Articles tagged with Light Scattering
A team from TU Wien has developed a method to cool several particles simultaneously by adapting the spatial structure of a laser beam to particle motion. The technique uses far-field wavefront shaping to optimize cooling and can be achieved without knowing the exact location or movement of the particles.
Scientists developed a sensitive nanostructured silver surface to detect arsenic in water, food and soil using surface-enhanced Raman spectroscopy (SERS). The new technique is more sensitive and easier to produce than existing methods, making it ideal for on-site field assays.
Scientists at Shinshu University have created a new method for achieving structural coloring through plasma irradiation of graphite, eliminating the need for harmful color dyes. The technique produces erasable and stable colors that can be manipulated using various factors, offering a sustainable solution for the art world.
A water droplet acts as a model of an atom when illuminated by laser light, allowing researchers to study resonance phenomena and energy levels. The droplet's size changes due to evaporation, creating a visible 'optical atom' that can be used to analyze water quality and detect pollutants.
Researchers developed a novel, calibration-free, and reconstruction-free imaging technique that directly obtains a clear image from a single shot of speckle images. The method uses real-time video imaging to build a three-dimensional image, taking slices through the speckles.
Research by Dr. Jessie Turner and colleagues highlights the impact of water-clarity metrics on seagrass and light-loving organism restoration goals. The study suggests that different measurement methods can misrepresent underwater light climates, emphasizing the need for clear communication of methods used.
Researchers at Kyoto University have developed nanoantennas that significantly increase the efficiency and photoluminescence of white LEDs by replacing aluminum with titanium dioxide. This breakthrough enables the creation of intensely bright yet energy-saving solid-state lighting solutions.
Scientists at the Max Planck Institute have developed a unidirectional device that significantly increases the quality of optical vortex signals. By transmitting selective optical vortex modes exclusively unidirectionally, they largely reduce detrimental backscattering to a minimum.
A research team at UNIST has developed a perovskite-silicon tandem solar cell with a special textured anti-reflective coating, increasing its power conversion efficiency to 23.50%. The device maintains its initial efficiency for 120 hours, outperforming existing devices which drop to 50% after 20 hours.
Researchers compiled 41 solar occultation observations of Saturn's rings from the Cassini mission to inform future investigations into their formation and evolution. The study reveals new information on ring particles' sizes and compositions, shedding light on the origins of the ring system.
A team of researchers led by Prof. Shinya Hosokawa analyzed the atomic configurations of Pd42.5Ni7.5Cu30P20, a champion bulk metallic glass, and found its characteristic configurations that lead to its excellent glass-forming ability.
Researchers developed a new holographic microscope that can see through the intact skull and image the neural network of a living mouse brain with high resolution. The technology uses a wave correction algorithm to filter out multiple scattered light waves, allowing for sharper images.
Researchers at Texas A&M University created a device that harnesses quantum fluctuations to enhance spectroscopy results in Brillouin microscopy, increasing image clarity and accuracy. The new source significantly improves the signal-to-noise ratio, allowing for better visualization of biological structures and properties.
Researchers characterize material properties of IP-Q using Raman spectroscopy and nanoindentation, revealing elastic parameters and their effects on acoustic behavior. The study optimizes elastic parameters for TPP-fabricated structures, benefiting applications in life science, mobility, and industry.
Huddersfield researchers are working on a new project to develop novel and sustainable molecular materials that harness light to drive useful chemical reactions. The project aims to address the limitation of using rare and expensive elements like ruthenium and iridium in current applications. By exploring the intrinsic properties of li...
A new broadband near-field chiral source enables comparison of different edge states to advance applications in integrated photonics and wireless devices. The research advances the field of chiral photonics science, promoting applications of chiral-sorting technology for microwave metadevices.
Researchers at TU Wien and the University of Rennes have created a method to calculate tailor-made anti-reflective structures that can be used to reduce wave reflections in various mediums. This technology has potential applications in improving wireless reception, imaging techniques, and even future mobile communications.
Using nearly two decades of research and ultrabright X-ray beams, scientists have created a detailed structural map of the nuclear pore complex (NPC), a key regulator of cellular operations. The results provide significant implications for understanding disease mechanisms and developing new treatments.
By using the brain's visual response as feedback, researchers can reconstruct images of simple objects in real-time. The technique has potential applications in augmenting human capabilities and could one day be used to bring together human and artificial intelligence.
Scientists at Max Born Institute create novel method to probe magnetic thin film systems, identifying heat injection from platinum layer as cause of magnetization changes. The approach allows femtosecond temporal and nanometer spatial resolution, paving way for studying ultrafast magnetism and device-relevant geometries.
A collaborative initiative aims to establish common protocols for assessing and comparing diffuse optics systems used in medical diagnosis. The study presents the results of a multi-laboratory comparison of 12 institutions and 28 systems, proposing simple numeric values for easy comparison across instruments.
Researchers at Boston College have discovered a new particle known as the axial Higgs mode, a magnetic relative of the mass-defining Higgs Boson particle. The detection was made possible by using light scattering and quantum simulator techniques in a tabletop experiment at room temperature.
Researchers at Arizona State University have developed a new technique called evanescent scattering microscopy (ESM), which allows for the visualization of proteins and other vital biomolecules with unparalleled clarity. This label-free imaging method reduces light-induced heating and requires no fluorescent dye or gold coating, making...
A new measurement and imaging approach resolves nanostructures smaller than the diffraction limit without dyes or labels, using polarization and angle-resolved images of transmitted light. The method measures particle size and position with high accuracy, closing the gap between conventional microscopes and super-resolution techniques.
A WVU postdoctoral researcher has made a groundbreaking discovery in the field of magnetic reconnection, which can be used to predict space weather events that affect satellite and power grid systems. The study uses advanced laser diagnostics to measure electron speeds, providing new insights into plasma physics processes.
Researchers found that mitochondria act as microlenses to focus light on outer segments where it's converted into nerve signals, shedding new light on the retina's optical properties. This discovery has potential clinical implications for detecting retinal diseases.
Researchers have discovered that altering the interface between two materials in time can lead to new opportunities for wave manipulation. This breakthrough enables novel concepts and applications in photonics, including nonreciprocal gain, power steering, and optical drag.
A new microscope allows for real-time aberration-free dynamic speckle microscopy using compressed time-reversal matrix technology. This enables almost real-time volumetric adaptive optical imaging with reduced data acquisition time and improved lateral resolution.
Researchers developed a new reagent-free detection technique for SARS-CoV-2 using Raman spectroscopy and machine learning. The method shows an accuracy of 80% in detecting COVID-19 infections from saliva samples, overcoming limitations of RT-PCR testing.
A new compression algorithm using deep learning enables accurate modeling of light scattering by non-spherical particles. The developed method reduces the file size to 20MB, making it 7000 times smaller than the original database.
A new wearable headset, Kernel Flow, monitors brain activity using time-domain fNIRS. The system can record high-resolution brain signals from across the brain with performance similar to conventional systems.
Researchers have developed a label-free detection technique that digitally counts intact SARS-CoV-2 virus particles in saliva or exhaled breath. The approach uses an aptamer attached to a biosensor to selectively recognize and capture viruses, providing lower cost and reduced time to diagnose infections.
Researchers have created a new, simpler way to fabricate SERS nanostructures with superior stability and performance at low cost. By using a heat-resistant polymer called polyimide (PI), they can produce nanosurfaces with nanopillars that enhance signal intensity for efficient chemical detection. The new fabrication method has the pote...
A new optical instrument will provide clearer images of the rhizosphere, enabling scientists to study chemical and biomolecular interactions between plants and soil. This research aims to mitigate the effects of climate change and develop more sustainable fuels and fertilizers.
Researchers from UC Riverside developed a revolutionary imaging technology that compresses light into a nanometer-sized spot, allowing for unprecedented 6-nanometer color imaging of nanomaterials. This advance improves the study of unique properties and potential applications in electronics and other fields.
Researchers at JILA have developed a technique to extend the excited-state lifetime of atoms in a Fermi sea, allowing for improved quantum communication networks and atomic clocks. By manipulating the Pauli exclusion principle, they achieved a significant delay in spontaneous decay.
MIT physicists have observed the Pauli exclusion principle suppressing how a cloud of ultracold, superdense atoms scatter light. The effect, known as Pauli blocking, makes the atoms effectively transparent and invisible to photons.
Physicists at the University of Bath have found a way to reveal the forbidden colours of light in twisted nanoparticles, opening up new possibilities for emerging nanotechnologies. This discovery has implications for communications, nanorobotics and ultra-thin optical components.
Scientists designed loss in optical devices to achieve unconventional physical phenomena, leading to novel methods for optical control and engineering. The team created two whispering gallery mode microresonators with different absorption losses, coupling their fields to achieve coherent perfect absorption.
A Russian-U.K. research team has proposed a theoretical description for the new effect of quantum wave mixing involving classical and nonclassical states of microwave radiation. The study builds on earlier experiments on artificial atoms, which serve as qubits for quantum computers and probes fundamental laws of nature.
Researchers discovered false optical activity in Raman spectroscopic analysis of vitamin B12 and its derivatives, leading to misinterpretations of data. The phenomenon was attributed to circular dichroism and can be computationally modeled or adapted to measurement methods.
Researchers developed a non-invasive optical technique using spectroscopy to identify structural changes in the brain and diagnose Alzheimer's disease. The new technology has potential as a simple, completely non-invasive method of early detection and could also assess treatment effectiveness.
A new imaging technique called DEEP enables researchers to image complex biological systems at high resolution and speeds previously impossible. This breakthrough may lead to new understandings of brain function and other biological processes.
A team of MIT and Harvard University researchers has developed a modified version of two-photon imaging that can image deeper within tissue and perform the imaging much more quickly than what was previously possible. This technique allows for high-resolution images of structures such as blood vessels and individual neurons within the b...
Optical cloaking technology may soon be used in vehicles to remove blind spots and enhance safety. Recent research has made progress in developing invisibility cloaks using standard optical components.
Scientists developed a method to dynamically switch liquid metal surfaces between reflective and scattering states using electricity. This technology could be used to create electrically controllable mirrors or illumination devices, enabling new applications in art and advanced devices.
Researchers have developed a new technique called diffuse optical localization imaging (DOLI) that enables noninvasive imaging of the brain's microvasculature and neural activity at depths of up to 4 millimeters. This method uses the NIR-II window and is poised to bring new insight into how the brain works in health and disease.
Researchers at the Centre Spatial de Liège developed a method to identify and characterize stray light on space telescopes using femto-second pulsed lasers. This will improve the quality of images and develop more efficient space instruments.
Researchers at NIST measured moon dust particles as small as 400 nanometers, revealing a strong link between particle shape and light scattering. The study uses X-ray nano computed tomography to analyze particle shapes and improve satellite tracking of weather patterns.
Researchers at MIT have developed a dynamical machine learning approach to tackle the challenge of reconstructing object interiors from limited-angle data. The method exploits sequential information to improve reconstructions, achieving promising results in weak and strong scattering conditions.
Researchers at Utrecht University and TU Wien have developed special light waves that can bypass scattering in complex media, enabling precise imaging of objects. This breakthrough could revolutionize biological experiments, such as studying cells, by controlling light distribution inside tissues.
A novel cancer diagnosis technique using circularly polarized LEDs can detect precancerous lesions and early cancer, providing valuable information for treatment decisions. The method uses spin-LEDs to emit circularly polarized light, which interacts with healthy and unhealthy cells differently.
A study by researchers at the University of Campinas investigated optomechanical coupling, creating a theoretical model that was validated by simulations and comparisons with experimental results. The researchers found that both dispersive and dissipative interactions occur in microcavities, which can contribute to advances in fields s...
Researchers find that cooperative effects play a significant role in photon escape rates from cold atomic gases, exceeding the impact of disorder. The study uses complex models to account for light-matter interactions and finds that a simple scalar model can accurately predict escape rates.
Research by Matthew Staymates found N95 masks with exhalation valves ineffective at filtering respiratory droplets. Masks without valves block most droplets, making them a more effective choice for disease prevention.
Researchers created airflow videos showing how exhalation valves on masks defeat the purpose of slowing COVID-19 spread. The videos, published in Physics of Fluids, demonstrate that air can leave masks unfiltered through valves, reducing mask effectiveness.
Researchers have designed novel linear nanomotors powered by laser light, enabling controlled movement and reducing complexity. The technology uses localized surface plasmon resonance to produce directional scattering, allowing for precise navigation.
Researchers from Hokkaido University and the US used computer simulations to show that high pressure can reduce light scattering in silica glass fibers by over 50%. This could enable longer distance data transmission without amplification, revolutionizing global communication.
Researchers have discovered a new way to observe color through the scattering process, which combines with optical interference to create bright colors. The findings, published in Advanced Optical Materials, could have practical applications in sensing technology and security devices.
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.