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Research & Technology News
Signal Enhancement Enables Study of Label-Free Proteins
MARSEILLE, France, Jan. 26, 2023 — Researchers at Institut Fresnel have developed a technique to detect the ultraviolet-autofluorescence signal in single proteins, opening the way for the label-free study of thousands of proteins whose natural fluorescence cannot be detected using existing technology. Though proteins are fluorescent in the UV because they contain tryptophan amino acids, most proteins have only one to five tryptophan — which is too few to provide a strong UV signal at the level required for label-free
Single-Pixel Camera Streams in Real Time at 100 fps
VARENNES, Quebec, Jan. 26, 2023 — The speed of most single-pixel imaging (SPI) systems is hampered by the refresh rates of digital micromirror devices (DMDs) and the time-consuming iterations of compressed-sensing (CS)-based reconstruction. The data acquisition rate of most SPI...
Human Limb Model Could Evaluate Fluorophores for Safety in Surgery
BELLINGHAM, Wash., Jan. 25, 2023 — As the popularity of fluorescence-guided surgery grows, so does the demand to design and develop fluorophores, which serves to distinguish the target tissue from other tissues and subsequently guide surgical steps. The current list of FDA-approved...
Research Project Seeks to Standardize Lidar Tests
DAYTON, Ohio, Jan. 20, 2023 — A national group formed by Paul McManamon of Exciting Technology, in conjunction with SPIE, is working to develop standardized tests to evaluate lidar technologies. Despite their crucial role in both autonomous vehicles and advanced driver...
Fully Tunable Method Strengthens Electron-triggered Light Emission
CAMBRIDGE, Mass., Jan. 19, 2023 — A wavelength of visible light is about 1000 times larger than an electron. Because of the difference in scale, the interactions between photons and electrons are inherently weak. MIT researchers have found that photonic flatbands can overcome the...
Researchers Test Imaging Modalities For Accessing Tooth Decay
SAN FRANCISCO, Jan. 19, 2023 — To improve dental health, researchers at the University of California, San Francisco evaluated optical imaging techniques for their efficacy in the identification of secondary tooth decay, which can occur even if a tooth has already been filled. The...
Acoustic Imaging Aims to Reduce Tissue Damage from Radiation Therapy
ANN ARBOR, Mich., Jan. 18, 2023 — The need to deliver the intended, optimal radiation dose to a tumor while sparing the healthy tissue surrounding the cancer is critical to cancer treatments using radiation therapy. Now, with a real-time, 3D imaging system developed at the...
Laser Method Drills Taper-, Crack-Free Holes in Glass
BORDEAUX, France, Jan. 17, 2023 — Researchers from the Institute of Intense Lasers and Applications (CELIA) at the University of Bordeaux have developed a glass micro-drilling method using a femtosecond laser operating in gigahertz-burst (GHz burst) mode. The researchers used the...
Researchers Combine Two Light-Trapping Methods in Single Device
COLLEGE PARK, Md., Jan. 17, 2023 — Researchers from the University of Maryland’s Joint Quantum Institute (JQI) combined the qualities of two methods for light-trapping — whispering-gallery mode (WGM) and photonic crystals — in a hybrid device called the microgear...
High-Speed Spectral Imaging Captures Tissue’s Chemical Makeup
IRVINE, Calif., Jan. 16, 2023 — Scientists at the University of California, Irvine developed a spectral imaging technique that is poised to help researchers and industries across multiple fields, including medical and tech, quickly visualize the chemical composition of tissues and...
Hamamatsu Edges Closer to Compact Laser Fusion Source
HAMAMATSU, Japan, Jan. 13, 2023 — Building on an existing multiyear R&D pursuit to establish technology that produces laser pulses at 250 J with a repetition rate of 10 Hz, Hamamatsu Photonics has developed a laser system that produced pulses with an energy of 100 J at a...
Simulation Process Optimizes Additive Manufacturing Parameters
MUNICH, Jan. 12, 2023 — A method of simulation of the additive manufacturing process could enable better yields and higher-quality results. Researchers from Fraunhofer member institutions combined different methods to develop a simulation of the 3D-printing process itself,...
TiO2 Boosts Efficiency, Photoluminescene of White Laser Diodes
KYOTO, Japan, Jan. 10, 2023 — Light-scattering nano-elements, also known as nanoantennas due to their ability to harness light, are used as an optical control technology in nanophotonics. In combination with a phosphor plate, and upon irradiation, these 2D structures — in...
Integrated Terahertz Platform Supports Broadband Coherent Photonics
ZURICH, Jan. 9, 2023 — Recent advancements in the high-temperature operation of terahertz (THz) quantum cascade lasers, combined with their frequency agility and the potential to operate as frequency combs and high-speed detectors, make them highly appealing for THz...
Hydrogel Improvements Boost Utility of Expansion Microscopy
PITTSBURGH, Jan. 5, 2022 — Collaborators from Carnegie Mellon University, the University of Pittsburgh, and Brown University have described a microscopy technique and set of protocols that overcome a bottleneck to the expansion microscopy method. The collaborators developed...
Laser-Induced Protein Detection Speeds Diagnosis of Disease
OSAKA, Japan, Jan. 5, 2023 — Researchers at Osaka Metropolitan University have developed an optical alternative to immunoassays and other methods used for protein analysis. The alternative method provides rapid, highly sensitive detection of proteins through laser irradiation....
Photonic System Explores Two-Dimensional Topological Pumping
SHANGHAI, Jan. 3, 2023 — In photonic systems, Thouless pumping enables light transport to take place in a robust way. The method is quantized — determined by the global rather than the local properties of a system. It exhibits topological features, and its ubiquitous...
Microwave Photonic Filter Shifts Paradigm for Future Communications
ENSCHEDE, Netherlands, Jan. 2, 2023 — Researchers from the University of Twente have developed a multifunctional photonic integrated circuit (PIC) that enables programmable filtering functions with a reported record-high dynamic range. The advancement addresses concepts and technologies...
Pump-Probe Spectroscopy Could Help to Control Chiral Molecules
BERLIN, Dec. 30, 2022 — An international research team at Freie Universität Berlin, in collaboration with colleagues at the DESY research center, Kiel University, and Kansas State University, has proposed a quantum-chemical calculation-based approach to induce and...
Optical Tweezer System Conducts High-Accuracy Cell Screening
QINGDAO, China, Dec. 29, 2022 — Researchers from the Single-Cell Center of the Qingdao Institute of Bioenergy and Bioprocess Technology (QIBEBT) of the Chinese Academy of Sciences have proposed an optical tweezer-assisted pool-screening and single-cell isolation (OPSI) system that...
Signal Processing Algorithms Cut Turbulence in Free-Space Communications
BIRMINGHAM, England, Dec. 28, 2022 — Researchers from Aston University and Glasgow University have created signal-processing algorithms to help mitigate the impact of turbulence in free-space optical experiments. They used commercially available photonic lanterns — optical fiber...
Biosolar Cell Draws Electricity from Photosynthesis Process
HAIFA, Israel, Dec. 27, 2022 — Researchers from the Israel Institute of Technology (Technion) used a succulent plant to create a living “bio-solar cell” that runs on photosynthesis. The demonstration showed how the natural processes that take place in living plants...
Modified Raman Microscopy Technique Reveals Molecular Orientation Patterns
GAITHERSBURG, Md., Dec. 27, 2022 — Researchers at the National Institute of Standards and Technology (NIST) have developed a way to measure the 3D orientation of molecules within a material made of polymers. The measurement technique — based on broadband coherent anti-Stokes...
Phase Retrieval Method Addresses Programmable PIC Calibration
MELBOURNE, Australia, Dec. 26, 2022 — Researcher from Monash University, RMIT, and the University of Adelaide have developed an accurate method of controlling optical circuits on fingernail-size photonic integrated circuits (PICs). The development builds on previous work by the team, in...
Terahertz Microscopy Could Boost Performance of Perovskite
AMES, Iowa, Dec. 26, 2022 — To better evaluate perovskite solar cell material(s), scientists at the U.S. Department of Energy’s Ames National Laboratory developed a microscope that simultaneously images at the terahertz (THz) frequency and nanometer spatial scales....
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