Articles tagged with Visible Light
Researchers at Waseda University demonstrate a novel zirconocene-catalyzed epoxide ring-opening reaction under visible light, expanding the reaction scope and regioselectivity. The approach enables accessible synthesis of elusive alcohol products with improved efficiency and environmental sustainability.
Researchers have designed a lightweight wood-based foam that reflects sunlight, emits absorbed heat, and is thermally insulating. The material could reduce buildings' cooling energy needs by an average of 35.4% depending on weather conditions, making it a promising solution for hot climates.
Researchers developed a light-controllable time-domain digital coding metasurface that can manipulate microwave reflection spectra by time-varying light signals. The metasurface platform produces harmonics based on phase modulation, generating symmetrical harmonics and white-noiselike spectra.
Researchers developed micro-sized machines utilizing swarming strategy for cargo delivery, outperforming single robots with efficiency of up to five times. The team created a swarm of cooperating robots that can divide workload and respond to risks, expanding potential uses for microrobots.
Researchers developed a solid-state photocatalyst using TiO2 and CuO nanoclusters to inactivate various variants of SARS-CoV-2. The material is effective under both darkness and indoor light, making it suitable for reducing COVID-19 infection risk in indoor environments.
New research found that 62% of tinted sunscreens have only one shade option, with tone compatibility being the most important criterion. The study suggests that the beauty industry and dermatologic field need to improve diversity and offer more options for tinted sunscreen formulations tailored to people with skin of color.
Research at Clemson University reveals that flowers use UV-absorbing chemicals to create a 'bulls-eye' effect for pollinating insects, aiding survival. Plants adapt to different environments by producing varying amounts of UV-blocking or absorbing chemicals.
Researchers are developing a new SWIR surgical microscope system to detect and remove cholesteatomas, a type of chronic otitis media. The microscope uses short-wave infrared light to illuminate blood, bacterial biofilms, cartilage, and soft tissue, making them distinguishable from each other.
Researchers have demonstrated control of graphene's relaxation time, allowing for novel functionalities in devices such as light detectors and modulators. This work paves the way for the development of ultrafast optical devices with potential applications in photonics and telecommunications.
Scientists at Nanyang Technological University, Singapore, have developed a durable coating that prevents fogging and 'self-cleans' under sunlight exposure. The coating shows excellent adherence to the plastic surface and maintains durability in tests, offering an attractive long-term solution for various applications.
Researchers have developed a method to detect tiny plastic scraps on remote beaches using satellite technology. This innovation enables the tracking of plastics within satellite images, allowing for more frequent and reliable observations.
Research reveals organic aggregates can emit polychromic and white light with high efficiency, opening up new avenues for OLEDs and encryption. However, more work is needed to fully understand the underlying mechanisms and improve performance.
Researchers developed a molecular device that converts infrared light to visible light, expanding detection capabilities. The device uses tiny vibrating molecules and metallic nanostructures to enhance conversion efficiency.
Researchers at the University of Cambridge have developed a new concept for detecting infrared light by converting it into visible light, easily detectable by modern cameras. This innovation enables the detection of mid-infrared light using molecular frequency upconversion with dual-wavelength hybrid nanoantennas.
Researchers from OIST and Kyushu University have developed a method to generate a glow-in-the-dark light using organic materials. The new method produces emissions that last for over one hour at room temperature, improving performance by tenfold compared to previous work.
Researchers at Columbia University have developed a compact and power-efficient phase modulator that can control the phase of visible light waves. This breakthrough enables large-scale integration of devices for applications such as chip-scale LIDAR, AR/VR goggles, and quantum information processing chips.
A research team discovered a quantum confinement effect in a 3D-ordered macroporous structure of BiVO4, enabling hydrogen production under visible light. The study found that the 3DOM structure had higher photocatalysis efficiency and produced more oxygen than its plate-like counterpart.
Scientists at NTU Singapore develop a new electrochromic window material that can block up to 70% of infrared radiation while allowing 90% of visible light to pass through. The material is designed to be energy-efficient and durable, with improved performance compared to existing technologies.
A research team led by Professor Luca Razzari at INRS has successfully generated coherent, intense visible light pulses with femtosecond duration using a simplified setup. This innovation opens up new possibilities for studying various phenomena in physics, chemistry, and biology.
SMART researchers have discovered a practical method to overcome current challenges in the manufacture of indium gallium nitride (InGaN) LEDs with considerably higher indium concentration. The new approach uses intrinsic defects in semiconducting materials to form quantum dots that emit long-wavelength light.
A new instrument at the Advanced Light Source enables simultaneous measurement of crystal structure and optical properties during perovskite synthesis. This allows for real-time monitoring of material quality and performance, leading to potentially more efficient solar cells.
Researchers at the University of Bonn developed a method to visualize laser beams in a vacuum, allowing for precise alignment of individual atoms. This breakthrough enables faster and more accurate quantum optics experiments, potentially leading to advancements in computing and materials science.
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.
Using nearly a decade of satellite data, researchers at CSU have detected the elusive ‘milky seas’ – a rare display of bioluminescence in the ocean. The study reveals that milky seas are not adequately explained by previous hypotheses and proposes new theories for their formation.
Researchers developed a transparent radiative cooler that transmits visible light while reflecting near-infrared light, radiating heat in the atmospheric window. The material lowered interior temperatures by up to 14.4°C and exterior temperatures by 10.1°C in outdoor experiments.
Researchers at Yale-NUS College have discovered a way to produce single gyroid photonic crystals directly in feather colours of blue-winged leafbirds. This breakthrough has the potential to improve photovoltaic cells, fibre optics, and fuel cells by making them more efficient and cost-effective.
A University of Houston research team creates a unique class of luminescent materials called phosphors that absorb violet LED's single-color emission and convert the light to cover the majority of the visible spectrum. The new LED bulb emits less blue light, reducing health concerns associated with overexposure.
A team of researchers at the University of Ottawa has developed a new pathway to transform CO2 gas into solid carbon forms that emit light, creating a low-energy alternative. The breakthrough uses visible light to initiate dissociation in carbon dioxide molecules on a nanostructured silver surface.
A research team at Pohang University of Science & Technology has developed ultra-high refractive index lenses using visibly transparent amorphous silicon. The new material allows for the control of all visible light colors, enabling more efficient and cost-effective virtual and augmented reality devices.
Researchers developed a novel spectroelectrochemical cell to study electrolyte behavior, improve fuel cell performance, and analyze catalyst efficiency. The device can perform in situ infrared spectroscopy, Raman spectroscopy, and X-ray absorption/diffraction analysis.
Researchers at Kyushu University have developed a new material system that can directly convert visible light into ultraviolet light with an efficiency of up to 20.5%, doubling previous records. The system is promising for harnessing ambient light to drive applications requiring high-energy ultraviolet light.
Researchers develop novel design and fabrication techniques for rainbow light trapping, enabling extreme light confinement and versatile application in low concentration molecular sensing, enhanced photocatalysis, and super-resolution optics. The technique uses analytical modeling to optimize groove geometry for broadband electromagnet...
A new method for detecting bacteria and infections has been developed using fluorescent nanosensors. These sensors can track down pathogens faster and more easily than traditional methods, allowing for improved patient care and rapid diagnosis of sepsis.
Researchers at FAU have developed a light-controlled molecular motor that can control catalysis reactions. The system uses visible light to trigger the release and bonding of catalysts, accelerating or decelerating desired chemical reactions.
Scientists have developed a simple method to comprehensively assess spectrometer performance within seconds using only incoherent excess noise. This approach enables high-quality visible light OCT imaging with improved spectral resolution uniformity, revealing new insights into the mouse photoreceptor layer.
Post-tropical cyclone Teddy was located near latitude 51.0 degrees north and longitude 57.3 degrees west, with maximum sustained winds of 50 mph and a central pressure of 975 millibars. The storm moved closer to the northwestern Newfoundland coast overnight before merging with an extratropical low-pressure area.
A new study published in Epidemiology found that night-time exposure to outdoor artificial light, especially blue light, may increase the risk of colorectal cancer. The research analyzed data from over 2,000 adults and found a 60% higher risk of developing colorectal cancer among those with the highest exposures to blue light.
A new method detects MIR images using Si cameras through non-degenerate two-photon absorption, enabling simple and efficient imaging. The approach avoids alignment artifacts and utilizes the nonlinear optical properties of the Si chip itself to trigger photo-induced charge carriers.
Researchers at Newcastle University have developed a new type of organic LED that enables faster data transfer speeds, reaching 2.2 Mb/s. This breakthrough could enable the integration of portable and wearable organic biosensors into visible light communication links.
Researchers have developed a visible-wavelength passively mode-locked all-fibre laser, generating picosecond pulses at 635 nm. The laser has a tunable duration and a narrow spectral bandwidth, opening up new possibilities for applications in optical communications, biomedicine, material processing, and scientific research.
Researchers developed a unique film-based photosensitizer that efficiently produces singlet oxygen with enhanced photochemical stability and visible light absorption, paving the way for practical applications in sterilization, water purification, and PDT.
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.
Scientists at Chiba University have discovered a previously overlooked electronic transition 'S0 → Tn' in heavy-atom-containing molecules exposed to visible light. The study reveals that this mechanism promotes radical reactions in photoreactions with visible light, which was not previously considered a main role.
Researchers demonstrate a method to modulate magnetic information using visible light, reducing magnetization in a ferromagnetic film. This technique could enable rapid digital storage and retrieval using room temperature illumination.
A new 3D printing technique harnesses the power of visible light to create 'living' 4D materials with controlled polymerisation, enabling objects to transform their shape in response to conditions. The technology has numerous potential applications, including recycling and biomedical uses.
Researchers at Istituto Italiano di Tecnologia have developed a new technique called Optoceutics, which uses visible light to specifically direct the fate of tissue cells. This breakthrough has significant potential for regenerative medicine and treating cardiovascular diseases.
Researchers at Rice University have discovered a simple method to turn fluorescent tags on and off with visible light by switching one atom. This technique will enable high-resolution imaging and dynamic tracking of biological processes in living cells, tissues, and animals.
Researchers at Kanazawa University have identified catalysts that facilitate the photolysis of cyclopropenones under visible-light conditions. This novel method yields highly reactive alkynes without UV light dependence, making it a valuable alternative for industrial applications.
The ENLIGHT'EM project is developing a new discipline in Low-energy Visible Light IoT Systems, integrating VLC and networked embedded systems. Researchers will be trained to spearhead the development of sustainable IoT networks, with potential applications in connected energy, light, living, and cities.
Engineers at the University of California, Riverside, have developed a new technology that tunnels light into the quantum realm with unprecedented efficiency. The device integrates a glass optical fiber with a silver nanowire condenser to squeeze visible light to the tip of the condenser and interact with molecules locally.
Scientists have developed an inexpensive and environmentally friendly way to produce artificial nacre, a tough material found in mother-of-pearl, using bacteria. The novel material has the same mechanical properties as natural nacre and can be bendable, making it suitable for medical applications and construction.
Xia Zhou, an associate professor of computer science at Dartmouth College, has been awarded the 2019 ACM SIGMOBILE RockStar award for her groundbreaking research on unconventional wireless spectrum frequencies and visible light sensing. Her work has led to breakthroughs in next-generation wireless systems and human behavioral sensing.
Scientists have developed a nanotechnology that enables mice to see infrared light, opening the door for potential applications in civilian encryption, security, and military operations. The technology involves injecting nanoparticles into the mouse's eyes, which capture infrared wavelengths and emit shorter visible light wavelengths.
Researchers at UMass Medical School have developed a technology that allows mammals to see infrared light using nanoantennae injections. The temporary vision enhancement enables animals to perceive near-infrared patterns and shapes without interfering with their visible light ability.
Researchers at Columbia University have developed a chemical process to convert infrared light to visible energy, allowing innocuous radiation to penetrate living tissue without damaging it. This technology holds promise for enhancing the effectiveness of photodynamic therapy in treating various diseases.
Astronomers have discovered a young star, Gaia 17bpi, undergoing a rare 'growth spurt' - a FU Ori stellar outburst. The event reveals insights into the development of these distant stellar objects and helps solve longstanding mysteries surrounding star formation.
A new study has discovered a promising approach to significantly lower doses of X-rays in 3D medical imaging, making it cheaper and safer. The technique, known as ghost imaging, uses a sensor instead of an X-ray camera to create 3D images.
Researchers from Osaka City University found a single kind of opsin in a photoreceptor cell achieves UV and visible light discrimination in the fish pineal organ. This discovery challenges the long-held belief that multiple kinds of color opsins are required for color detection.
Tropical Cyclone Luban is moving slowly towards Oman, expected to make landfall as a tropical storm before Oct. 14. The cyclone has strong winds and a ragged eye, but lacks thunderstorm development.
Hurricane Leslie has a ragged banding eye surrounded by a central dense overcast. The storm is accelerating east-northeastward, moving into a stable environment where it will weaken over cooler waters.