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Research & Technology News

Metamaterials Enable Time Reflection of Electromagnetic Waves
NEW YORK, March 27, 2023 — The reflected images produced when we look at a mirror are caused by electromagnetic lightwaves bouncing off the mirrored surface and creating the common phenomenon called spatial reflection. Similarly, spatial reflections of sound waves form echoes that carry our words back to us in the same order we spoke them. For over six decades, scientists have hypothesized about the possibility of a different type of wave reflection, known as a temporal or time reflection. In contrast to spatial
Chip-Scale Spectrometer Points to Portable Instrumentation
HONG KONG, March 24, 2023 — Scientists at the Chinese University of Hong Kong have developed an approach to chip-scale spectrometry that offers both high spectral resolution and optical bandwidth. The researchers designed and developed an integrated spectrometer by tailoring...
On-Chip Metrology Links Nobel Prize-Winning Optical Techniques
DELFT, Netherlands, March 24, 2023 — A team from Delft University of Technology has developed on-chip technology to measure distances in materials in materials at high precision — for example, underwater or for medical imaging. The technology relies on sound vibrations, and it is...
Experiment Validates Stimulated Emission for Single Photons
SYDNEY, March 23, 2023 — Scientists at the University of Sydney and the University of Basel have demonstrated the ability to manipulate and identify small numbers of interacting photons with high correlation. The achievement, the researchers said, represents an important...
Hybrid Platform Characterizes Tunable Laser Advancement
LAUSANNE, Switzerland, March 23, 2023 — Researchers at École Polytechnique Fédérale de Lausanne (EPFL) and IBM have developed an ultrafast, tunable, hybrid laser based on lithium niobate (LiNbO3) that could significantly improve optical ranging technology. The EPFL...
Wavefront Shaping Improves Tissue Imaging for Disease Detection
PASADENA, Calif., March 21, 2023 — Wavefront shaping is used to reverse the optical distortion caused by Earth’s atmosphere and provide clear images of distant planets. Beyond astronomy, wavefront shaping in biomedicine is emerging as a promising tool for controlling and...
Dual-Property Coating Combats Fog, Reflections at Same Time
JENA, Germany, March 20, 2023 — Researchers from the Fraunhofer Institute for Applied Optics and Precision Engineering IOF (Fraunhofer IOF) and Friedrich Schiller University Jena developed an optical coating system that combines antifogging (AF) and antireflective (AR) properties....
Topology-Based Fiber Ensures Robust Performance Amid Distortions
BATH, England, March 17, 2023— Researchers at the University of Bath fabricated optical fiber that hosts topological supermodes across multiple light-guiding cores. The topological protection of the fibers prevents changes to the structure of the fiber edge modes when the...
Researchers Shrink Dimensions in Which Light Can Be Confined
SOUTHAMPTON, England, March 16, 2023 — The degree to which light can be confined determines the intensity and precision of light-based devices. It also sets the limits within which nanoparticles can be observed. For these reasons, finding ways to confine and control light in ever smaller...
Superresolution Captures Conformational Changes in Proteins
HEIDELBERG, Germany, March 16, 2023 — Researchers led by Nobel laureate Stefan Hell at the Max Planck Institute for Medical Research have developed a superresolution microscope with a spatiotemporal precision of 1 nm/ms. The work builds upon the team’s recently introduced MINFLUX...
Graphene Properties Add Axial Resolution Precision to 3D Imaging
MUNICH, March 14, 2023 — Researchers at the Ludwig Maximilian University of Munich (LMU) combined pulsed-interleaved MINFLUX (pMINFLUX) nanoscopy with a newly developed method for axial resolution that exploits the special properties of the 2D material graphene to achieve...
First Heart Patients Diagnosed Using Ultrathin Fiber Optic Sensor
LONDON, March 9, 2023 — Medical personnel have used a fiber optics sensors-based diagnostic technology to detect the causes of heart disease for the first time in patients. The device, developed by University College London (UCL), is called iKOr. It uses an ultrathin...
Large-Aperture Metalens Images Lunar Surface
UNIVERSITY PARK, Pa., March 8, 2023 — Researchers at Penn State have developed a metalens that is large enough to be put into a telescope, and used the optic to image the moon's surface. The metalens, which the researchers used to create a metalens telecscope instrument, works in the...
Researchers Create Single-Photon Emitters at Desired Positions
DRESDEN, Germany, March 7, 2023 — Researchers from the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), TU Dresden, and Leibniz-Institut für Kristallzüchtung (IKZ) have demonstrated the controlled creation of single-photon emitters in silicon at the nanoscale. According to the...
Method Measures Electron Dynamics in Semiconductor Materials
BERKELEY, Calif., March 6, 2023 — The properties and performance of semiconductor chips powering modern technologies are ultimately determined by free electrons. With the continued miniaturization of electronic and photonic devices, tools to examine the behavior of free electrons,...
Laser Method Boosts Accuracy of Blood Flow Measurements in Feet
BIRMINGHAM, England, Feb. 28, 2023 — Researchers from Aston University have developed a method to improve the accuracy of blood flow measurements in the feet of patients with Type 2 diabetes. The laser-based technique improves accuracy in detecting minute changes in microcirculation,...
Novel Photodiode Cuts Excess Noise, Enhances Detection Efficiency
SHEFFIELD, England, Feb. 27, 2023 — Researchers at the University of Sheffield designed and developed an avalanche photodiode (APD) with significant potential for low photon detection. The highly sensitive gallium arsenide antimonide/aluminum gallium arsenide antimonide...
Lidar Methods Combine for Nonmechanical, Compact Solution
WASHINGTON, D.C., Feb. 24, 2023 — In a newly developed lidar system, researchers at Kyoto University integrated 3D flash and beam-scanning laser light sources to create a 3D, nonmechanical lidar system. The system can measure the distance of poorly reflective objects in the FOV and...
Novel Platform Reveals Insights into Control of Brain Network
CHAPEL HILL, N.C., Feb. 23, 2023 — Researchers at the University of North Carolina (UNC) School of Medicine combined fiber photometry with functional magnetic resonance imaging (fMRI) to examine the dynamic activity of brain regions related to the brain’s default mode network...
Tunable Photomemristor Streamlines Neuromorphic Vision Processing
HANGZHOU, China, Feb. 22, 2023 — Researchers at Hangzhou Institute for Advanced Study, State Key Laboratory of Infrared Physics, and Shanghai Institute of Technical Physics have created a two-terminal, nonvolatile photomemristor with a simple architecture and tunable...
Supermode Optical Resonator Moves Beyond Conventional Cavities
CAMBRIDGE, Mass., Feb. 21, 2023 — Researchers in the lab of Federico Capasso at Harvard University’s School of Engineering and Applied Sciences (SEAS) have developed a supermode optical resonator. The technology could have applications in telecommunications, laser technology,...
Scalable Large-Size Quantum State Generation Heralds Practical Quantum Optics
NANJING, China, Feb. 20, 2023 — Among all quantum systems, photons are known for their weak interaction, which allows long coherence time to be achieved even at room temperature, making them suitable for transmitting qubits between distant locations. However, the weak interaction...
Substrate Alternative Increases Perovskite Efficiency
ROCHESTER, N.Y., Feb. 20, 2023 — University of Rochester researchers have found that the use of a metal substrate can boost the photoelectric conversion efficiency of perovskites. Perovskites, a family of crystalline materials, have shown promise as a far less expensive and equally...
AI-Aided Spectroscopy Assesses Burn Severity to Improve Recoveries
WASHINGTON, D.C., Feb. 17, 2023 — Researchers at Stony Brook University developed a neural network model that uses terahertz time-domain spectroscopy (THz-TDS) to evaluate burns and predict healing outcomes. The latest work builds on a previous advancement in which the researchers...
Structured Light Advancement Clears Way to Image Through Noisy Channels
JOHANNESBURG, Feb. 16, 2023 — An exciting prospect in modern optics is to exploit patterns of light — how the light looks in its many degrees of freedom — often referred to as “structured light.” Each distinct pattern could form an encoding alphabet for...

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