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RESEARCH & TECHNOLOGY NEWS
Cuprous Iodide Film Shows Promise for Semiconductors, Optoelectronics SAITAMA, Japan, April 9, 2021 — Physicists from RIKEN have taken a step to enhance semiconductor performance, developing a single-crystal thin film of cuprous iodide. The film is atomically flat and free of any defects. Conventional approaches for fabricating thin films of cuprous iodide without any impurities typically necessitate depositing the film from a solution. Using cuprous iodide, however, which is a halide compound and a highly effective conductor and is stable above room temperature, a solution-based process
Graphene Smart Surfaces Tuned for the Visible Spectrum MANCHESTER, England, April 9, 2021 — Work from the University of Manchester outlines applications for smart surface technology that covers the entire electromagnetic spectrum, including the visible light region. Applications for the new optical devices range from next-generation...
Reverse-Tapering Approach Links Structurally Dissimilar Optical Fibers SHANGHAI, April 9, 2021 — A team of researchers from Fudan University has achieved robust mode matching between structurally dissimilar optical fibers, using a “reverse-tapering” approach to deliver ultralow-loss and high-strength fusion splices between standard...
Polymer Molecules Fluoresce After Chemical Adjustments ZURICH, April 8, 2021 — ETH Zurich researchers have introduced a method that relies on chemical adjustments occurring in fluorescent organic polymer molecules to generate a broad palette of color. The approach is an alternative to mixing different molecules to achieve...
Single-Pixel Detector Classifies Images Using Diffractive Optical Network LOS ANGELES, April 8, 2021 — A single-pixel machine vision framework leverages deep-learning designed optical networks to bypass the need for an image sensor-array or digital processor. The system, developed in the lab of UCLA Chancellor’s Professor Aydogan Ozcan, paves...
Simple Laser Delivers High-Dimensional, Quantum-Like Classical Light CHANGCHUN, China, April 7, 2021 — An international team from China and South Africa used a laser to create an arbitrary dimensional light that team members characterized as “quantum like.” Using a simple laser commonly available in university teaching labs, the team...
Broadband MIR Source Facilitates Fiber, Fiber Optics-Based Sensing TOKYO, April 6, 2021 — A light source that generates a highly stable broadband mid-infrared (MIR) beam in the wavelength range of 2.5 to 3.7 μm and that, in testing, maintained its full brightness due to its high beam quality supports the simplification of fiber...
EPic Team Thins Down Terahertz Source, Opens Doors in IoT, Data Communication BRIGHTON, England, April 6, 2021 — University of Sussex physicists, led by Marco Peccianti, professor and director of the Emergent Photonics (EPic) Laboratory, developed an extremely thin, large-area semiconductor surface source of terahertz, composed of just a few atomic layers and...
Smart Glass Design Saves Power KASSEL, Germany, April 6, 2021 — A design from researchers at the University of Kassel aims to decrease energy consumption for lighting and temperature technologies. The smart system uses micro-optical-electro-mechanical (MOEM) micromirror arrays to regulate and steer sunlight. The...
The Role of Cavitation in Glass Fracturing BEIJING, April 2, 2021 — Wang Wei Hua’s group at the Institute of Physics of the Chinese Academy of Sciences investigated the role of cavitation in the fracture behavior of different types of glass in a study that could prove useful in developing stronger versions of...
Laser Cools Antimatter to Near Absolute Zero VANCOUVER, British Columbia, April 1, 2021 — A custom-built laser has cooled antimatter to near absolute zero. The work, carried out by researchers with the CERN-based ALPHA collaboration, holds significant implications for the study of antimatter and its properties, and of foundational...
Gold Nanoparticle Plasmon Coupling Illuminates Thermal Sensing Possibilities RALEIGH, N.C., March 31, 2021 — Researchers from North Carolina State University have described a method for achieving desirable optical properties by stretching shape-memory polymers embedded with gold nanoparticle clusters so as to alter their plasmon-coupling capabilities. The...
Intravascular Imaging Technique Characterizes Key Heart Attack Risk BOSTON, Mass., March 30, 2021 — A Massachusetts General Hospital-based research team has introduced an intravascular laser speckle imaging (ILSI) technique that showed the ability to identify the distinct mechanical features of plaques that are most apt to rupture under the...
Optical Fiber Production Method Reduces Photonic Chip Cost, Errors EINDHOVEN, Netherlands, March 30, 2021 — Research from Eindhoven University of Technology has shown an improved method of constructing optical fiber arrays, which could significantly improve efficiency and lower the cost of developing photonic chips. The research specifically addresses...
Atomic Lattice Excitation Yields Understanding of Quantum Dots’ Limits MENLO PARK, Calif., March 29, 2021 — At low energy levels, quantum dots are able to absorb light and convert it to a different color at nearly 100% efficiency. At higher excitation energies required for brighter screens and other technologies, the level of efficiency drops...
Light Delivers Hydrogen from Nonphotosynthetic Microorganisms LISBON, Portugal, March 29, 2021 — A team in Portugal has introduced a method for the sustainable conversion of solar energy into hydrogen, relying on biohybrid systems — combinations of nonphotosynthetic materials, bacteria, and semiconductor nanoparticles. The ability of...
DNA Origami Supports Applications In and Beyond Life Sciences REGENSBURG, Germany, March 26, 2021 — A European research team developed a dye- and DNA programming-based approach for counting molecules present within individual complexes. The approach supports biomedical and life sciences applications, as well as those involving OLEDs, solar cells,...
Fabrication Method Paves Way for Large-Scale Perovskite Production LOS ALAMOS, N.M., March 26, 2021 — A simple, synthetic process for fabricating stable perovskite solar cells has overcome a preventative challenge to large-scale production, and, as a result, to product commercialization. A team from Los Alamos National Laboratory and National Taiwan...
Optical Fiber Brings Universal Quantum Computing Closer GAITHERSBURG, Md., March 25, 2021 — Physicists at the National Institute of Standards and Technology (NIST) measured and controlled a superconducting qubit using optical fiber, rather than metal electrical wires. The work moves toward a universal quantum computer capable of solving...
Microscopy Method Resolves Fluorescent Molecules at Nanometer Scale GÖTTINGEN, Germany, March 24, 2021 — Researchers led by Stefan Hell at the Max Planck Institute (MPI) for Biophysical Chemistry and the Heidelberg-based MPI for Medical Research have developed a light microscopy method, MINSTED, that is able to resolve fluorescently labeled details...
OR-PAM, Multiparameter Image Processing Method Advance Subcellular Imaging Possibilities HONG KONG, March 23, 2021 — City University of Hong Kong researchers developed a multiwavelength optical resolution photoacoustic microscopy (OR-PAM) system based on a single laser source. The system enables simultaneous multicontrast imaging of hemoglobin concentration, blood...
Organic Electrochromic Material Changes Colors Rapidly, Reversibly MUNICH, March 23, 2021 — Ludwig-Maximilians-Universität researchers developed an electrochromic thin-film material that, by changing colors rapidly, is poised to feature in the design of smart windows, solar energy production/acquisition, and automotive applications....
Bonn Team’s Technology Brings Quantum Networks Closer to Reality BONN, Germany, March 22, 2021 — Researchers from the University of Bonn demonstrated quantum entanglement between a stationary qubit and a photon with direct coupling to an optical fiber. The work represents a major step toward the realization of quantum networks and, from them,...
Stanford Team Develops Self-Cooling Silica Fiber Laser STANFORD, Calif., March 22, 2021 — A Stanford University research team developed a self-cooling laser based on a silica fiber architecture. By overcoming the need for external cooling, such as with a water-based cooling system, the design charts a course for future laser-based...
Light-Controlled Enzymes Show Potential in Medicine, Industry SÃO PAULO, March 19, 2021 — Research conducted at the University of São Paulo’s Chemistry Institute demonstrated the utility of near-infrared and infrared light for use as catalysts in the control of enzymes. The work holds implications for the noninvasive...
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