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Research & Technology News

Scientists Demonstrate 310-nm Nanolaser in VIS Range at Room Temperature
ST. PETERSBURG, Russia, June 12, 2020 — An international scientific team led by researchers at ITMO University demonstrated experimentally what it believes to be the world’s most compact semiconductor laser operating in the visible range at room temperature. The nanolaser produces green coherent light at room temperature. This light can be easily registered and even seen by the naked eye using a standard optical microscope. The researchers used halide perovskite as the material for their nanolaser. The perovskite provided
CEA-Leti Researchers Set Throughput Record for Li-Fi Communications
GRENOBLE, France, June 11, 2020 — CEA-Leti has set a new world record for throughput in light communications (VLC). The researchers used a single 10-μm GaN blue micro-LED to achieve a data transmission rate of 7.7 Gb/s, compared to the previous record of 5.1 Gb/s. The...
Harmonic Optical Tomography Images Nonlinear Samples in 3D
CHAMPAIGN, Ill., June 10, 2020 — Harmonic optical tomography (HOT) is a new technique for imaging microscopic, nonlinear, and inhomogeneous objects. It uses holographic information to generate 3D images of the sample. It is the result of a collaboration between researchers at the...
Lidar Technology Reveals Historic Mayan Site
TUCSON, Ariz., June 10, 2020 — A team of researchers led by archaeologists from the University of Arizona has used a laser mapping system from the air to uncover the buried ruins of an ancient Mayan site. After determining that an area in Tabasco in the southeast part of Mexico...
Nanostructured Plasmonic Materials Could Provide More Natural Color for Displays
ORLANDO, Fla., June 9, 2020 — Ultralow-power, ultrahigh-definition displays and screens that will be easier on the eyes could be possible with technology being developed by researchers at the University of Central Florida (UCF). Their approach illuminates the display by...
'Artificial Chemist' Combines AI, Robotics to Autonomously Develop Quantum Dots
RALEIGH, N.C., June 8, 2020 — Artificial Chemist, a technology invented by researchers at North Carolina State University (NC State) and the University at Buffalo, integrates artificial intelligence and an automated system for performing chemical reactions to speed R&D and...
Metasurface Design Approach Achieves Unidirectional Luminescence in LEDs
SANTA BARBARA, Calif., June 5, 2020 — Using a metasurface-based design, researchers at the University of Santa Barbara, California (UCSB) developed a way to extract more photons from LEDs and direct the light emitted from LEDs with greater precision. Their approach could be used to...
Scientists Discover Process That Enables Low-Power Nanolasers in 2D Semi-Materials
TEMPE, Ariz., June 4, 2020 — Scientists at Arizona State University (ASU) have identified the process in physics that enables nanolasers to be created using 2D materials. This led them to the discovery of a mechanism for providing optical gain in 2D materials at much lower...
Imaging System Shows Heart Health Risk of Hydroxychloroquine
ATLANTA, June 3, 2020 — An optical mapping system has demonstrated that hydroxychloroquine (HCQ) can cause arrhythmia in animals, so researchers and clinicians are cautious about its effectiveness as a treatment of COVID-19 in people. Previously, HCQ, a less toxic form of...
Smart Windows Self-Illuminate on Rainy Days
POHANG, South Korea, June 3, 2020 — A joint research team has developed a technology that will allow windows to change colors according to the amount of moisture, without the need for electricity. The researchers developed a variable color filter using a metal-hydrogel-metal resonator...
UV Light and Riboflavin Reduce SARS-CoV-2 Pathogens in Plasma, Whole Blood
FORT COLLINS, Colo., June 2, 2020 — Researchers at Colorado State University (CSU) showed that exposure to riboflavin and ultraviolet light (R + UV) can reduce SARS-CoV-2 infectivity in human plasma and whole-blood products while maintaining blood product quality. The CSU team aimed...
Lensless Camera Uses Fresnel Zone Aperture, Incoherent Illumination to Improve Images
BEIJING, June 1, 2020 — To reduce noise in a thin, lensless camera, researchers at Tsinghua University and MIT built an imaging system with a Fresnel zone aperture (FZA). In addition to introducing a Fresnel optical element into the camera, the researchers used a...
Using Deep Learning, Researchers Automate UAV-Based Land Mine Detection
BINGHAMTON, N.Y., May 29, 2020 — Researchers at Binghamton University, who previously developed a method for detecting “butterfly” land mines using low-cost, commercial drones equipped with multispectral and infrared cameras, are now focusing on automated detection of...
Avalanche Photodiode Is High-Power and Eye-Safe for Lidar
CHARLOTTESVILLE, Va., May 28, 2020 — A low-noise avalanche photodiode (APD) for 2-μm detection, developed by engineers at the University of Virginia (UVA) and the University of Texas-Austin (UT-Austin), could provide high-power, eye-safe light imaging, detection, and ranging for...
Researchers Define New Law in Laser Physics Via Pulsation
SYDNEY, May 28, 2020 — Scientists at the University of Sydney Institute of Photonics and Optical Science have developed a new type of laser that can deliver high amounts of energy in short bursts, with potential applications in eye and heart surgery or the engineering of...
Lattice Light-Sheet Microscopy Tool Supports 4D Data Analysis
CHICAGO, May 28, 2020 — Researchers at the University of Chicago have designed a multidimensional imaging analysis pipeline for lattice light-sheet microscopy (LLSM). They set out to study T-cell function using high-dimensional microscopy, but then identified the need for...
Saturable Plasmonic Metasurfaces for Laser Mode Locking
DIJON, France, May 27, 2020 — Researchers from France, China, and Brazil have developed plasmonic metasurfaces that provide an efficient saturable absorption that can be tuned with the polarization of light. Researchers from the Laboratoire Interdisciplinaire Carnot de...
US Navy Demonstrates Solid-State Laser Capable of Disabling Aircraft
PEARL HARBOR, Hawaii, May 27, 2020 — The U.S. Navy amphibious transport dock ship USS Portland successfully disabled an unmanned aerial vehicle May 16 with a Solid-State Laser — Technology Maturation Laser Weapon System Demonstrator (LWSD). The LWSD is a high-energy laser weapon...
Discovery Could Enable Large-Scale Quantum Photonics
BRISTOL, England, May 22, 2020 — An integrated photon source with the potential to deliver large-scale quantum photonics has been developed by physicists at the University of Bristol. Integrated quantum photonics is a promising platform for developing quantum technologies due to...
Active Substance Optically Manipulates Component of Cytoskeleton
JENA, Germany, May 22, 2020 — An international research team from Jena, Munich, and New York has used photopharmacology — the use of light to switch the effect of drugs on and off — to control actin, a component of cells that was previously considered inaccessible....
Metamaterial Can Change Optical Properties, Become Invisible or Reflective in IR Spectrum
ST. PETERSBURG, Russia, May 21, 2020 — Researchers at ITMO University and the University of Exeter have developed a metamaterial capable of changing its optical properties without any mechanical input. The new metamaterial could improve the reliability of complex optical devices while...
Inventing the World’s First Continuous-Wave Laser
MURRAY HILL, N.J., May 21, 2020 — In December 1960, the helium-neon (HeNe) laser, the first laser to generate a continuous beam of light at 1.15 μm, was demonstrated by Ali Javan, William Bennett Jr., and Donald Herriott of Bell Labs. In the 60 years following its invention, the...
UCI Physicists Exploring Use of Blu-Ray Disc Lasers to Kill COVID-19
IRVINE, Calif., May 21, 2020 — A team led by physicist Chris Barty of the University of California, Irvine is researching the use of diodes from Blu-ray digital videodisc devices as deep-ultraviolet laser photon sources to rapidly disinfect surfaces and indoor air. Barty, UCI...
Research Group Develops Thermo-Photoluminescence for Rapid Imaging and Measurement
SICHUAN, China, May 20, 2020 — Today, the most common optical technique for imaging and measurement of thermal conductivity of semiconductors is time-domain thermoreflectance (TDTR), in which a femtosecond pump pulse is used to heat up the sample through a metal film. While...
Researchers Develop Glacier Monitoring Tool Using Optical Fibers
BERN, Switzerland, May 20, 2020 — Swiss National Science Foundation professor Fabian Walter has come up with a new glacier monitoring tool in the form of optical fibers. The fibers are capable of monitoring entire glaciers. Due to seismometers’ difficulty being installed in...

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