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Research & Technology News
Machine Learning Reduces Drift in Fiber Sensors
GAITHERSBURG, Md., Oct. 6, 2022 — Using machine learning and an established mathematical model, scientists at the National Institute of Standards and Technology (NIST) developed a machine learning-based algorithm to predict drift in existing fiber Bragg grating (FBG) temperature sensors. The algorithm could be used to reduce the effect of drift without the need to purchase or develop new sensor technology. “It’s an alternative approach where you can have your cake (keep the existing technology) and eat it too
"Nonlocal" Metasurface Enables High-Performing AR Eyeglasses
NEW YORK, Oct. 4, 2022 — With conventional AR glasses, there is a trade-off in terms of quality and brightness between the external scene that a wearer actually sees and the contextual information that the wearer wants to visualize. Early solutions used multiple bulky...
Microlens Array Fabrication Method Reduces Device Costs
WUHAN, China, Oct. 4, 2022 — Though aspheric microlens arrays (AMLAs) play an important role in advanced optical sensing, communications, imaging, and other industrial and biomedical applications, the fabrication of the elements remains a challenge. Even as MLAs stepped into...
Bendable GRIN Lens Widens Imaging Potential of Endoscopic Probes
WASHINGTON, D.C., Oct. 3, 2022 — Researchers from Harvard Medical School and Mass General Brigham have created a flexible needle-like endoscopic imaging probe that can acquire 3D microscopic images of tissue. A flexible graded index (GRIN) lens, which the researchers also...
Laser-based Method Offers Alternative to Sandblasting in Manufacturing
DRESDEN, Germany, Sept. 30, 2022 — In the past, sandblasting has been a necessary part of production in a number of industrial processes. Now, the process may be replaced with a faster, cleaner, and more environmentally friendly process. A team from the Fraunhofer Institute for...
Nanofilms Optimize Raman Thermometry for Extreme Manufacturing
AMES, Iowa, Sept. 29, 2022 — Researchers at Iowa State University, Shenzhen University, and Shanghai University of Engineering Science demonstrated an approach to the thermal probing of nanomaterials in which the ratio of two resonance Raman peak intensities of a 2D material,...
LLNL’s Diffraction Gratings to Enable Most Powerful Laser
LIVERMORE, Calif., Sept. 27, 2022 — Researchers from Lawrence Livermore National Laboratory and their collaborators developed high-energy pulse compression gratings that will be installed in what will be the world’s most powerful laser system. The laser system, called L4-ATON,...
3D Printing Tackles One of the Strongest Stainless Steels
GAITHERSBURG, Md., Sept. 26, 2022 — A team from the National Institute of Standards and Technology (NIST), the University of Wisconsin-Madison (UW-Madison), and Argonne National Laboratory have 3D-printed a variety of stainless steel that is favored for its high strength and corrosion...
Light Trap Provides Near Perfect Absorption
VIENNA, Sept. 22, 2022 — Maximizing light absorption is essential for photovoltaics and many other photonic applications. It is also difficult, especially when the light is being absorbed by a thin layer of material that would normally allow a large portion of the light to...
Technique Enables In Vivo Vascular Imaging at Single-Cell Resolution
HONG KONG, Sept. 22, 2022 — A two-photon fluorescence imaging method developed by researchers at the University of Hong Kong and the University of California, Berkeley was able to image the flow of individual blood cells at 1000 2D frames and 1,000,000 line-scans per second in...
Light Source Gives Quantum Info Processing a Sense of Direction
HARBIN, China, Sept. 21, 2022 — Researchers from Harbin Institute of Technology and Australian National University used bulk states in the continuum (BICs) to develop metasurfaces — doped with light-emitting molecules — that operate as compact sources of chiral light....
Raman Instrument Advances Study of Greener Fuels for Aerospace
WASHINGTON, D.C., Sept. 20, 2022 — There is much interest in developing aerospace engines that run on renewable, hydrogen (H2-rich) fuels. In addition to providing sustainability, these fuels exhibit a high specific impulse (i.e., the measure of how efficiently the chemical reaction...
Cascaded Neural Networks Help Virtually Re-Stain Tissue Samples
LOS ANGELES, Sept. 19, 2022 — Using a cascaded deep neural network structure, a UCLA research group led by professor Aydogan Ozcan developed a computational approach for chemical-free re-staining of tissue specimens. The AI-powered technique to virtual stain transfer provided...
High-Efficiency Frequency Comb Invites Range of Optical Endeavors
CAMBRIDGE, Mass., Sept. 16, 2022 — On-chip laser frequency combs are a promising technology for applications including environmental monitoring, optical computing, astronomy, and metrology. However, the inability to design an on-chip laser frequency comb that is both efficient and...
Metasurfaces Open Up Research Paths For Quantum State Engineering
ERLANGEN, Germany, Sept. 15, 2022 — Scientists from the Max Planck Institute for the Science of Light and the Friedrich-Alexander-Universität Erlangen-Nürnberg, in cooperation with Sandia National Laboratories, have pioneered a method of generating entangled photon pairs...
Nanotech, Deep Learning Combine to Detect Pediatric Tuberculosis
SEATTLE, Sept. 15, 2022 — A technique for diagnosing tuberculosis (TB) in children takes advantage of the optical properties of gold nanoparticles to detect the disease. The technique uses an artificial intelligence (AI) algorithm to enhance the sensitivity of the test....
Intelligent Microscope Framework Captures Biological Events
LAUSANNE, Switzerland, Sept. 13, 2022 — Biophysicists at École Polytechnique Fédérale de Lausanne (EPFL) introduced a method to automate microscope control for imaging biological events in detail with the help of artificial neural networks, while limiting stress on...
Rare-Earth Elements Offer Stable Multiband Microlasing Platform
WUHAN, China, Sept. 9, 2022 — A recent demonstration by a team at Huazhong University of Science and Technology (HUST) spotlights the possibility of stable multiband lasing by rare-earth elements. In the work, the research team used polymer-assisted thermal doping to fabricate...
Flow Cytometry Technique Shows Promise for Early Cancer Diagnosis
GUANGDONG, China, Sept. 8, 2022 — A digital droplet microfluidic flow cytometry technique could enable earlier recognition of tumor development and progress, by aiding in the detection of multiple microRNAs (miRNAs) in single circulating tumor cells (CTCs). Tumor-associated miRNAs...
Hamamatsu, Fraunhofer Develop Joint Application Lab
AACHEN, Germany, Sept. 8, 2022 — Together with Hamamatsu, the Fraunhofer Institute for Laser Technology (Fraunhofer ILT) launched an application lab for advanced laser material processing with ultrashort pulsed (USP) laser radiation, located in Aachen, Germany. The partners jointly...
Tiny IR Spectrometer Improves Sensitivity, Speed of Liquid Analysis
VIENNA, Sept. 7, 2022 — Analytical chemistry often requires the accurate measurement of concentration changes of substances in liquids, on a timescale of seconds. Particularly in the pharmaceutical industry, such measurements need to be extremely sensitive and reliable. A...
Expansion Microscopy Technique Reveals Hidden Nanostructures
CAMBRIDGE, Mass., Sept. 6, 2022 — Proteins and other molecules are often tightly packed together inside a living cell. These dense clusters can be difficult to image because the fluorescent labels used to make them visible can’t wedge themselves in between the molecules....
NASA Reveals First Exoplanet Images Taken by Webb Telescope
WASHINGTON, D.C., Sept. 6, 2022 — Astronomers have used NASA’s James Webb Space Telescope to take a direct image of a planet outside our solar system. The image, shown through four different light filters, demonstrates how the telescope’s infrared capabilities can lead...
Wireless Power Transfer System Brings Automated Charging Potential
SEOUL, South Korea, Sept. 1, 2022 — A wireless charger developed at Sejong University in South Korea overcomes some of the challenges that have hindered previous attempts to develop safe and convenient on-the-go charging systems. The new system uses infrared light to safely transfer...
Researchers Design Highly Sensitive, Mass-producible Organic Photodetectors
SUWON, South Korea, Aug. 30, 2022 — Newly developed green-light absorbing transparent organic photodetectors have been demonstrated to be highly sensitive and compatible with CMOS fabrication techniques. Incorporating these photodetectors into organic-silicon hybrid image sensors...
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July 2024
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