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Research & Technology News

Multicolor Laser Expands Integrated Photonics Landscape
ROCHESTER, N.Y., Oct. 25, 2022 — Though integrated semiconductor lasers have been at the core of integrated photonics, enabling many advancements over the last few decades in information technologies and basic science, integrated lasers continue to lack key functions that are needed for evolving applications, including lidar and AR/VR. Using a type of integrated semiconductor laser that is based on the Pockels electro-optic effect, a team from the University of Rochester (UR), with researchers at Caltech, the University
Space-Saving Sensors Ease Automotive Design Woes
MUNICH, Oct. 20, 2022 — Self-driving vehicles need enough sensors to guide them safely through all types of traffic situations — and the sensors need enough space to work properly. As more sensors are added to self-driving cars, the design challenges also add up,...
Laser Surface Modification Aims to Reduce Infection from Implants
WEST LAFAYETTE, Ind., Oct. 19, 2022 — To help prevent infections caused by orthopedic implants, Purdue University researchers developed a laser-assisted surface modification process that may improve the efficacy of the implanted device. Most ortho device-related infections occur because...
Superresolution Method Could Improve Understanding of Gene Function
BARCELONA, Oct. 18, 2022 — An interdisciplinary team from the Centre for Genomic Regulation (CRG) and the Institute for Research in Biomedicine (IRB Barcelona) has developed an imaging technique that captures the structure of the human genome to reveal how individual genes...
Nanoscale Imaging Captures Soft Matter in Vitro
BERKELEY, Calif., Oct. 17, 2022 — Researchers at Lawrence Berkeley National Laboratory (Berkley Lab) developed an imaging platform that enabled nondestructive spectroscopic imaging of soft materials with nanometer spatial resolution, under in vitro conditions and external stimuli....
SCANLAB, TU Dresden Develop Polygon Scanner Under LAMpAS Project
PUCHHEIM, Germany, Oct. 17, 2022 — Collaborators SCANLAB and the Technische Universität Dresden (TU Dresden) reported their design of a high-speed speed polygon scanner unit that produces periodic surface patterns by using the principle of interference. The device was completed...
Low-Cost Method Offers Solution for Small-Volume MEMS Sensor Production
STOCKHOLM, Oct. 14, 2022 — Researchers at KTH Royal Institute of Technology have developed a 3D-printing technique for specialized manufacturing of microelectromechanical systems (MEMS). The approach offers a cost-efficient way to manufacture custom-designed MEMS devices, in...
Imaging System Speeds Diagnosis with Real-Time Biopsy Analysis
ROCHESTER, N.Y., Oct. 13, 2022 — Results of a pilot study conducted at the University of Rochester showed that a system based on two-photon fluorescence microscopy (TPFM) enabled rapid diagnosis of nonmelanoma skin cancer through real-time imaging of unprocessed, fresh tissue...
Tool Path Optimization Bolsters Precision Machining of Freeforms
TOKYO, Oct. 12, 2022 — Researchers from Keio University developed a tool path generation method for driving an independently controlled fast tool servo (FTS) for freeform surface machining. Without necessity of trial and error, the method enabled rapid manufacturing of...
Spectroscopy and Machine Learning Focus Lens on Far Reaches of the Universe
MELBOURNE, Australia, Oct. 11, 2022 — Researchers from the ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) and the University of New South Wales (UNSW) Sydney spectroscopically confirmed a number of strong gravitational lenses that were initially identified...
3D-Printed Micro-Optic Enables Vortex Bessel Beam Generation
YAVNE, Israel, Oct. 7, 2022 — Researchers from Soreq Nuclear Research Center in Israel have shown that 3D laser printing can be used to fabricate a high-quality, complex polymer optical device directly on the end of an optical fiber. This type of micro-optical device —...
Laser-Based Silicon Crystallization Process Improves MEMS Sensing
AACHEN, Germany, Oct. 6, 2022 — Researchers from the Fraunhofer Institute for Laser Technology (Fraunhofer ILT), in collaboration with colleagues from Fraunhofer ISIT and IST, developed a CMOS-compatible deposition and laser crystallization process for the production of...
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...
"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...

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