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Research & Technology News
Gas Sensors Transfer Easily to Different Substrates Without Degrading Performance
ATLANTA, Nov. 10, 2017 — A transfer technique based on thin layers of boron nitride could allow high-performance gallium nitride gas sensors to be grown on sapphire substrates and then transferred to metallic or flexible polymer support materials. The technique could facilitate the production of low-cost wearable, mobile and disposable sensing devices for a wide range of environmental applications. Researchers from Georgia Institute of Technology began by growing monolayers of boron nitride on two-inch sapphire
Microfluidic Platform Performs Screens of Perovskite Nanocrystals
RALEIGH, N.C., Nov. 8, 2017 — ; An automated microfluidic technology has been developed containing a spectrographic monitoring module that collects both fluorescent and absorption data. The module can move along the microfluidic channel, collecting data along the way. The...
Complex States of Light Generated via Metasurface
CAMBRIDGE, Mass., Nov. 7, 2017 — Researchers have designed a method for converting arbitrary spin angular momentum (SAM) states of light into total angular momentum states. This method is characterized by the superposition of independent orbital angular momentum (OAM), and could...
Light-Activated Probe Could Aid Alzheimer’s Drug Development
HOUSTON and CORAL GABLES, Fla., Nov. 6, 2017 — Researchers have developed a probe that lights up when it binds to a misfolded amyloid beta peptide (Aβ), enabling footprinting of this protein, which is a suspected cause of Alzheimer’s disease. The probe was able to identify a specific...
Optical Solution Addresses Interconnect Bottleneck on Silicon Chips
CAMBRIDGE, Mass., Nov. 3, 2017 — A combination light emitter and detector device that is compatible with silicon could help mitigate communications delays resulting from signal leakage between microchip components. The device is made from molybdenum ditelluride (MoTe2), an...
Additive Manufacturing of Titanium Aircraft Parts Uses Direct Metal Laser Sintering
TOMSK, Russia, Nov. 3, 2017 — An additive manufacturing technology that uses direct metal laser sintering enables the printing of titanium aircraft parts with a modified surface layer. Physicists from Tomsk Polytechnic University (TPU) are currently working to create...
One-Step 3D Laser Printing of Catalysts Opens Path to Faster Production of Custom Structures
AMES, Iowa, Nov. 2, 2017 — A 3D laser printing process that creates a chemically active catalytic object in a single step has opened the door to more efficient ways to produce catalysts for complex chemical reactions in a wide scope of industries. While 3D printing has found...
NASA Set to Use ‘Lobster-Eye’ Optics to Locate Source of Cosmic Waves
GREENBELT, Md., Nov. 1, 2017 — A novel optics system that mimics the structure of a lobster’s eyes could be employed on the International Space Station to enable NASA to precisely locate, characterize and alert other observatories about the source of gravitational waves....
Control of Photon-Atom Interaction Could Enhance Metrology, Imaging and Inspection Systems
SINGAPORE, Nov. 1, 2017 — Researchers used a super-resolution imaging technique to strengthen photon-atom interaction, revealing a way to boost interaction between photons and a single atom that could be useful in quantum computing and metrology. Using a lens to focus...
Spectrometer Uses Silicon Photonics to Efficiently Monitor Gas Leaks
YORKTOWN HEIGHTS, N.Y., Oct. 31, 2017 — ; A chip-based spectrometer that is smaller than a dime has demonstrated the ability to detect methane in concentrations as low as 100 parts-per-million. The spectrometer leverages silicon photonics technology to realize a compact, cost-effective...
Optical Fiber Used to Direct, Stabilize Random Laser
ALBUQUERQUE, N.M., Oct. 30, 2017 — An advance in laser technology combines the broad spectral features of a random laser with the spectral stability and high directionality of a traditional laser. Such an advance could enable greater use of random lasers in applications where a broad...
Single-Nanoparticle Maps Pave the Way for Better, Safer Nanotechnology
GOTHENBURG, Sweden and KONGENS LYNGBY, Denmark, Oct. 30, 2017 — A method that combines electron microscopy and optical microscopy to map individual nanoparticle responses in different situations and contexts could pave the way for better nanomaterials and safer nanotechnology. Researchers at Chalmers University...
VR Opera Hits All the Right Notes
BATH and LONDON, England and CARDIFF, Wales, Oct. 26, 2017 — This fall, visitors to venues across England will have the opportunity to experience two classic operas in virtual reality (VR). ‘Magic Butterfly’ is an immersive VR experience that reimagines scenes from Madame Butterfly and The Magic...
Ultrasmall Ink Droplets Trap Light on Photonic Crystal
CAMBRIDGE, England, Oct. 24, 2017 — A microscopic 'pen' has been developed that uses a commercially available printing technique to write structures on crystals that are small enough to trap and harness light. The use of inkjet printing in nanophotonics has so far been limited by the...
Whispering Gallery Microcavities Control Momentum of Light
CAMBRIDGE, Mass., Oct. 24, 2017 — A method to control the momentum of broadband light using whispering gallery microcavities* (WGMs) could allow greater application of integrated photonic circuits. Optical devices typically require the coupling of light between different components....
Label-Free Imaging Maps Brain Changes in Alzheimer's Mouse Model
WUHAN, China, Oct. 20, 2017 — An imaging system called cryo-micro-optical sectioning tomography (cryo-MOST) could help speed new drug development for Alzheimer’s disease by offering a better way to monitor the brain changes indicative of Alzheimer's in mouse models....
Broad Palette of Fluorescent Dyes May Advance Biological Imaging
ASHBURN, Va., Oct. 19, 2017 — To better illuminate the inner workings of cells, researchers have developed a way to adjust the properties of fluorescent dyes deliberately, resulting in an expanded palette of dyes that are bolder, brighter and more cell-permeable. Their novel...
Optical Systems Capture First Light From Colliding Neutron Stars
LIVINGSTON, La., HANFORD, Wash. and CASCINA, Italy, Oct. 17, 2017 — Scientists from the international LIGO and Virgo Scientific Collaborations have announced the detection of the bright spark of two neutron stars colliding. This event has been dubbed GW170817 because it sent ripples through space-time that reached...
Photodetector Uses Ultrathin Materials to Increase Efficiency
RIVERSIDE, Calif., Oct. 17, 2017 — A prototype developed using quantum mechanical processes could usher in a novel class of ultra-efficient photodetectors that would enable solar cells to turn the light they receive into multiple electrons. The prototype is based on the efficient...
The Optical Society Announces 2018 Fellows Class
WASHINGTON, Oct. 16, 2017 — One hundred and one (101) OSA members, representing 19 countries, have been elected to the 2018 OSA Fellows Class. Fellows are selected based on specific scientific, engineering, and technological contributions, technical or industry leadership in...
Single Photon Reveals Quantum Entanglement of 16 Million Atoms
GENEVA, Oct. 16, 2017 — Scientists have demonstrated entanglement between 16 million atoms in a crystal crossed by a single photon, reinforcing the quantum theory that entanglement can persist in macroscopic physical systems. The theoretical study of large-scale...
Camera Design Mimics Sophisticated Visual System
CHAMPAIGN, Ill., Oct. 16, 2017 — The bio-inspired design of an ultra-sensitive camera that is capable of sensing both color and polarization is based on the visual system of the mantis shrimp. The camera features a single-chip, low-power, high-resolution color-polarization imaging...
Scientists Fine-Tune Process for Making Thin Films from DNA
SEOUL, South Korea, Oct. 13, 2017 — In order to further investigate the optical properties of a DNA-based lipid complex that is widely used in current DNA thin film research, researchers developed a refinement process to minimize the relative bound water content and control binding of...
Plasmonic Platform Enhances Photocatalysis
HOUSTON and CAMBRIDGE, England, Oct. 11, 2017 — Researchers have developed a way to build multifunctional nanoscale structures using aluminum nanocrystals. The structures have an aluminum core and are dotted with even smaller metallic islands. The nanocrystals are used as a base for creating...
Holography Helps Uniquely Identify Free-Flowing Particles in the Air
MANHATTAN, Kan., Oct. 6, 2017 — Researchers used overlapping lasers to create holographic images of free flowing air particles. A green laser was used to measure light deflection; a red laser to provide a 3D image that could subjectively account for a variety of particle shapes....
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