Articles tagged with Light Emitting Diodes
Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.
Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.
Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.
Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.
Practical application of scientific knowledge and engineering principles to solve real-world problems and develop innovative technologies. Encompasses all engineering disciplines, technology development, computer science, artificial intelligence, environmental sciences, agriculture, materials applications, energy systems, and industrial innovation. Bridges theoretical research with tangible solutions for infrastructure, manufacturing, computing, communications, transportation, construction, sustainable development, and emerging technologies that advance human capabilities, improve quality of life, and address societal challenges through scientific innovation and technological progress.
Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.
Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.
Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.
Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.
Researchers have developed layered 2D hybrid perovskites with nanometer thickness, improving optoelectronic performance for efficient devices. The discovery of layer-edge-states at the edges of perovskite layers enables uninhibited charge transport and enhances photovoltaic and light-emitting properties.
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.
A novel non-pharmacological approach using green LED has shown promising results in treating neuropathic pain in rats with no side effects observed. The therapy may work by increasing levels of endogenous opioids, which inhibit pain and decrease inflammation.
Researchers at Osaka University create tri-color changing materials that exhibit efficient thermally activated delayed fluorescence and enable the production of high-performance OLEDs devices. The materials display a range of colors in response to temperature and pressure, showing promise for applications such as pressure- and temperat...
Researchers developed dual-function nanorod LEDs that can emit, detect, and respond to light. These LEDs can be used in display arrays that adjust brightness based on ambient light conditions and recognize objects through touchless gestures or laser stylus input.
Scientists successfully demonstrate circularly polarized electroluminescence from spin-polarized LEDs at room temperature, without external magnetic fields. The discovery opens up new avenues for spintronics and potential applications in secure optical communications, cancer diagnosis, and optically enhanced nuclei imaging.
New research suggests that LED street lighting can have a major impact on wildlife, but that adjusting the lighting schedule and dimming it by 50% can reduce its effects. The study found that changing the way we light at night could have profound consequences for species such as predatory spiders and beetles.
Researchers at Eindhoven University of Technology have developed a nano-LED that is 1000 times more efficient than predecessors, enabling gigabits per second data speeds. The new light source has the potential to take the brake off data traffic growth on chips.
A team of scientists has designed a new display made from natural elements, including luminescent proteins. This technology enables the creation of energy-efficient Bio-displays with low production costs and high image quality, offering an ecological solution to traditional displays' limitations.
Researchers at Princeton University have developed a technique to create ultra-fine grained films using self-assembling nanoparticles, leading to more efficient and stable perovskite-based LEDs. This advancement brings perovskite technologies closer to commercialization and could speed the adoption of lower-cost and environmentally fri...
Research from Kyushu University found that even small amounts of impurities in the vacuum chamber can significantly impact OLED lifetime. The study analyzed environmental conditions and detected a correlation between shorter deposition times and increased degradation rates.
Researchers at Virginia Tech have found that new LED lighting in milk display cases can enhance the taste of milk, improving its sweet and rich flavors. The study also highlights the importance of protecting nutrients like riboflavin from light exposure to maintain milk's nutritional value.
A recent study by researchers at the University of Bristol found that LED lights are less attractive to nuisance insects compared to traditional filament lamps. The study, funded by the Natural Environment Research Council and Integral LED, used customised traps at 18 field test sites across south-west England.
Researchers at Ohio State University have developed lightweight, flexible metal foil-based LEDs for portable ultraviolet light purification of drinking water and sterilization of medical equipment. This technology has the potential to make safe drinking water accessible in remote areas.
Researchers at UCSB found that trace metals like iron can act as nonradiative recombination centers in gallium nitride semiconductors, reducing LED efficiency. The study highlights the importance of controlling growth and processing to prevent metal impurities from affecting device performance.
Researchers found that ground beef color fades quickly due to light exposure, but LED lights can slow down this process. The study showed that LED lighting retained a better red color on day 5 compared to fluorescent lighting.
Researchers at Lehigh University found gallium nitride has a wear rate approaching that of diamonds, making it suitable for touch screens, space vehicles and RF MEMS. The material's tribological properties have been studied extensively but virtually no studies were done on its resistance to mechanical wear.
A 12-month LED street lighting trial in Brisbane, Ipswich, and Townsville found power savings of up to 82% compared to traditional High Intensity Discharge (HID) lights. The trial also demonstrated significant energy savings of up to 60% when combined with smart lighting control.
Researchers at Chalmers University of Technology have developed a new electronic 'paper' that is bendable and gives all the colors of a standard LED display. The material requires significantly less energy than a Kindle tablet, making it suitable for well-lit places such as outdoor displays.
Researchers have designed metal-free phosphorescent molecules that glow persistently at room temperature, overcoming challenges of organic compounds emitting light only at low temperatures. The molecules can be tuned to emit different colors and are potentially three times more efficient than fluorescent LEDs.
Researchers have directly observed negative refraction for electrons passing across a boundary in graphene, mimicking light behavior. This finding could lead to the development of new types of electron switches and enable new experimental probes, such as on-chip electron microscopes.
A team of scientists from the University of Vermont and Dartmouth College have discovered a new way that some molecules can make a luminescent glow, breaking Kasha's Rule. The newly discovered pathway to creating light may prove useful in industrial materials, LEDs, and biomedical imaging.
A study by Ohio State University researchers found that taller individuals have a natural advantage when it comes to spatial relations and judging the location of targets in their middle-distance vision. This ability is particularly important in situations with limited visual cues, such as darkness or obstacles.
Researchers have developed a more cost-effective and environmentally friendly white LED using graphene and a strontium-based metal-organic framework material. The new technology could save nearly 348 terawatt-hours of energy by 2027, equivalent to the annual output of 44 power plants.
Researchers found that end-of-day far-red and blue light treatment alleviate intumescence injury in tomato seedlings. High blue photon flux ratio during the photoperiod also mitigates intumescence injury, with a synergistic effect observed when combined with EOD-FR light.
KAUST researchers develop a nanocrystalline material that rapidly converts blue light into white light, enabling data speeds of up to 2 GB/s. This innovation has the potential to replace traditional LEDs for energy-efficient lighting and enable new applications like VLC.
A new method for making green LEDs has been developed by researchers at the University of Illinois, enhancing their efficiency and brightness. By creating gallium nitride (GaN) cubic crystals grown on a silicon substrate, the team has achieved powerful green light emission for advanced solid-state lighting.
A study on sole-source LEDs found that increasing light intensity and quality negatively impacts nutrient content in Brassica microgreens. Growers can use the data to select beneficial lighting practices.
The rise of OLED displays could lead to shatterproof phones. Researchers are working to overcome challenges such as image retention and high costs, but if successful, the technology could vastly improve image quality and open up new possibilities for electronics design.
Researchers at The Australian National University have improved the performance of tiny lasers by adding impurities, increasing light emission efficiency. The discovery could lead to development of low-cost biomedical sensors, quantum computing, and a faster internet.
A new thermally activated delayed fluorescence (TADF) material has been developed, displaying emission of light in colors from green to deep-red through intersystem crossing. This breakthrough contributes to the development of inexpensive and highly efficient OLEDs.
Researchers have demonstrated that consumer-grade LED bulbs can be modified to serve as both light sources and receivers of signals, enabling the creation of a network of devices in a room. This technology has potential benefits for interconnecting IoT devices without threatening the scarce radio spectrum.
University of Utah researchers have developed a theory that adding light during the manufacturing process can reduce defects in semiconductors, leading to more efficient solar cells and brighter LED bulbs. This breakthrough could unlock the potential of materials previously deemed unusable, such as cadmium telluride and gallium nitride.
Exposure to LED light for just four hours can make milk taste like cardboard, while older milk remains at high quality for two weeks when shielded from LED exposure. Consumers overwhelmingly prefer older, fresh-looking milk over newer, LED-exposed milk.
Under certain conditions, electric eels attack by raising up out of the water and delivering a series of powerful electrical shocks, effectively deterring predators. This behavior is believed to provide the eels with an evolutionary advantage in defending their territory.
Researchers at MIT have discovered a process to remove defects in new solar cell materials using intense light, improving their efficiency and consistency. The technique, called photo-induced cleaning, uses illumination to migrate ions that sweep away most of the defects in the material.
Researchers developed a compact, high-powered magnet to generate strong magnetic fields for cyclotron resonance experiments. This breakthrough enables routine measurements on a tabletop in a laboratory environment, facilitating rapid progress in semiconductor device development.
Continuous LED light significantly decreases nitrate content in preharvest lettuce, increasing nutrient contents. Researchers found that RB LED light was more effective than white LED light in facilitating lettuce growth, leading to enhanced free-radical scavenging activity and increased phenolic compound concentrations.
A study by researchers found that continuous spectrum LED lamps, specifically designed for horticultural use, outperform conventional white LEDs in terms of plant response and energy efficiency. The results showed a 26% increase in energy efficiency and significant increases in vegetative growth when light intensity was increased.
A biofeedback system has been developed to control photosynthetic lighting in controlled environment agriculture, allowing for efficient use of light by plants. The system successfully adjusted light levels based on the physiological performance of plants, achieving a wide range of energy conversion rates and reducing energy costs.
Researchers at Kyung Hee University propose a model to recycle lithium ion batteries into energy storage units for solar-powered LED lamps, reducing e-waste and providing job opportunities. The system can light up a room for about five hours each day, lasting approximately three years without maintenance.
Scientists develop hybrid quantum dot/tin disulfide material that enhances light-harvesting properties and boosts photocurrent response, paving the way for improved solar cells and photodetectors. The research demonstrates promise for designing better energy-conversion materials.
Researchers have developed a new way of attaching electronic screens to paper-based packaging, enabling the display of simple messages and potentially complex developments like countdown timers. The technology could transform the packaging industry by providing innovative ways for companies to communicate brand awareness.
Researchers at UCSB have identified specific defects in LED diodes that result in reduced efficiency, but not all defects are alike. The characterization of these point defects could lead to the fabrication of even more efficient and longer-lasting LED lighting.
Researchers at Michigan State University created a lighter, cheaper moth trap using LED lights and everyday materials. The new trap is effective but less abundant in insect capture compared to traditional mercury vapor black light traps.
Scientists have discovered that hybrid lead halide perovskites can recycle light, a finding that could lead to large gains in solar cell efficiency. This process creates a concentration effect inside the cell, enhancing energy efficiency and potentially reaching efficiencies well beyond current silicon-based cells.
Conservation biologists at the University of Exeter found that attaching green LED lights to gillnets reduced sea turtle deaths by 64%, without affecting fish catch, in a small-scale Peruvian fishery. The study showed that the cost of saving one turtle was £24, making it a cost-effective solution.
The University of Bath has installed a new Nano-Lithography printing system, enabling the development of advanced manufacturing techniques for nano-engineered semiconductors. The system will accelerate research into high-efficiency LEDs and improve the quality of these materials.
A new study by University of Illinois engineers found that the transistor laser device can switch faster than traditional technologies due to photon-assisted tunneling, enabling ultra-high-speed signal modulation. The technology has the potential to revolutionize big data transfer and computing.
Researchers at Kyushu University developed a modification to increase the lifetime of organic light-emitting diodes (OLEDs) by nearly 8 times, making them more suitable for practical applications. The modification involves adding thin layers of a lithium-containing molecule, reducing degradation and increasing efficiency.
Researchers at Syracuse University have developed a new energy transfer system that combines nanomaterials and biomaterials to produce bioluminescence. The system, demonstrated in ACS Nano, has high-efficient energy transfer between semiconductor quantum rods and luciferase enzymes.
Scientists at Kyushu University developed a strategy to widely vary the emission color and efficiency of organic light-emitting diodes based on exciplexes by changing the distance between key molecules. This technique could lead to new kinds of electronic devices with switching behavior or light emission that reacts to external factors.
Researchers at the University of Massachusetts Amherst have identified a new molecular property that could lead to more efficient and cost-effective materials for cell phone and laptop displays. The property, directional intrinsic charge separation, was found in crystalline nanowires of an organic semiconductor molecule known as TAT.
Researchers found that exposure to structured environments increases thoughtful decision-making, leading to better choices. This effect is particularly pronounced in chaotic environments where people invest less thought into their decisions.
The Molecular Spectroscopy Group has created new multifunctional materials that mimic the photosynthetic organisms of plants. These materials capture a broad spectral range of light and convert it into chemical energy. They have been applied in various photonic applications, including tunable lasers and light modulators.
Researchers at Lehigh University and international collaborators found that small quantities of oxygen are needed to enhance the optical properties of Eu-doped GaN devices. The study utilized native oxygen in Eu(RE)-doped GaN for enabling device compatibility in optoelectronic applications.
Scientists have discovered a way to create BioLEDs using luminescent proteins in rubber, producing white light at a lower cost and with greater stability than traditional LEDs. The technology has the potential to replace expensive and scarce materials used in white LEDs.
Researchers from KIT and CYNORA directly measured the speed of intersystem crossing in a copper complex, improving the understanding of TADF mechanisms. This leads to enhanced energy efficiency in organic light-emitting diodes (OLEDs), with potential applications in display technology.
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 study by Purdue University researchers found that LED lighting did not negatively affect greenhouse tomato fruit quality and demonstrated a potential alternative to overhead HPS supplementation. Physicochemical measurements showed slight variation among fruits grown under different lighting regimes.