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Research & Technology News
Atomically Thin Light-Emitting Device Could Advance 'Invisible' Displays
BERKELEY, Calif., March 27, 2018 — Engineers have built a bright-light emitting device that is millimeters wide and fully transparent when turned off. The light emitting material in the device is a monolayer semiconductor that is just three atoms thick. Researchers at University of California-Berkeley used LED technology on monolayer semiconductorsto enable the design of devices that can be scaled from sizes smaller than the width of a human hair up to several millimeters. The thickness of the device can be minimal while
New Lens Provides Nanometer-Scale Resolution
HAMBURG, Germany, March 27, 2018 — A multilayer pair of materials, tungsten carbide and silicon carbide, was used to prepare high-efficiency, high-numerical aperture (NA) multilayer Laue lenses (MLLs). In a series of studies, Saša Bajt of Deutsches Elektronen-Synchroton (DESY)...
Semi Material Used for Secure Quantum Communications
MOSCOW, March 26, 2018 — Use of single photons as carriers for quantum bits could enable reliable security during quantum data transmission. Researchers have found that an existing material could be used to build a system for the reliable generation of single photons under...
Imaging System Navigates Fog Better Than Human Vision
CAMBRIDGE, Mass., March 23, 2018 — In what could be a boon for autonomous vehicle technology, a system has been developed that can produce images of objects enveloped in fog too thick for human vision to penetrate. Under actual fog conditions, researchers from Massachusetts Institute...
Ultrathin Materials Combo in QD Enables Tunable Quantum Systems
VIENNA, March 21, 2018 — A new type of quantum dot (QD) has been developed that allows for more accurate and more widely tunable energy levels of confined electrons. The advance in QD technology combines graphene (a conductive single atomic layer of carbon atoms) and...
Point-of-Care Device Could Improve Thyroid Cancer Screening
BARCELONA, Spain, March 21, 2018 — A team of international researchers developed a point-of-care device that could enable consistent and cost-effective screening for thyroid nodules. This novel device builds on the current ultrasound standard with a hybrid optics/ultrasound probe....
Photonic Hook Could Enable Optical Manipulation of Nanoparticles
ST. PETERSBURG, Russia, March 20, 2018 — A curved photonic nanojet, called a photonic hook, was created using an asymmetric cuboid, formed by appending a triangular prism to one side of a cube. Using numerical methods, scientists showed that the trajectory of a probe nanoparticle in the...
Plasmon Findings Could Pave-Way for Carbon-Based NIR Optoelectronic Devices
HOUSTON, March 19, 2018 — Researchers’ observation of gate-controlled quantum plasmons in aligned carbon nanotubes could pave the way for the development of carbon-based NIR optoelectronic devices and enable researchers to study the collective dynamic response of...
Laser Simulations Model Impact of Nuclear Explosions on Asteroids
MOSCOW, March 19, 2018 — Researchers constructed miniature asteroids and blasted them with a laser to model the impact of a nuclear explosion on an asteroid threatening to collide with Earth. The research team showed that a brief laser pulse aimed at a miniature replica of...
Ultrashort Laser Pulses Make Greenhouse Gas Reactive
BONN, Germany, March 16, 2018 — A highly reactive form of carbon dioxide (CO2, created using ultrashort laser pulses, could help reduce dependence on nonrenewable energy sources. Scientists from the University of Bonn used a so-called iron complex, whose center contained a...
Neutron Interferometer Uses Silicon Lenses to Probe Materials
GAITHERSBURG, Md., March 16, 2018 — Scientists have demonstrated that a three phase-grating moiré neutron interferometer in a neutron beam could be a robust candidate for large area interferometry applications and for the characterization of materials. The technique would...
Laser-Heated Nanowires Produce Microscale Fusion
FORT COLLINS, Colo., March 15, 2018 — A dense fusion environment was created by irradiating arrays of nanowires using joule-level pulses from a compact, ultrafast laser. The irradiation of ordered nanowire arrays with femtosecond pulses created ultrahigh energy density plasmas in which...
Holographic Waveguide HUD Touts Larger Eye Box for Enhanced Display
TUCSON, Ariz., March 13, 2018 — Researchers demonstrated a functional prototype head-up display (HUD) that uses optical holographic elements to achieve an eye box substantially larger than what is available without the holographic component. Current head-up displays have a small...
Optical Tool Uses Fluorescence to Detect Metabolic Changes
MEDFORD, Mass., March 12, 2018 — An optical tool that can read metabolism at subcellular resolution could be used to identify specific metabolic signatures that could be indicative of disease. The method detects functional and structural metabolic biomarkers noninvasively using...
High-Capacity Signal Transmission Could Boost Aptitude of Fibers in Use Capacity
NOZAY, France, March 12, 2018 — Researchers report the real-time, bidirectional transmission of 78 interleaved, 400 gigabit per second (Gb/s) channels with a 31.2 terabit per second (Tb/s) fiber capacity. The C-band signals were transmitted over a single, 90-kilometer-long...
Ultrafast Measurement Technique Demonstrates Beginning of Laser Pulses
TAMPERE, Finland, March 9, 2018 — Researchers have demonstrated how laser pulses emerge from noise, then collapse and oscillate before stabilizing. The discovery was made possible by real-time measurement of the laser’s temporal intensity with sub-picosecond resolution and the...
Polarization State Is Characterized on Attosecond Scale
BERLIN, March 8, 2018 — Researchers have characterized the exact polarization state of light on the attosecond timescale. This discovery could facilitate the use of short, rotating pulses of light to learn more about the inner structure of materials. Extremely short pulses...
Superresolution Imaging System Generates Segmented Fossil Images
PRINCETON, N.J., March 8, 2018 — Using an industrial grinder and superresolution camera, geoscientists have created 3D digital images of rock samples that can be viewed from multiple angles. Algorithms allow the computer to segment the images without human bias. Scientists used...
Lens-on-MEMS Technology Could Lead to More Compact Optical Devices
LEMONT, Ill., March 7, 2018 — In a collaboration between Argonne National Laboratory and Harvard University, researchers built a metasurface-based lens on top of a MEMS platform, creating a “lens-on-MEMS” device that focuses light in the mid-IR spectrum. The...
Light-Emitting Electrochemical Cells Become Efficient and Bright
UMEÅ, Sweden, March 7, 2018 — Researchers from Umeå University, Linköping University, and Swedish company LunaLEC AB have developed light-emitting electrochemical cells (LECs) that emit strong light at high efficiency. Using a systematic combination of experiments and...
Spectroscopy, Microscopy Allow Precise Imaging of Optical Frequencies
BOULDER, Colo., March 6, 2018 — An imaging technique combines spectroscopy with high-resolution microscopy to produce rapid, precise measurements of quantum behavior in an atomic clock. Physicists believe the technique could improve atomic clock precision and provide a path toward...
Microscope Provides Precise 3D Imaging of Thick Mammalian Cells
STANFORD, Calif., March 5, 2018 — A new microscope produces 3D nanoscale images of mammalian cells in their entirety. Because the axial positions of the single emitters are encoded in the shape of each single-molecule image rather than in the position or thickness of the light...
Chip-Scale Dual-Comb Spectroscopy Could Be Used in the Field
NEW YORK, March 5, 2018 — A research team has put two frequency comb generators on a single millimeter-sized chip, miniaturizing the dual comb and thus making it portable enough to perform sensing and spectroscopy in field environments in real time. Researchers from Columbia...
3D-Printed Hyperspectral Imagers Designed for UAVs
LONGYEARBYEN, Norway, March 1, 2018 — Researchers used 3D printing and low-cost parts to create an inexpensive hyperspectral imager that is light enough to use onboard drones. The visible-wavelength hyperspectral imager (HSI) weighs less than half a pound and, according to researchers,...
Attosecond Pulses From Extreme UV Light Source Break Into Atomic Interior
MUNICH, March 1, 2018 — To observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very bright, and the photons that are delivered must have sufficiently high energy. This combination of...
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