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(9,094 items)
Research & Technology News
Nicolaas Bloembergen, Winner of Nobel Prize in Physics, Dies at 97
TUCSON, Ariz., Sept. 13, 2017 — Dutch-born optics pioneer and Nobel Prize winner Nicolaas Bloembergen died on Sept. 5 in Tucson, Ariz. He was 97. The cause of death was cardiorespiratory failure. Dr. Bloembergen, who spent more than 40 years at Harvard University, made lasting contributions to the development of the laser and was a pioneer in the field of nuclear magnetic resonance spectroscopy. Dr. Bloembergen shared the 1981 Nobel Prize in Physics with Arthur L. Schawlow of the United States and Kai M. Siegbahn
Doppler Lidar Could Aid Weather Forecasting, Aircraft Safety
HEFEI, China, Sept. 12, 2017 — A dual-frequency direct detection Doppler LiDAR system could offer a simplified yet robust way to accurately measure wind speed. The detailed, real-time wind measurements provided by the system could help scientists better understand how hurricanes...
Photoacoustic Imaging Technique Measures Periodontal Health
LA JOLLA, Calif., Sept. 12, 2017 — Using squid ink as a contrast agent for a photoacoustic ultrasound, researchers have developed a dental imaging method for assessing gum health that is non-invasive, comprehensive and accurate. The photoacoustic method can image the entire pocket...
3D Printing Technique Makes Degradable Biomaterials
PROVIDENCE, R.I., Sept. 11, 2017 — A stereolithographic technique has been developed for making 3D printed biomaterials that can undergo controlled degradation. This technique uses non-covalent (ionic) crosslinking and could potentially enable the fabrication of adaptive and...
High-Speed Quantum Memory Retrieves Photons on Demand
BASEL, Switzerland, Sept. 11, 2017 — A quantum memory that offers relatively fast and simple retrieval could someday be used for building a “quantum Internet.” The technology stores photons in a gas of rubidium (RB) atoms and uses a laser to control the storage and...
Novel STEM for 3D Imaging Improves 3D Visualization of Curvilinear Nanostructures
LAUSANNE, Switzerland, Sept. 8, 2017 — Scientists have developed a scanning transmission electron microscopy (STEM) method that generates fast and reliable 3D images of curvilinear structures from a single sample orientation. This STEM method can acquire images in a single shot, making...
Smartphone App Objectively Assesses Brain Injuries in The Field
SEATTLE, Sept. 8, 2017 — A smartphone app that detects concussion and other traumatic brain injuries could be used to determine whether someone — whether a football player, a soldier in battle, or an elderly person who has fallen — should be further assessed for...
Ultrapure Green Light from Perovskite Could Enrich Next-Gen Displays
ZURICH, Sept. 7, 2017 — An ultra-thin LED, as bendable as a sheet of paper and able to emit pure green light, has been developed using nanomaterials and simple room-temperature processes. Until now high-temperature processes have been required to produce pure light using...
2D Material’s High Tunability Could Augment Optoelectronics Applications
BERKELEY, Calif., Sept. 7, 2017 — Research into a 2D material has revealed information about its tunability and band gap, that could help scientists to isolate, enhance and manipulate its most desirable qualities. Potential applications for atomically thin 2D materials range from...
Natural Branding, Laser Marking for Organics
Sep 7, 2017 — The organic food business is experiencing a period of rapid economic growth as people around the globe seek natural food that’s better for them and for the environment. Eosta, an international distributor of fresh organic fruits and...
Optogenetics Used to Control Interorganellar Communication
COLLEGE STATION, Texas, Sept. 6, 2017 — Researchers are using optogenetics to tune communication between organelles within living cells. The optogenetics tools are being used to control the proteins that form the bridge between organelles, and to govern the length of the bridge at the...
Metasurface-Coated Waveguides Reduce Crosstalk
STATE COLLEGE, Pa., Sept. 5, 2017 — Engineers have developed a conformal metasurface coating that can simultaneously control diverse optical properties of dielectric waveguides, including mode confinement, polarization, scattering signature and crosstalk. The two-layer coating can...
Subwavelength THz Could Improve Image Resolution, Accelerate Imaging Speed
EXETER, England, Sept. 5, 2017 — A terahertz (THz) imaging technique that is compatible with adaptive and compressive sensing algorithms has been developed and has demonstrated image reconstruction at highly subwavelength dimensions. Using a near-field approach to THz imaging,...
Enhancing Sensitivity at Higher-Order Exceptional Points
ORLANDO, Fla., Sept. 1, 2017 — A state of exceptional sensitivity, formed when a third nanoparticle is added to an optical microcavity already containing two light scatterers, is being studied by researchers as the potential basis for a system that could detect objects at the...
Laser Cavity Reveals Fundamental Physics Driving Its Optical Responses
ORLANDO, Fla., Sept. 1, 2017 — The optical response of an externally probed laser cavity was monitored before and after gain clamping to reveal the underlying mechanisms of the cavity’s response. The research provided a unique window into fundamental physics and optical...
Optical Approach Finds Weak Spots in Jet Thermal Coating
EDINBURGH, Scotland, Aug. 29, 2017 — A strain-measurement technique uses optical analysis to reveal weak areas in the ceramic thermal barrier coatings that protect jet engine turbines from high temperatures and wear. This technique could be used to predict coating lifetime and could...
ThermalTracker Software Identifies Offshore Animals in Thermal Video
RICHLAND, Wash., Aug. 29, 2017 — Thermal imaging is being used to automatically track and categorize birds and bats, helping to protect wildlife near offshore wind turbines and supporting responsible wind farm siting and operations. ThermalTracker, an open source software package...
Rice University Researchers Pattern Laser-Induced Graphene on Wood
HOUSTON, Aug. 28, 2017 — A thin film of laser-induced graphene (LIG) has been patterned on a block of pine using CO2 laser scribing. Previous iterations of LIG have been made by heating the surface of a sheet of polyimide with a laser. Turning wood into graphene opens the...
Flexible, Fabric-Based OLEDs Unveiled
DAEJEON, South Korea, Aug. 28, 2017 — Researchers have developed fabric-based OLEDs that show high luminance and efficiency while maintaining the flexibility of the fabric. These fabrics could lead to soft wearable displays that bend and move with the wearer. Silicone-based LED jackets,...
Quantum Dots Provide Basis for Tumor Imaging System
LA JOLLA, Calif., August 25, 2017 — A novel proof-of-concept nanosystem for the visualization of tumors generates bright tumor signals by delivering near-infrared quantum dots (QDs) to cancer cells without any toxic effects. The QDs are delivered intravenously into extravascular tumor...
Ottawa Displays High-Dimensional Quantum Encryption
OTTAWA, Ontario, Aug. 25, 2017 — A quantum-secured message containing more than one bit of information per photon has been sent through the air above the city of Ottawa. According to scientists, this is the first time high-dimensional quantum encryption has been demonstrated with...
CQDs Boost Photocatalytic Activity for Environmental, Energy Use
SHANGHAI, Aug. 24, 2017 — A novel approach to carbon quantum dot (CQD) use focuses on the research and design of CQD-modified photocatalysts, specifically on the introduction of CQDs into Bi2WO6 photocatalysts. When tested, the CQD photocatalyst demonstrated strong...
Optical Wells for Super-Photons Could be Forerunner of Quantum Circuits
BONN, Germany, Aug. 24, 2017 — Experiments with a “super-photon,” also known as a Bose-Einstein condensate and formed when thousands of photons merge with each other, led scientists to create an optical well that could lead to a novel approach to variable...
Low-Energy Laser Pulse Generates Relativistic Electron Beams
COLLEGE PARK, Md., Aug. 23, 2017 — Relativistic electrons driven by low-energy, ultrashort mid-infrared (MIR) laser pulses have been produced, according to researchers for the first time. Researchers used long-wavelength low energy femtosecond (fs) laser pulses to study relativistic...
Levitated Optomechanics Could Lead to Advances in Sensing Technology
ROCHESTER, N.Y., Aug. 23, 2017 — A study supported by the Office of Naval Research (ONR) will employ the emerging field of levitated optomechanics to investigate precision quantum sensing technologies. Laser trapping techniques and quantum mechanics will be used to test the limits...
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