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Research & Technology News

Multimodal Microspectroscopic Approach Targets Cancer’s Spread in Tissue
BEIJING, July 17, 2023 — To improve the study of the pathological processes of cancer cells, researchers at Beijing Institute of Technology combined divided-aperture laser differential confocal microscopy with Raman spectroscopy and Brillouin spectroscopy. The researchers showed that their multichannel, microspectroscopic tool improves the spatial resolution of confocal microscopy and the detection accuracy of Raman and Brillouin spectroscopy for the study of human cells and tissues. The technique, which the
Rochester Proof of Principle Makes Fusion Targets Mass-Producible
ROCHESTER, N.Y., July 12, 2023 — Researchers at the University of Rochester’s Laboratory for Laser Energetics (LLE) have demonstrated a method that aims to make inertial confinement fusion suitable for affordable mass production. According to the researchers, the method...
CMU, Fujitsu Team Up for Dynamic 3D Structure Representation
PITTSBURGH, July 11, 2023 — Researchers from Carnegie Mellon University (CMU) and Fujitsu have developed a method to convert 2D images to a 3D structure. The researchers’ Dynamic Light Field Network (DyLiN) method handles nonrigid deformations and topological changes and...
Photonic Chip Drives Scalable Data Transfer
NEW YORK, July 11, 2023 — Systems that run artificial intelligence programs, such as large language models, face a “bandwidth bottleneck” that can limit the amount of data they transfer between nodes. Using light to send information between the nodes of data...
Femtosecond Fiber Laser Ushers in New Class of Visible Sources
QUEBEC CITY, July 10, 2023 — Researchers from Laval University reported the development of the first fiber laser that can produce femtosecond pulses in the visible range of the electromagnetic spectrum. Fiber lasers producing ultrashort, bright visible-wavelength pulses could...
Microscopy Method Uses Infrared Light to Image Molecules with Vibrational Contrast
PASADENA, Calif., July 7, 2023 — The complementary strengths of fluorescence and vibrational microscopy are combined in a new technique developed at Caltech, which is called bond-selective fluorescence-detected infrared-excited spectro-microscopy (BonFIRE). BonFIRE will benefit...
Photonic Chip Transforms Single Light Beam into Multiple
GAITHERSBURG, Md., July 6, 2023 — Researchers at the National Institute of Standards and Technology (NIST) have devised a photonic circuit on a chip that transforms a single incoming beam of laser light into a panoply of new beams, each with a host of different optical properties....
Optically Addressed Spintronics Eliminates Need for Magnetic Fields
CAMBRIDGE, Mass., July 5, 2023 — Electron spins could become more efficient and easier to manage through a light-based approach using halide perovskite semiconductors. Research teams at Harvard’s Rowland Institute and the University of Cambridge observed ultrafast spin-domain...
Video Tech Enables Imaging Through Scattering Media
HOUSTON, July 4, 2023 — Researchers from Rice University and University of Maryland have created full-motion video technology that could enable cameras to peer through fog, smoke, driving rain, murky water, skin, bone, and other media that reflect scattered light and...
Metasurfaces Exert Control Over Darkness
CAMBRIDGE, Mass., July 3, 2023 — Researchers led by Federico Capasso at Harvard John A. Paulson School of Engineering and Applied Sciences have developed methods to exert control over points of darkness, rather than light, using metasurfaces. “Dark regions in electromagnetic...
Optical Isolator Guards Against Unwanted Reflections
CAMBRIDGE, Mass., June 30, 2023 — An optical isolator developed at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) could drastically improve optical systems for many practical applications. Many optical systems, such as those used for...
REM Atoms and Nanophotonic Resonator Offer Path to Quantum Networks
GARCHING, Germany, June 29, 2023 — Researchers at Max Planck Institute of Quantum Optics (MPQ) and Technical University of Munich (TUM) demonstrated a potential platform for large-scale quantum computing and communication networks. Secure quantum networks are of interest to financial...
Optogenetics Reveals Relationship Between Brain and Gut Health
CAMBRIDGE, Mass., June 28, 2023 — The brain-gut connection is known to influence hunger and mood, and it has also been associated with neurological and other disorders. To explore the signaling that occurs between these two organs, scientists at MIT integrated light sources, thermal...
Active-passive GaN Scheme Shows Promise for Photonic Integration
NANJING, China, June 27, 2023 — Researchers from Nanjing University have proposed an active-passive photonic integration scheme that showcases a photonic integrated circuit chip that combines a light source, modulator, photodiode, waveguide, and Y-branch splitter, all based on a...
Compact, Single-Mode THz QCLs Get Boost from BICs
SINGAPORE, June 27, 2023 — A team at Nanyang Technological University (NTU) developed an electrically pumped, topological, bulk quantum cascade laser (QCL) that operates in the terahertz (THz) frequency range. The THz QCL is governed by a mechanism known as bound states in...
Novel Hybrid Material Facilitates Photon Upconversion
RIVERSIDE, Calif., June 26, 2023 — University of California, Riverside (UCR) researchers have designed a composite material that offers powerful photon upconversion capabilities and that could support a range of light-driven applications as a result. The composite is made from...
Time-Resolved Spectroscopy Peers in on Irreversible Phenomena
OTTAWA, Ontario, June 26, 2023 — A team of researchers at the University of Ottawa developed a terahertz (THz) spectroscopy technique for recording movies in real time at 50,000 fps. High-speed video captures and slow-motion movies allow scientists to observe the mechanical...
Graph-Based Photonic Device Holds Key for Quantum Applications
BEIJING, June 23, 2023 — Collaborating researchers from Asia, Australia, and Europe developed a prototype of a graph-based quantum photonic device. The researchers based their architecture on the very large-scale integration (VLSI) of silicon quantum photonics to devise...
Modulator Drives Record-Fast Transmission in Face of Data Traffic
MONTREAL, June 21, 2023 — Although silicon photonics holds potential as a platform for optical transceivers, due to its CMOS compatibility, the approach is limited in its electro-optic bandwidth. It also carries high driving voltage requirements. The qualities can hinder its...
Near-Infrared Wavelength Specificity Yields Phototherapy Insights
ARLINGTON, Texas, June 19, 2023 — Transcranial photobiomodulation (tPBM) is an emerging form of light therapy that uses LEDs or low-intensity lasers that emit near-infrared (NIR) light to stimulate the brain. Although tPBM is in the early stages of development, it shows promise as a...
Caltech Team Unlocks Photonic Computing Power with Artificial Life
PASADENA, Calif., June 16, 2023 — Researchers at Caltech used optical hardware to realize cellular automata, a type of computer model consisting of a “world,” or grid containing “cells” — represented by each individual square of the grid — that...
High-Speed Nanomachining Imparts Nanostructures’ Finest Features
XIAMEN, China, June 15, 2023 — The need to increase component density, as well as add performance, are long-standing drivers behind the development of nanofabrication technology. Both qualities require a high level of accuracy in materials processing and manufacturing capability....
Integrated, High-Speed QKD Broadens Reach of Quantum Security
WASHINGTON, D.C., June 15, 2023 — Quantum key distribution (QKD) provides long-term security for long-distance communications by generating encryption keys based on quantum mechanics. Quantum technology ensures a secure key exchange between sender and receiver. To industrialize and...
Light-Reactive Concrete Locks in Clean Air
GOYANG, South Korea, June 14, 2023 — Researchers at the Korea Institute of Civil Engineering and Building Technology (KICT) have developed a photocatalytic concrete that can remove fine particulate matter on roads. The technology holds promise for underground road tunnels, where poor...
DNA-Barcoded Fluorescence Imaging Illuminates Core Cell Components
MUNICH, June 13, 2023 — Since many core components of cells — like DNA, RNA, proteins, and lipids — are just a few nanometers in size and substantially smaller than the resolution limit of traditional light microscopy, the exact composition and arrangement of...

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