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Research & Technology News

Unidirectional Imaging Enables Asymmetric Visual Info Processing
LOS ANGELES, Nov. 11, 2024 — Traditional imaging systems are bidirectional — if a camera can see a person, the person can see a camera. Researchers at the University of California, Los Angeles (UCLA) recently developed a new type of imaging technology that could revolutionize how visual information is captured and processed: unidirectional imaging. By allowing images to be formed in only one direction, this technology provides an efficient and compact method for asymmetric visual information processing and
Photoresist Enables High-Throughput, High-Resolution Nanolithography
HANGZHOU, China, Nov. 6, 2024 — A new cationic-based photoresist can improve the production speed of two-photon lithography (TPL) without sacrificing resolution. The highly sensitive photoresist, called TP-EO (short for two-photon epoxy oligomer), was developed by a team at...
Laser-Activated Gel Forms Tissue Scaffolds for Medicine and Research
ZURICH, Nov. 5, 2024 — Using a laser and a light-reactive gel, a research team led by Hao Liu at ETH Zurich produced highly aligned microfilament structures for growing connective, nerve, and muscle tissue in a lab. The optically-based approach developed by the team could...
Researchers Push Broadband High-Resolution Frequency Combs into the UV
ORLANDO, Fla., Nov. 4, 2024 — Researchers have developed an ultrafast laser platform that generates ultra-broadband ultraviolet (UV) frequency combs with an unprecedented one million comb lines, providing exceptional spectral resolution. The approach, which also produces...
Raman Spectroscopy Gets Major Speed Upgrade
TOKYO, Oct. 31, 2024 — Researchers at the University of Tokyo have increased the measurement rate of Raman spectroscopy by 100-fold. Since the measurement rate of the technique has been a major limitation, the improvement is expected to aid advancements in multiple fields...
Meta-Imaging Camera Provides Precise Monocular Depth Sensing
BEIJING, Oct. 29, 2024 — Depth sensing plays a crucial role in various applications, including robotics, augmented reality, and autonomous driving. Monocular passive depth sensing techniques are valued for their cost-effectiveness and compact design which offers an...
Research Consortium Advances Diamond Spin Photon Quantum Computing
FREIBURG, Germany, Oct. 29, 2024 — Quantum computers promise the ability to solve complex problems in seconds that would take decades for modern supercomputers. While the goal is clear, the path to achieve it remains unclear due to the quantity of potential approaches to realize it....
Raman Spectroscopy Tests Biomarkers for Rapid Dementia Diagnosis
SOUTHAMPTON, England, Oct. 28, 2024 — Dementia is difficult to diagnose during the initial stages of the disease. Using current testing methods, it can take over two years for patients to receive a diagnosis. Many patients are not diagnosed until the disease has progressed to a point...
Ultrafast Logic Gate Could Act as All-Optical Switch for Fiber Optics
ANN ARBOR, Mich., Oct. 28, 2024 — A University of Michigan-led team demonstrated an ultrafast, all-optical switch by pulsing circularly polarized light through an optical cavity lined with tungsten diselenide (WSe2), an ultrathin semiconductor. The device could function as a...
Optical Computing Breakthrough Addresses Memory Limitations
PITTSBURGH, Oct. 25, 2024 — Up to this point, researchers have been limited in developing photonic memory for AI processing — gaining one important attribute, like speed, has meant sacrificing another, like energy usage. An international team of researchers has...
Broadband Frequency Conversion Method Could Improve Quantum Data Transfer
SHANGHAI, Oct. 23, 2024 — A new approach to achieving broadband, nonlinear frequency conversion could be a significant advancement for quantum information systems and integrated photonics. One of the challenges in developing quantum information technology is ensuring that...
Free-Form Dual Comb Technology Improves Gas Leak Detection
GAITHERSBURG, Md., Oct. 22, 2024 — A smart dual-comb spectroscopy (DCS) technique, from the scientists at the National Institute of Standards and Technology (NIST), detects gases and other substances with more speed and sensitivity than traditional dual-comb methods. The new,...
Neural Network Training Method Boosts Vision Capabilities
CAMBRIDGE, Mass., Oct. 22, 2024 — In the current AI landscape, sequence models have gained considerable popularity for their ability to analyze data and predict what to do next. Platforms like ChatGPT use next-token prediction to anticipate each word (or token) in a sequence to form...
Optical Phased Array-Based Optical Tweezers Manipulate Cells without Damaging Them
CAMBRIDGE, Mass., Oct. 21, 2024 — Compared to bulk optical tweezers, integrated optical tweezers are compact and low-cost, making them practical for most research organizations. But so far, integrated optical tweezers have been of limited use in biological research, due to the very...
Imaging Technique Enables 20-nm Resolution on Standard Microscopes
CAMBRIDGE, Mass., Oct. 18, 2024 — A new expansion microscopy (ExM) technique from MIT makes it possible to use a conventional light microscope to generate high-resolution images at the nanoscale, by expanding specimens 20-fold before imaging them. Historically, nanoscale structures...
Technique Engineers More Efficient Layered Perovskites
RALEIGH, N.C., Oct. 17, 2024 — North Carolina State University (NC State) researchers have developed and demonstrated a technique that allows them to engineer a class of materials called layered hybrid perovskites (LHPs) down to the atomic level, which dictates how the materials...
Photoacoustic Technique Captures Real-Time Anomalies in Microvasculature
LONDON, Oct. 16, 2024 — By using a laser to generate ultrasound waves that reveal structural changes, photoacoustic tomography (PAT) has shown its value in identifying disease conditions in the microvasculature, the tiny vessels that extend from major veins and arteries....
Bifocal Lenses, with Liquid Crystal Bilayers, Allow Flexible Light Modulation
WASHINGTON, D.C., Oct. 15, 2024 — A bilayer, bifocal lens with adjustable focal points could allow more flexible modulation of light in applications for optical computing, bioimaging, augmented and virtual reality, and other areas. The lens, which was developed at Hunan University,...
VCSEL Performance Improves with Mode Filtering Using Metal Apertures
CHANGCHUN, China, Oct. 15, 2024 — Vertical-cavity surface-emitting laser (VCSEL) light sources are used in optical storage, laser printing, 3D sensing, and other critical applications. Conventional, oxide-confined VCSELs typically operate in single-transverse mode, with an oxide...
Keller-Led Team Posts an Ultra-Short Pulse Record
ZURICH, Oct. 14, 2024 — Researchers at ETH Zurich have developed a laser that can produce extremely short pulses with peak powers up to 100 MW and 550 W of average power. The researchers, led by Ursula Keller, a professor at the Institute for Quantum Electronics, report...
Surgical Microscope Uses OCT to Define Precise Tumor Margins
WASHINGTON, D.C., Oct. 14, 2024 — A megahertz-speed optical coherence tomography (MHz-OCT) instrument, integrated with a neurosurgical microscope, has demonstrated the ability to acquire high-quality, volumetric, cross-sectional brain scans in seconds. The images obtained by the...
Attosecond Spectroscopy Captures Electron Transfer in Organic Molecules
MADRID, Oct. 10, 2024 — The redistribution of electronic density in molecules after they absorb light is an ultrafast phenomenon that involves quantum effects and molecular dynamics. The ability to measure the electron and charge transfer dynamics of this phenomenon with...
Spectroscopic Headset Could Reveal Stroke Risk
PASADENA, Calif., Oct. 8, 2024 — Despite the danger stroke presents to large segments of the population, clinicians have historically been at a disadvantage in successfully identifying those at grave risk of having a stroke ahead of time. But a team at the California Institute of...
Deep Learning-Based Method Guards Against Chip Tampering
WEST LAFAYETTE, Ind., Oct. 7, 2024 — The $75 billion counterfeit chip market jeopardizes the safety and security of multiple sectors that depend on semiconductor technologies, including aviation, communication, quantum computing, artificial intelligence, and finance. A new counterfeit...
OLED Tech Provides Optogenetic Light Source for Cochlear Implants
DRESDEN, Germany, Oct. 3, 2024 — Electrical cochlear implants (eCIs) are effective at restoring hearing when used in a quiet environment. However, eCIs do not work as well in noisy surroundings, and they are unable to fully capture the experience of listening to music for...

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