintains hyaluronic acid content in humans. The supplement's unique matrix of hydrolyzed collagen type II peptides, chondroitin sulfate, and hyaluronic acid helps combat UVB-induced photoaging.
Researchers at NIST create a brick made of white flour mixed with fluorescent powder to visualize the spread of drug particles under UV light. They find that frequent glove changes, large-mouth vials, and two sets of wash bottles can minimize particle spread.
Chemists have developed a titanium catalyst that makes light usable for selective chemical reactions, producing highly selective products that can be used for antiviral drugs or luminescent dyes. The new catalyst uses green light to trigger reactions without destroying organic compounds.
Cornell University chemists have developed a new polymer that degrades by ultraviolet radiation, reducing persistent plastic accumulation in the environment. The material, isotactic polypropylene oxide, has mechanical properties comparable to commercial fishing gear and can break down on a realistic time scale.
Researchers at University of California - Santa Barbara develop ultraviolet LEDs that can decontaminate surfaces, floors, and HVAC systems. The technology has the potential to sanitize personal protective equipment, medical settings, and public spaces without causing burns or eye damage.
The James Webb Space Telescope will study three dense clouds, known as infrared-dark clouds, to understand the formation process of massive stars. These clouds are thought to be raw dough before baking, providing a unique window into the environment needed for star birth.
A hybrid material has been developed that can detect a broad range of light wavelengths, from ultraviolet to near infrared, due to its small bandgap. The material's electronic properties were investigated, revealing promising results for optoelectronic applications.
A Korean research team has developed a multi-functional luminescent film that can visualize near-infrared light through wavelength conversion, increasing its application range. The film's high efficiency enables the use of infrared or ultraviolet light for displays or imaging devices.
Researchers at Kobe University have demonstrated that 222nm UVC is safe for human skin and eyes, contrary to previous concerns about its carcinogenic effects. The study used xeroderma pigmentosum model mice to test the safety of repeated exposure to 222nm UVC, finding no adverse effects on their eyes or skin.
Researchers designed a polymer that can twist and bend in response to light, mimicking human muscle movement. The polymer's chiral structure changes direction when exposed to different light sources, enabling simultaneous bending and twisting motions.
A team of scientists and engineers from 10 universities created a web portal (N95decon.org) providing best practices for decontaminating and reusing N95 masks. The website synthesizes scientific literature on mask decontamination methods, including heat, UV-C light, and hydrogen peroxide vapors.
Scientists create a concept based on periodic phase transformation to compensate for phase mismatching in nonlinear crystals, enabling efficient conversion of ultraviolet to deep-ultraviolet wavelengths. The approach may revolutionize nonlinear and linear modulation in photonics.
A team of astronomers led by Nahum Arav has discovered the most energetic outflows ever witnessed in the universe, which tear across interstellar space like cosmic tsunamis. These quasar outflows accelerate material to breathtaking velocities, carrying hundreds of solar masses of material each year and pushing galaxies' formation forward.
A new study has found that the energy source behind mysterious ultraviolet radiation is likely star-forming galaxies, which are producing gigantic clouds of hydrogen gas that emit Lyman-alpha light. The study's findings suggest that infalling hydrogen gas originates in the intergalactic medium rather than the galaxy itself.
A new light-activated coating has been developed that successfully kills bacteria in low-intensity ambient light, including <em>Clostridioides difficile</em> and <em>Methicillin-resistant Staphylococcus aureus</em>. The coating works by producing hydrogen peroxide, a mild reagent used in contact lens cleaner solutions.
Researchers have identified a new fluorescent compound in scorpion exoskeletons that could help guard against parasitic infections. The compound, a phthalate ester, was found to have antifungal and anti-parasitic properties, suggesting a potential defense mechanism for scorpions.
Researchers at NIST have made the most sensitive measurements to date of silicon's conductivity using a novel method that allows them to test relatively thick specimens. The new technique has the potential to improve semiconductor materials and their applications, including solar cells and next-generation high-speed cellular networks.
Scientists at Tokyo Institute of Technology have created a visible-light photoelectrochemical system using cobalt-enhanced TiO2. The process enables efficient water oxidation, producing hydrogen as a clean alternative fuel. Cobalt domains on the surface enhance light absorption and catalytic sites facilitate water oxidation.
A team developed new hydrogen evolution photocatalysts (HEPs) made from two semiconducting materials, enhancing energy storage. The HEPs absorb more visible light, increasing hydrogen production rates an order of magnitude beyond current single-component inorganic HEPs.