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Research & Technology News

Vertically Stacked Micro-LED Architecture Sharpens Displays
CAMBRIDGE, Mass., Feb. 15, 2023 — An international team of researchers and engineers has developed an approach to make displays, such as those for augmented and virtual reality (AR/VR), sharper and defect-free. The researchers devised an architecture in which they stacked red, green, and blue LEDs in a formation to create vertical, multicolored pixels as opposed to placing the diodes side-by-side in a horizontal patchwork. Each stacked pixel generated the full range of commercial colors. The microscopic pixels, or
Electrochromic Smart Window Provides High Performance at Low Cost
BENGALURU, India, Feb. 10, 2023 — Researchers at the Centre for Nano and Soft Matter Sciences (CeNS) and the Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) have fabricated a smart window that provides a low-cost alternative to the traditional smart windows used in...
Light-Activated Molecular Machines Kill Pathogenic Fungi
HOUSTON, Feb. 9, 2023 — In the game-turned-TV series, The Last of Us, post-apocalyptic survivors Joel and Ellie make their way across the U.S., outrunning zombie hordes while coping with societal collapse, all caused by a nasty mutation in the parasitic Cordyceps fungus,...
Perovskite Prodding Reveals Structural Dynamics
HOUSTON, Feb. 8, 2023 — A Rice University research team, with help from the Department of Energy’s SLAC National Accelerator Laboratory, has directly measured the structural dynamics in 2D perovskites. The team’s investigation into the light-induced physical...
Built Off Anti-Laser, Device Directs Electromagnetic Waves
NEW HAVEN, Conn., Feb. 7, 2023 — Building off a breakthrough “anti-laser,” a team of researchers from Yale University’s School of Engineering and Applied Sciences has developed a system that can direct light and other electromagnetic waves for signal processing...
Researchers Develop Chip-Size Titanium-Doped Sapphire Laser
NEW HAVEN, Conn., Feb. 6, 2023 — A team of researchers has developed what is reportedly the first chip-scale titanium-doped sapphire laser — an innovation that could lead to new applications ranging from atomic clocks to quantum computing and spectroscopic sensors. The...
Module Uses Single-photon Microscopy to Track Cellular Activity
GENOA, Italy, Feb. 3, 2023 — BrightEyes-TTM, an open-source time-tagging module (TTM) developed at the Italian Institute of Technology (IIT), enables scientists to observe the dynamic processes of molecules inside living cells over time, at a thousandth of a millisecond scale....
Speckle-correlation Technique Recovers Images of Obscured Objects in Real Time
THUWAL, Saudi Arabia, Feb. 2, 2023 — Imaging through a light-scattering medium, such as clouds in the sky or tissues in the body, poses special challenges. The scattered light must be reconstructed, typically by using complex optical elements in an environment that is vulnerable to...
Simple Approach to Laser Color Conversion Uses SRS in Ionic Liquids
UPTON, N.Y., Feb. 1, 2023 — Scientists from Brookhaven National Laboratory showed that ionic liquids provide an efficient means to convert one color of laser light into another. The discovery could lead to a way to create lasers with desired colors for a range of medical,...
Spatiotemporal OCT Method Advances Ophthalmological Imaging
WARSAW, Poland, Jan. 31, 2023 — Spatio-Temporal Optical Coherence Tomography (STOC-T), an ophthalmological imaging technique originally invented to capture optoretinograms, has been enhanced by its developers at the International Centre for Translational Eye Research (ICTER) to...
Faster Detector Could Make Quantum Communication Practical
PASADENA, Calif., Jan. 30, 2023 — NASA researchers have developed a detector that precisely measures single photons at high rates and could help to make high-speed quantum communication practical. The detector, created by researchers led by Matthew Shaw at NASA’s Jet...
Superhydrophilic Coatings Increase Efficiency of Solar Cells
DRESDEN, Germany, Jan. 30, 2023 — Researchers at the Fraunhofer Institute for Organic Electronics, Electron Beam, and Plasma Technology FEP (Fraunhofer FEP) produced hydrophobic, or water-repelling, surfaces that become superhydrophilic, or superwetting, under ultraviolet (UV)...
Signal Enhancement Enables Study of Label-Free Proteins
MARSEILLE, France, Jan. 26, 2023 — Researchers at Institut Fresnel have developed a technique to detect the ultraviolet-autofluorescence signal in single proteins, opening the way for the label-free study of thousands of proteins whose natural fluorescence cannot be detected using...
Single-Pixel Camera Streams in Real Time at 100 fps
VARENNES, Quebec, Jan. 26, 2023 — The speed of most single-pixel imaging (SPI) systems is hampered by the refresh rates of digital micromirror devices (DMDs) and the time-consuming iterations of compressed-sensing (CS)-based reconstruction. The data acquisition rate of most SPI...
Human Limb Model Could Evaluate Fluorophores for Safety in Surgery
BELLINGHAM, Wash., Jan. 25, 2023 — As the popularity of fluorescence-guided surgery grows, so does the demand to design and develop fluorophores, which serves to distinguish the target tissue from other tissues and subsequently guide surgical steps. The current list of FDA-approved...
Research Project Seeks to Standardize Lidar Tests
DAYTON, Ohio, Jan. 20, 2023 — A national group formed by Paul McManamon of Exciting Technology, in conjunction with SPIE, is working to develop standardized tests to evaluate lidar technologies. Despite their crucial role in both autonomous vehicles and advanced driver...
Fully Tunable Method Strengthens Electron-triggered Light Emission
CAMBRIDGE, Mass., Jan. 19, 2023 — A wavelength of visible light is about 1000 times larger than an electron. Because of the difference in scale, the interactions between photons and electrons are inherently weak. MIT researchers have found that photonic flatbands can overcome the...
Researchers Test Imaging Modalities For Accessing Tooth Decay
SAN FRANCISCO, Jan. 19, 2023 — To improve dental health, researchers at the University of California, San Francisco evaluated optical imaging techniques for their efficacy in the identification of secondary tooth decay, which can occur even if a tooth has already been filled. The...
Acoustic Imaging Aims to Reduce Tissue Damage from Radiation Therapy
ANN ARBOR, Mich., Jan. 18, 2023 — The need to deliver the intended, optimal radiation dose to a tumor while sparing the healthy tissue surrounding the cancer is critical to cancer treatments using radiation therapy. Now, with a real-time, 3D imaging system developed at the...
Laser Method Drills Taper-, Crack-Free Holes in Glass
BORDEAUX, France, Jan. 17, 2023 — Researchers from the Institute of Intense Lasers and Applications (CELIA) at the University of Bordeaux have developed a glass micro-drilling method using a femtosecond laser operating in gigahertz-burst (GHz burst) mode. The researchers used the...
Researchers Combine Two Light-Trapping Methods in Single Device
COLLEGE PARK, Md., Jan. 17, 2023 — Researchers from the University of Maryland’s Joint Quantum Institute (JQI) combined the qualities of two methods for light-trapping — whispering-gallery mode (WGM) and photonic crystals — in a hybrid device called the microgear...
High-Speed Spectral Imaging Captures Tissue’s Chemical Makeup
IRVINE, Calif., Jan. 16, 2023 — Scientists at the University of California, Irvine developed a spectral imaging technique that is poised to help researchers and industries across multiple fields, including medical and tech, quickly visualize the chemical composition of tissues and...
Hamamatsu Edges Closer to Compact Laser Fusion Source
HAMAMATSU, Japan, Jan. 13, 2023 — Building on an existing multiyear R&D pursuit to establish technology that produces laser pulses at 250 J with a repetition rate of 10 Hz, Hamamatsu Photonics has developed a laser system that produced pulses with an energy of 100 J at a...
Simulation Process Optimizes Additive Manufacturing Parameters
MUNICH, Jan. 12, 2023 — A method of simulation of the additive manufacturing process could enable better yields and higher-quality results. Researchers from Fraunhofer member institutions combined different methods to develop a simulation of the 3D-printing process itself,...
TiO2 Boosts Efficiency, Photoluminescene of White Laser Diodes
KYOTO, Japan, Jan. 10, 2023 — Light-scattering nano-elements, also known as nanoantennas due to their ability to harness light, are used as an optical control technology in nanophotonics. In combination with a phosphor plate, and upon irradiation, these 2D structures — in...

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