Articles tagged with Infrared Radiation
Scientists created a room-temperature, zero-power infrared sensor with high sensitivity and fast response time. The device uses a novel asymmetric electrode structure to separate generated electrical charges, enabling clear images without external power.
Researchers at Stanford University have developed a promising approach to using well-studied semiconductors to improve infrared light-emitting diodes and sensors. The new technology has the potential to lead to smaller, sleeker, and less expensive infrared devices with improved defect tolerance.
Researchers develop a rigid organic crystal that emits red light under UV irradiation through excimer formation and generates green light through second harmonic generation under near-infrared exposure. The dual-mode optical behavior operates independently within the same crystal without interference.
Researchers have created a method for simultaneous imaging of DNA and RNA in living cells using harmless infrared light, allowing for high-precision detection of all stages of cell death. This breakthrough enables the early detection of cellular damage that leads to aging or death.
Researchers at the University of Turku developed a groundbreaking organic infrared photodiode with record-level sensitivity, addressing limitations of current devices. The new technology uses polaritons to achieve narrowband detection with high responsivity, ultrafast response, and exceptional thinness.
Researchers found that heat transfer values increase dramatically at distances less than ten nanometres, exceeding theoretical predictions by a factor of one hundred. This phenomenon challenges current understanding of heat transfer in the nanometre range.
Researchers discovered a new way to enhance light emission in nanoparticles, leading to the visualization of infrared radiation. The technique, which involves simultaneous excitation with two near-infrared beams, could have applications in microscopy and photonic technologies.
Scientists have created nanoparticles that convert near-infrared radiation into blue or UV light, enabling efficient powering of molecular motors. This breakthrough solves a significant problem in real-life applications, allowing bulk materials to respond or act as molecular switches in biological settings.
Researchers at ICFO have created a single photon detection system that can operate in the mid-infrared range at relatively high temperatures. The system uses twisted 2D materials to detect long-wavelength single photons and exhibits bistability, allowing for extreme sensitivity to illumination.
A team of researchers from UC3M, MIT and Adobe have developed Imprinto, a system for embedding invisible digital information in printed documents. This technology uses infrared ink and a special camera to enable advanced interaction with physical documents without altering their visual appearance.
Researchers have developed thin films that can compress infrared light, improving its propagation distance and wavelength range. The technology has potential applications in thermal management, molecular sensing, and photonics.
Researchers at URV develop system to monitor oxidation of hazelnuts using hyperspectral camera, confirming atmosphere and light exposure as main causes of oxidation. The method allows for quality standards to be set and improves packaging techniques.
MIT engineers developed ultrathin electronic films that sense heat and other signals, reducing the bulk of conventional goggles and scopes. The new pyroelectric thin film is highly sensitive to heat and radiation across the far-infrared spectrum, enabling lighter, more portable night-vision eyewear.
Researchers at MIT engineered bacteria to produce unique wavelengths of light that can be detected using hyperspectral cameras. This technology could enable the development of bacterial sensors for agricultural applications, such as monitoring crop health and detecting pollutants.
Researchers have created a flexible and tunable infrared stealth technology by adjusting the phase change material GST in different states. The metafilm achieves effective infrared stealth functionality in certain atmospheric window bands and excellent radiative heat dissipation capabilities in others.
Scientists have created a new method to create silver telluride colloidal quantum dots that overcome challenges of high dark current, limited linear dynamic range, and response speed. The team developed the first proof-of-concept SWIR LIDAR using these non-toxic materials, measuring distances over 10 meters with decimetre resolution.
The device enables precise control over terahertz wave polarization, revolutionizing applications such as data transmission, imaging, and sensing. This innovation promises to transform fields like wireless communication and biomedical imaging.
Scientists at KAUST developed a new nanoplastic mulch that cools greenhouses by 25 degrees Celsius, increasing Chinese cabbage crop yields by nearly 200%. The biodegradable mulch reduces microplastic waste and energy consumption in hot cities.
Researchers at the University of Turku found that nanocellulose dyed with red onion skin extract provides very effective UV protection for solar cells. The film protected 99.9% of UV radiation up to 400 nanometres and maintained its performance throughout a long testing period.
Scientists at Helmholtz-Zentrum Dresden-Rossendorf have developed a new method to determine the magnetic orientation of a material using terahertz light pulses. This technique enables reading out magnetic structures within picoseconds, opening up possibilities for ultrafast data storage and processing.
Scientists at the University of Birmingham warn that increasing CO2 levels could lead to a decrease in 'space sustainability' due to changes in the Earth's upper atmosphere. The research suggests that as the atmosphere cools, it contracts, reducing satellite density and potentially increasing the risk of collisions.
Researchers have set new limits on the lifetime of dark matter particles using a combination of models and state-of-the-art observations. The findings highlight the utility of their technology, setting an upper bound of ten to a hundred million times the age of the universe for the frequency of dark matter decay events.
Researchers developed new photon avalanching nanoparticles that exhibit high nonlinearities, overcoming challenges in realizing intrinsic optical bistability at the nanoscale. The breakthrough paves the way for fabricating optical memory and transistors on a nanometer scale comparable to current microelectronics.
Researchers from Indian Institute of Technology developed bifacial perovskite solar cells with a novel NiO/Ag/NiO transparent electrode, achieving high efficiency, durability, and infrared transparency. The cells demonstrated impressive power conversion efficiencies and high bifaciality factors.
Researchers from Tokyo Metropolitan University developed a new dye that strongly absorbs second near-IR radiation, transforming it to heat. This breakthrough enables clearer imaging and better delivery of heat for therapies in deep tissue medicine.
Researchers at Chung-Ang University have developed a novel hydrovoltaic device that can produce up to a few tens of microwatts and responds quickly to evaporation-driven changes in water flow, making it suitable for fire detection. The device also exhibits excellent stability over extended periods.
Researchers developed high-sensitivity and low-noise infrared superconducting nanowire single-photon detectors, achieving sub-mK temperature resolution. The detectors used photon counting technology, overcoming limitations of conventional semiconductor detectors.
A new smart window technology combines liquid crystals with nanoporous microparticles and a patterned vanadium dioxide layer to simultaneously control visible light and infrared radiation. The device offers fast, efficient heat and visibility management, marking a significant step forward in energy-efficient building design.
Researchers at Aalto University developed a new type of infrared photodiode that is 35% more responsive at 1.55 µm than existing germanium-based components. The new device can be manufactured using current production techniques, making it highly practical for adoption in various technologies.
Researchers have proposed a novel strategy utilizing ICT between D-A molecules to enhance IR photodetection. The approach leads to elevated EQE in the polaron absorption region and strong low-energy subgap absorptions, offering a pathway to high-performance next-generation IR photodetectors.
A new study using the James Webb Space Telescope has reevaluated the atmospheric composition of Trappist-1 b, finding conditions that could support a thick CO2-rich atmosphere. Researchers propose that haze from hydrocarbon compounds in the upper atmosphere may explain this scenario.
Researchers have discovered a highly electrically conductive material with low thermal conductivity, challenging the link between electrical and heat conduction. This finding could lead to new developments in building materials, performance apparel and energy storage solutions.
A study found that monochromatic infrared light combined with physical therapy significantly reduced pain and improved sleep quality in patients with peripheral diabetic neuropathy. The treatment was effective in reducing symptoms and improving functionality for patients with intense pain.
Researchers developed a method to measure the brightness of two-photon stimuli using photometric units, enabling the quantification of perceived brightness. The study found that two-photon retinal illumination can reach almost 670 cd/m² in safe laser power ranges.
A new wearable laser device can non-invasively monitor changes in brain blood flow and volume, offering a simple way to assess stroke risk. The device uses speckle contrast optical spectroscopy to detect early physiological signs of increased stroke risk.
Researchers at NIST have developed a new method to measure biomolecules in live cells using infrared light, removing water's obscuring effects. This allows for the determination of key biomolecules like proteins and their amounts in cells, speeding up advances in biomanufacturing and cell therapy development.
A new method to measure continuous light spectrum improves thermal imaging accuracy without direct contact. It eliminates wavelength and temperature dependence, revealing higher surface temperatures of photothermal catalysts than previous methods.
Researchers have developed MXene/CNT Janus films with high electrical conductivity, robust mechanical strength, and excellent thermal camouflage performance. These films demonstrate exceptional electromagnetic shielding capabilities and can detect infrared radiation, making them ideal for harsh environment applications.
Researchers have developed procedures for using gold nanostars to perform more efficient, conformal, and safe laser ablations for treating brain tumors. This technique addresses limitations in traditional LITT by providing improved precision for lesions greater than 3 cm or with complex shapes.
The Indian Institute of Science has fabricated a device to up-convert short infrared light to the visible range, utilizing a non-linear optical mirror stack made of gallium selenide. This innovation has diverse applications in defence and optical communications, including astronomy and chemistry.
Researchers developed a 3D metamaterial capable of detecting polarization and direction of light, overcoming limitations of conventional optical devices. The breakthrough technology utilizes pi-shaped metal nanostructures with numerical aperture-detector polarimetry to analyze light distribution.
Researchers at TU Graz have calculated that metal phthalocyanine molecules generate tiny magnetic fields when irradiated with circularly polarized infrared light. The team aims to experimentally prove the principle, which could lead to high-precision optical switches for quantum computer circuits.
Researchers demonstrate a new way to confine infrared light using thin-film oxide membranes, which outperform bulk crystals in resolution and frequency maintenance. The technique has potential applications in photonics, sensors, and thermal management.
The study found that an 80% concentration of zirconium dioxide (ZrO2) and specific solvents leads to the highest pattern transfer efficiency. The conversion efficiency reaches impressive levels in the ultraviolet spectrum, paving the way for commercial viability of metasurfaces.
The IRIS beamline at BESSY II has been extended with a nanoscope, enabling the imaging and spectroscopy of structures smaller than a thousandth of a human hair. This upgrade allows researchers to study biological systems, catalysts, polymers, and quantum materials with unprecedented resolution.
A team at the University of Tokyo has constructed an improved mid-infrared microscope that enables them to see the structures inside living bacteria at the nanometer scale with a resolution of 120 nanometers. This breakthrough can aid multiple fields of research, including into infectious diseases.
A team of scientists has discovered that purple bacteria, which thrive in low-energy light, could be a sign of life on Earth-like planets. Using this knowledge, researchers have created models of purple worlds with varying conditions and cloud cover, revealing intense colored biosignatures from both wet and dry purple bacteria.
A new window coating developed by the University of Notre Dame's Tengfei Luo and his team maintains functionality and efficiency regardless of the sun's position in the sky. The coating reduces air-conditioning cooling costs by more than one-third in hot climates.
Duke researchers have developed a new technique to engineer carbon-based semiconductors by wrapping metallic nanotubes in spiral polymers, transforming them into semiconducting forms that can be switched on and off. This method enables the creation of semiconductors that can control electricity with low-energy light wavelengths, openin...
A novel approach estimates metabolic activity and infers blood glucose levels from near-infrared measurements in commercial smartphones and smartwatches. The phase delay between oxyhemoglobin and deoxyhemoglobin signals closely relates to oxygen consumption during cardiac cycles, serving as a gauge for metabolism.
Researchers developed innovative Au@Cu7S4 yolk@shell nanocrystals capable of producing hydrogen when exposed to both visible and NIR light, achieving a peak quantum yield of 9.4% in the visible range and 7.3% in the NIR range for hydrogen production.
Researchers at Kyoto University have developed a novel method for quantum infrared spectroscopy, generating a wider range of infrared photons with improved sensitivity. This breakthrough enables compact, high-performance scanners for various applications in environmental monitoring, medicine, and security.
A team of astronomers used JWST data to create detailed photos of nearby star-forming galaxies, revealing the intricate physics of cosmic dust. The study found consistent patterns in the distribution of diffuse gas across galaxies, suggesting universal principles in star and planet formation.
Researchers at Helmholtz-Zentrum Dresden-Rossendorf have developed tiny electromagnets made of ultra-thin carbon, graphene, using terahertz pulses. The graphene discs briefly turned into strong magnets, with magnetic fields in the range of 0.5 Tesla, and showed promise for developing future magnetic switches and storage devices.
Astronomers combined the Webb and Hubble telescopes to capture a detailed portrait of the cosmos, revealing a galaxy cluster about 4.3 billion light-years from Earth. The image showcases magnified supernovae and individual stars, providing insights into the universe's first stars and the forces driving its expansion.
University of Leicester astronomers confirm the existence of an infrared aurora on Uranus, offering clues to its magnetic fields and potential for life. The discovery may also help identify other habitable planets with similar characteristics.
Researchers have developed a material for next-generation dynamic windows that can switch between transparent, infrared-blocking, and tinted modes. The material uses electrochromism and water to achieve this functionality.
Researchers at City University of Hong Kong have developed a new class of near-infrared-activated photo-oxidants that can effectively kill cancer cells without requiring oxygen. The discovery offers a promising direction for developing anti-cancer drugs and could overcome existing limitations of photodynamic therapies.
Scientists have developed a nonrelativistic and nonmagnetic mechanism for generating terahertz waves, harnessing the electrical anisotropy of two conductive oxides. This approach produces signals comparable to commercial terahertz sources and offers a high terahertz conversion efficiency.
Researchers at Hokkaido University have developed copper-doped tungstic acid nanocrystals that can harness all-solar energy, including infrared light. The nanocrystals exhibit enhanced photothermal and photo-assisted water evaporation characteristics, making them suitable for various applications.