Articles tagged with Wavelengths
A group of researchers has developed new inquiry-based models for optical states in photonic crystals, leading to breakthroughs in high-polarization-sensitive sensors. The study focuses on three-dimensional opal-like photonic crystals, which can be used to improve control over light in these systems.
A new imaging system cancels chromatic optical aberrations in individual eyes, allowing for precise assessment of vision and eye health. The technology provides the first objective measurement of longitudinal chromatic aberrations (LCA), which could lead to insights into visual halos, glare, and color perception.
Kent State University's Oleg Lavrentovich receives $540,000 grant to study 'Active colloids with tunable interactions in liquid crystals.' He also receives a $450,000 NSF award for 'Electrically tunable cholesteric optical filters,' with potential applications in biomedical imaging and smart windows.
Researchers at DESY used precisely tuned laser light to capture the ultrafast rotation of carbonyl sulphide molecules, revealing the intricate dance of quantum mechanics. The resulting 'molecular movie' provides new insights into molecular dynamics and has potential applications for studying other molecules and processes.
Researchers from University of Pittsburgh's Swanson School of Engineering created a nanostructure glass that takes inspiration from the wings of the glasswing butterfly to create a new type of glass that is clear across a wide variety of wavelengths and angles, as well as antifogging.
Researchers at US Naval Research Laboratory developed a new technique that enables precise control over quantum dot wavelengths, paving the way for breakthroughs in quantum information technologies and brain-inspired computing. This achievement could lead to new technologies that harness the strange properties of quantum physics for co...
Researchers at HZDR have developed nanowires with tunable shells, enabling them to operate over a wide energy range. This breakthrough increases the potential of nanowires for various applications, including LEDs and solar cells.
A UTA research team is working with the Army Research Laboratory to develop nanophotonic devices that can capture and release light in the longwave infrared spectral region. These devices have potential applications in thermal imaging, medical diagnostics, chemical analyses, and environmental monitoring.
Researchers at DESY and the University of Hamburg achieved an important milestone in compact particle accelerator development. They produced high-energy terahertz pulses using ultra-powerful laser pulses, paving the way for new applications in fields like particle physics and nanomaterials research.
Researchers have successfully integrated optoelectronics into three-dimensional (3D) structures using femtosecond laser direct writing. The technique allows for the creation of hybrid microlaser modules with selective electric modulation, paving the way for more compact and efficient integrated circuits.
Researchers found that deep-sea fish have expanded rhodopsin genes to detect bioluminescent signals, giving them an evolutionary advantage. The silver spinyfin has the most photopigment genes of any vertebrate, allowing it to detect specific wavelengths of light produced by bioluminescent organisms.
Experiments using Hellman's Real Mayonnaise and accelerated conditions confirm the instability of elastic-plastic material is a function of initial conditions. The study provides new insights into the dynamics of materials in extreme environments, relevant to inertial confinement fusion.
Researchers at Caltech Optical Imaging Laboratory created a technique to break the acoustic diffraction limit in PACT by localizing single dyed droplets flowing in blood vessels, achieving six-fold finer resolution. The droplets provide excellent tracers for super-resolution imaging and enable tracking of blood flow speed.
Researchers at KAUST have developed a compact radar with short wavelengths to enhance close-range detection capabilities. The device is capable of target detection, speed estimation, and tracking at ranges of up to 12 meters, making it suitable for visually impaired people and unmanned devices.
Hybrid magnetic-plasmonic elements enable contactless temperature control in magnetic functional metamaterials, facilitating local, efficient, and fast heating schemes. Sublattice-specific heating on sub-nanosecond time scales is achieved using plasmon-assisted photo-heating.
Researchers at SLAC National Accelerator Laboratory have developed a novel compact antenna that can enable mobile communication in situations where conventional radios fail. The device emits low-frequency radiation with wavelengths of tens to hundreds of miles, allowing it to penetrate environments that block radio waves.
Researchers at the University of Wisconsin-Madison have developed a compact spectrometer that can integrate with smartphone cameras, enabling real-time chemical identification. The device boasts high resolution and low fabrication costs, paving the way for enhanced sensors in various fields.
Researchers at EPFL have developed a new compact laser source that can detect greenhouse gases and molecules in a person's breath. The system uses a fiber laser combined with a micrometer waveguide chip to generate light waves in the mid-infrared spectrum, retaining 30% of the original signal strength.
Researchers developed liquid crystal technology that can block a wide range of laser wavelengths, including red, blue, and green. The system uses a voltage-controlled phase change to scatter light and block laser beams.
A team of researchers has successfully generated ultra-short spin waves in an astoundingly simple material, opening up new possibilities for the development of spintronics. The achievement uses a magnetic material shaped into circular disks to create spin waves with wavelengths as short as 80 nanometers.
Researchers have found a way to exploit multicore fiber technology to solve the encryption problem in secure data transmission. The approach uses dedicated cores of a multicore fiber to avoid noise generated by core-to-core crosstalk, allowing for up to 341 QKD channels.
Astronomers from UCI and other institutions have successfully used the Habitable Planet Finder to discover and confirm the existence of exoplanets. The new technique has been demonstrated on a recently discovered super-Earth orbiting Barnard's star, expanding the selection of stellar targets for exoplanet hunting.
A new method developed by Northwestern Engineering's Manijeh Razeghi has greatly reduced image distortion caused by spectral cross-talk in dual-band photodetectors. This work enables high spectral-contrast infrared imaging devices for various applications, including medicine and security.
Researchers suggest engineered light can regulate human health and productivity by eliciting hormonal responses, while tailored LED wavelengths stimulate plant growth and increase nutritional value. The broader integration of LEDs with technology holds potential for significant societal value beyond energy savings.
A team of scientists developed a single, cohesive computer model to simulate the entire life cycle of a solar flare, from energy buildup to explosive release. The comprehensive model captures the formation of tangled magnetic field lines and roiling sunspots, which can impact Earth's power grids, communications networks, and astronauts.
The team produced spintronic oscillators that strengthen spin wave signals in several steps, demonstrating a new phenomenon. They showed sharp jumps in frequency from the fundamental tone to much higher frequencies using overtones, paving the way for faster data transmission rates in wireless communication.
The device can measure multiple wavelengths of light, including UVB and UVA, to optimize treatment of neonatal jaundice, skin diseases, seasonal affective disorder, and reduce the risk of sunburns and skin cancer. It enables precision phototherapy and warns users of impending sunburns.
Researchers at MIT have devised a new way of providing cooling on a hot sunny day using inexpensive materials and no fossil fuel-generated power. The passive system allows emission of heat at mid-infrared range, radiating into outer space and punching through greenhouse gases.
Researchers have successfully created functional metalenses using layered 2D materials, achieving record-thin levels of optical lensing. The development opens up new possibilities for constructing nanophotonic devices entirely out of 2D materials.
Researchers found that the Wild Duck Cluster's stars are older than initially thought due to their rotational periods, which affect their hydrogen core mixing and lifetime. This discovery sheds light on how stars form and evolve, challenging previous assumptions about open clusters.
Researchers have created a new air-filled optical fiber bundle that can improve endoscopes used in medical procedures like minimally invasive surgeries. The technology allows for higher resolution images at double the wavelength range, enabling diagnostic procedures not possible with current endoscope technology.
Researchers detected 20 fast radio bursts in a year, nearly doubling the worldwide total since their discovery in 2007. The bursts originate from halfway across the Universe, with their incredible energy equivalent to the Sun's release over 80 years.
A team of physicists has identified a way to create quantum bits in silicon carbide crystals, emitting photons at wavelengths near those used in data transmission. This breakthrough enables the potential for quantum communication through standard optical fibers, paving the way for superior computing powers and unbreakable cryptography.
Astronomers using MUSE instrument on ESO's VLT detected an unexpected abundance of Lyman-alpha emission in the Hubble Ultra Deep Field region, covering nearly the entire field of view. This discovery suggests that almost all of the sky is invisibly glowing with Lyman-alpha emission from the early Universe.
Researchers at IBS have developed a new method to generate extreme-ultraviolet emissions, opening doors for high-resolution imaging, ultrafast spectroscopy, and next-generation lithography. By controlling electron motion using laser pulses, they created coherent radiation with specific wavelengths.
Astronomers observed water vapor jets streaming away from a protostar, detecting heavy water naturally emitted by water molecules. ALMA also observed a wealth of complex organic molecules surrounding the star-forming region, with over ten times more spectral lines than previous observations.
Researchers used terahertz frequency quantum cascade lasers to study laser stabilisation process, measuring wavelength changes in femtoseconds. This ultrafast detection capabilities provide unprecedented levels of detail, leading to more efficient devices and systems.
Researchers at MIT have designed an optical filter on a chip that can process optical signals from across an extremely wide spectrum of light. The technology offers greater precision and flexibility for designing photonic devices, studying photons, and other applications.
The Compact Thermal Imager (CTI) will measure fires, ice sheets, glaciers, and snow surface temperatures while also tracking water transfer from soil and plants into the atmosphere. The CTI's enabling technology, Strained-Layer Superlattice Technology, is 10 times more sensitive than its predecessor and operates at warmer temperatures.
Researchers found two opsin variants in the retina of flashlight fish, activated by low-intensity blue light, which influences behavioral responses. The study suggests that bioluminescence is processed and used to adjust behavior in this species.
Researchers developed a technique using gold nanoparticles to trigger unfolding of 3D structures in shape memory polymers. The polymer unfolds when exposed to specific wavelengths of light, offering flexibility and tunable optical properties.
Researchers at FAU successfully generated controlled electron pulses in the attosecond range using optical travelling waves formed by laser pulses. This breakthrough enables ultrafast movements to be tracked, such as vibrations in atomic lattices and molecular bonds in chemical reactions.
Researchers at the University of Illinois have developed a tunable infrared filter made from graphene, allowing soldiers to change the frequency of a filter simply by controlled mechanical deformation. This breakthrough enables real-time chemical detection and identification, overcoming limitations of conventional filters.
Researchers from NICT and Fujikura successfully demonstrated a transmission experiment over 1045 km with a data-rate of 159 Tb/s using a 3-mode optical fiber. This achievement sets the world record for a standard outer diameter few-mode optical fiber, surpassing previous records by about twice.
A team of researchers at MIT has shown that an FDA-approved dye can be used for short-wave infrared imaging, producing clearer images of blood vessels and other body tissues. This breakthrough could enable doctors to visualize these structures with greater accuracy, leading to improved diagnosis and research.
Researchers have developed a 'Swiss army knife' for electron beams, combining acceleration, compression, focusing and analysis in a single device. The Segmented Terahertz Electron Accelerator and Manipulator (STEAM) uses precise timing control to perform these functions with ultra-high precision.
A new field instrument can quantify methane leaks as tiny as one-quarter of a human exhalation from nearly a mile away. The revamped laser technology provides game-changing information for safe industry operations and controlling harmful greenhouse gas emissions.
Researchers at Harvard SEAS developed a flat metalens that can resolve details smaller than a wavelength of light, generate optical vortices and holograms, and exhibit achromatic behavior in multiple colors.
Rochester researchers have developed a technique using the flying focus concept to better control the intensity of lasers over longer distances. By capturing fast-moving movies, they can manipulate the focal velocity and produce high-intensity light sources with novel wavelengths.
Scientists at the University of Washington created a hybrid optics system combining ultrathin metalenses with computational processing to produce high-efficiency full-color images. This innovation overcomes the narrow wavelength range limitation of traditional metalenses, enabling improved image quality and resolution in various applic...
Researchers in Australia have developed a novel platform for light-matter interaction in fiber optics, opening up new horizons for communication and photonics technology. The system uses terahertz radiation with higher bandwidth capacity than current microwave networks.
The new design doubles the conversion efficiency of conventional systems, allowing for greater bandwidth and resolution in detecting pollutants and diseases. The technology also enables the miniaturization of such systems onto a chip, leading to new applications for molecular detection and remote sensing.
IceCube, a bread loaf-sized satellite, has produced the world's first map of global atmospheric ice distribution in the 883-Gigahertz band. This achievement demonstrates submillimeter wavelength observations from space and provides critical data on cloud ice properties.
Researchers at University of Bristol have successfully trapped objects larger than the wavelength of sound in an acoustic tractor beam, paving the way for levitation of humans. The discovery uses rapidly fluctuating acoustic vortices, which are stabilised by controlling the rate of rotation.
Developed in Brazil, the device measures temperatures in a wide band between 80-750 kelvin using spectroscopy and has applications in manufacturing and biological processes. It can be used in electronic equipment identification and detection of viral or bacterial infections.
Researchers at USC Viterbi School of Engineering developed a new, energy-efficient frequency comb that can be used to encrypt data and protect the security of cryptocurrencies. The comb requires 1000x less power than traditional combs, making it suitable for mobile applications.
Researchers at Harvard have developed a single metalens that can focus the entire visible spectrum of light, including white light, in high resolution. This breakthrough eliminates chromatic aberrations and reduces thickness and design complexity compared to traditional lenses.
A new optical-fiber-based laser enables detection of chemicals by analyzing reflected light patterns. The device uses a broadband infrared supercontinuum laser to identify substances based on their chemical signature.
Researchers developed a hyperlens crystal made from isotopically purified boron, increasing its potential imaging capability by a factor of ten. The new material can capture images of objects as small as 30 nanometers in size, enabling direct observation of cellular processes.
Researchers at Kyushu University developed a method to tune the fluorescence wavelength of carbon nanotubes by tethering organic molecules. This enables fine control over the emission wavelength, with potential applications in biomedical devices and bioimaging.