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Tuning Quantum States of Matter Using Ultrafast Photonics AMES, Iowa, Aug. 23, 2019 — Researchers at Iowa State University, led by professor Jigang Wang, are using quantum terahertz spectroscopy to explore and control quantum states of matter. The researchers have announced three discoveries based on their studies. The first, reported in Nature Materials, describes how ultrafast pulses of photons — pulsed at trillions of cycles per second — can switch on a state of matter hidden by superconductivity. They demonstrated a tuning knob for switching on exotic,
Harnessing Light-Sound Interactions on a Single Chip SYDNEY, Aug. 21, 2019 — A growing group of scientists is adapting the phenomenon known as Brillouin scattering to a new generation of integrated circuits for 5G and broadband networks, sensors, satellite communication, radar systems, and defense. While the feedback that...
Naturally Occurring Vibrations in Artificial Atoms Could Be Used to Build Quantum Sensors BRISTOL, England, Aug. 19, 2019 — The discrete nature of photons that are emitted from individual atoms ensures low fluctuations in brightness, as only one photon is emitted at a time. Scientists believe this property could be useful in developing future quantum technologies where...
Suppression of Backscattering Could Improve Optical Data Transmission CHAMPAIGN, Ill., Aug. 14, 2019 — To control backscattering and reduce energy loss during optical data transmission, researchers from the University of Illinois at Urbana-Champaign exploited the interaction between light and sound waves. They were able to achieve robust light...
Ultrathin Optical Waveguide Channels Light Within Three Layers of Atoms LA JOLLA, Calif., Aug. 13, 2019 — Engineers at the University of California, San Diego, have developed a waveguide that is more than 10,000 times thinner than a typical optical fiber and about 500 times thinner than on-chip optical waveguides in integrated photonic circuits. The...
Light Controls the Electrical Properties in Quantum Materials PHILADELPHIA, Aug. 7, 2019 — A new study from the University of Pennsylvania reports that Weyl semimetals, a class of quantum materials, have bulk quantum states whose electrical properties can be controlled using light. This work could contribute to a way to engineer and...
Natural-Scale Snail Robot Is Powered by Light WARSAW, Poland, Aug. 5, 2019 — A soft snail robot, developed by a team at the University of Warsaw with colleagues from Xi'an Jiaotong-Liverpool University, is capable of mimicking the adhesive locomotion of snails and slugs on a natural scale. The bioinspired robot is made from...
Realizing Quantum Light Sources Via Site-Selective Defect Engineering MUNICH, Aug. 5, 2019 — Someday, when photons can be used to transmit information at the speed of light, quantum light sources, connected with quantum fiber optic cables and detectors, will be needed. An international team led by physicists at the Technical University of...
Nanoscale Photon Diode Could Further Next-Gen Computing Technologies STANFORD, Calif., July 29, 2019 — Researchers at Stanford University are designing a way to make a photon diode, a device that allows light to flow in only one direction, small enough for consumer electronics. They have tested their design with computer simulations and calculations...
Single-Layer OLED Design Could Lead to Printed Displays MAINZ, Germany, July 23, 2019 — An efficient, stable OLED based on a single layer of a neat, thermally activated, delayed fluorescence emitter has been demonstrated by a research group at the Max Planck Institute for Polymer Research (MPI-P). The first prototype of the...
Researchers Confirm Strong Magneto-Optical Resonance in Graphene GENEVA, July 22, 2019 — The interaction between graphene and light suggests that graphene could be used to control infrared (IR) and terahertz (THz) waves. Researchers from the University of Geneva (UNIGE) and the University of Manchester have demonstrated an efficient way...
Data-Based Design Method for Metamaterials Uses Artificial Intelligence POHANG, South Korea, July 19, 2019 — The process for designing metamaterials could be improved by using data-driven approaches based on deep learning, according to researchers at Pohang University of Science and Technology (POSTECH). The researchers used a deep-learning-assisted...
Nanostructured Glass Is Based on Butterfly Wing PITTSBURGH, July 16, 2019 — Glass for displays, tablets, laptops, smartphones, and solar cells needs to allow light to pass through, but could benefit from a surface that repels water, oil, and other liquids. Researchers from the University of Pittsburgh (Pitt) created a new...
OLED Efficiency Is Improved by Freeing Trapped Photons DRESDEN, Germany, July 15, 2019 — An international research team led by Technische Universität Dresden (TU Dresden) has found a way to significantly boost OLED efficiency by extracting the trapped photons from OLEDs, which account for about 20% of the light particles that OLEDs...
Low-Noise Avalanche Photodiode Could Advance Data Communications CARDIFF, Wales, July 10, 2019 — A new development in semiconductor technology, leading to an ultrafast, highly sensitive avalanche photodiode (APD) with extremely low excessive noise, could improve data transmission rates and/or enable longer transmission distances. Cardiff...
Smart Glass Could Offer a New Route to Machine Vision MADISON, Wis., July 9, 2019 — A new type of smart glass, developed by a team at the University of Wisconsin-Madison, leverages optical reflection to recognize images without requiring sensors, circuits, internet connection, or external power sources. Everything needed for image...
Metasurface-Based Camera Could Simplify Polarization Imaging for Vision Systems CAMBRIDGE, Mass., July 5, 2019 — Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a compact, portable camera that can image polarization in a single shot. The miniature camera — about the size of a thumb —...
Gelest Acquires Bimax MORRISVILLE, Pa., July 1, 2019 — Gelest Inc., a manufacturer and supplier of silicones, organosilanes, and metal-organics for advanced technology markets, has acquired Bimax, a manufacturer and marketer of specialty monomers and polymers. Bimax will continue to operate under the...
Worldwide Solar Energy Model Provides Historical PV Performance Data AARHUS, Denmark, July 2, 2019 — A model for how much energy photovoltaic (PV) systems produce worldwide has been developed by researchers at Aarhus University. The researchers collected 38 years of global solar radiation, weather, and temperature data with a spatial resolution of...
Nanowires Can Be Tuned to Range of Wavelengths for Optoelectronics DRESDEN, Germany, July 2, 2019 — A research team at Helmholtz-Zentrum Dresden-Rossendorf (HZDR), in collaboration with researchers at Technische Universität (TU) Dresden and Deutsches Elektronen-Synchrotron (DESY) in Hamburg, has produced nanowires with operating wavelengths...
‘Self-Healing’ Coating Minimizes Lead Leakage from Perovskite Cells ONNA, Japan, June 25, 2019 — Adding a protective layer of epoxy resin to the top of a perovskite solar cell (PSC) can significantly reduce the amount of lead that the cell discharges into the environment, researchers at Okinawa Institute of Science and Technology (OIST)...
Tiny Light Box Made of TMDC Material Merges States of Light, Matter GOTHENBURG, Sweden, June 24, 2019 — A nanosize light box, built from stacked atomically thin material, has demonstrated the ability to capture and amplify light and link light to matter at the nanolevel. The light box, created by researchers at Chalmers University of Technology, makes...
Nonlinear Optical Process Could Improve Solar-Powered Desalination HOUSTON, June 20, 2019 — Researchers at Rice University have improved the efficiency of their solar-powered desalination system by more than 50% by concentrating sunlight into “hot spots.” Using the same amount of light, the researchers were able to increase the...
Quantum Dot Microscope Can Measure Electric Surface Potentials of Single Atoms JÜLICH, Germany, June 18, 2019 — A new scanning quantum dot microscopy method can measure the electric potential of a sample at atomic accuracy. It was developed by a team from Forschungszentrum Jülich, working with researchers from two other institutions. The new technique...
Light Energy and Biomass Can Be Converted to Fuel and Hydrogen DALIAN, China, June 17, 2019 — A team at the Dalian Institute of Chemical Physics of the Chinese Academy of Sciences, led by professor Feng Wang, has developed a process for using light energy to drive the use of downstream biomass products to produce hydrogen and diesel fuel...
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