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Research & Technology News
Compact Terahertz Laser, With Room to Shrink, Produces 120 Frequencies
CAMBRIDGE, Mass., Jan. 31, 2022 — Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have taken a step toward bringing terahertz frequencies out of their hard-to-reach region of the electromagnetic spectrum and into everyday applications. A team demonstrated a terahertz laser that is compact, operates at room temperature, and can produce 120 individual frequencies spanning the 0.25- to 1.3-THz range, far broader than previous terahertz sources. The team reports the device is the
Startup Integrates Research-Grade Brain Imaging into Wearable Cap
LOS ANGELES, Jan. 31, 2022 — Neurotechnology company Kernel has developed a wearable headset device for brain measurement. The device, called Kernel Flow, is based on time-domain functional near-infrared spectroscopy (TD-fNIRS) — considered the gold standard for...
Quantum Computing Technique Harnesses Noise
SEATTLE, Jan. 27, 2022 — Researchers at the University of Washington (UW) have developed optical computing hardware for AI and machine learning that is faster and more energy efficient than conventional electronics-based computers. The work also addresses another challenge:...
Record Strain Achieved in Single-Crystal Silicon
GUILDFORD, England, Jan. 26, 2022 — A simple method for producing what scientists have reported are record levels of strain in single-crystal silicon could lead to the ability to integrate photonics more fully with silicon structures. The method was demonstrated by a research team at...
Flow Cytometry Technique Enables High-Speed Cell Sorting
FRANKLIN LAKES, N.J., Jan. 24, 2022 — A study led by global medical technology company BD (Becton, Dickinson, and Co.), in collaboration with the European Molecular Biology Laboratory (EMBL), has demonstrated an innovation in flow cytometry that adds fluorescence imaging and image-based...
VCSEL Addition Helps AI Light-Field Camera Read Facial Expressions
DAEJEON, South Korea, Jan. 24, 2022 — A team at the Korea Advanced Institute of Science and Technology (KAIST) has developed a technique for facial expression detection by merging near-infrared (NIR) light-field camera imaging techniques with AI technology. Unlike a conventional camera,...
Laser Ophthalmoscopic Method Enables In Vivo Imaging of the Eye
WARSAW, Poland, Jan. 21, 2022 — An instrument called the two-photon excited fluorescence scanning laser ophthalmoscope (TPEF-SLO) has made it possible to view, in real time, the biochemical processes that occur in the retina. Researchers have traditionally been unable to view...
Chip-size Sensor Performs on Par With Conventional Spectrometers
EINDHOVEN, Netherlands, Jan. 20, 2022 — A miniaturized near-infrared (NIR) sensor for industry, agriculture, and other sectors is ready to be deployed, according to its developers at the Eindhoven University of Technology (TU/e). The sensor’s design is based on an approach to...
Laser Nanosoldering Boosts Conductivity of Nanoelectrodes
GUANGZHOU, China, Jan. 19, 2022 — Researchers at Jinan University and the Chinese Academy of Sciences developed a plasmon-enhanced laser nanosoldering technology to increase the electrical conductivity of silver (Ag) nanowires that are fabricated using femtosecond laser direct...
Light Spurs Ion Motion to Up-Power Fuel Cells, Batteries
CAMBRIDGE, Mass., Jan. 18, 2022 — Research from MIT and Kyushu University suggests that light could provide significantly improved performance to fuel cells, lithium batteries, and other devices that rely on the movement of charged atoms. The work introduces and demonstrates a way...
Optical Biopsy System Cuts Potential for Misdiagnoses of Liver Cancer
WASHINGTON, D.C., Jan. 18, 2022 — An optical biopsy system that combines diffuse reflectance spectroscopy and fluorescence lifetime measurements can distinguish between cancerous and healthy tissue in the liver. The technology could make it easier to diagnose liver cancer, which is...
Sensor Could Make 3D Holograms a Feature in Mobile Devices
SEOUL, South Korea, Jan. 17, 2022 — Researchers at the Korea Institute of Science and Technology (KIST) and Yonsei University are laying the groundwork for 3D digital holography on mobile devices. The group designed a photodiode that detects the polarization of light in the...
Spectroscopy Method Could Raise Number of Viable Donor Kidneys
WASHINGTON, D.C., Jan. 14, 2022 — Researchers at the University of Shanghai for Science and Technology and the Changhai Hospital of Shanghai used label-free surface-enhanced Raman scattering (SERS) spectroscopy to quantitatively assess donor kidney quality, reportedly for the first...
Nanosize Device Noninvasively Assesses Cell's Electric Field
LOS ANGELES, Jan. 13, 2022 — A nano-size, organic molecular device that can detect and manipulate its surrounding bioelectric field opens possibilities in biophotonics, specifically in wound healing and in the fight against diseases. The triangle-shaped device is made of two...
Squeezed Light Source Aims to Hasten Arrival of Large-Scale Quantum Computers
TOKYO, Jan. 13, 2022 — NTT Corp., in collaboration with the University of Tokyo and RIKEN, has developed an optical fiber-coupled quantum light source. Such a light source that can produce squeezed light is considered to be a crucial component to realizing a...
Research Pinpoints Benefits of Varying Size and Shape of Classical VCSELs
BEIJING, Jan. 12, 2022 — A study conducted by the Bimberg Chinese-German Center for Green Photonics, Changchun Institute of Optics, Fine Mechanics, and Physics of the Chinese Academy of Sciences reported on the progress on multi-aperture VCSELs. The study showed that the...
Metasurface-Based Multiplexing Sharpens Vector Beam Communications
SHENZHEN, China, Jan. 11, 2022 — An approach to cylindrical vector beam (CVB) multiplexing that is based on off-axis polarization control, developed by a research team from Shenzhen University, could help realize the potential of CVB multiplexing as a pathway to high-capacity...
Supercomputer Adds Efficiency to Light-Matter Simulations
TSUKUBA, Japan, Jan. 11, 2022 — Researchers at the University of Tsukuba developed a unified method for simulating light-matter interaction at the atomic scale. The method is considered to be highly efficient by the researchers, as it simultaneously calculates electromagnetic...
Optogenetics Tool Brings Dynamics of Cellular and Tissue Mechanics to Light
OKAZAKI, Japan, Jan. 10, 2022 — A research team at the National Institute for Basic Biology (NIBB) developed an optogenetic tool that can reduce cellular contractile force to better understand how contractile forces generated by cells — those that affect an array of...
Photon-Controlled Electron Beams Push Bounds of Quantum Metrology
LAUSANNE, Switzerland, Jan. 7, 2022 — The combination of integrated photonics and electron microscopy supports a method for highly efficient electron-beam modulation. The experimental work described by scientists at École polytechnique fédérale de Lausanne (EPFL),...
Shift to Transmissive Mode Improves Thick Tissue Laser Speckle Contrast Imaging
WUHAN, China, Jan. 7, 2022 — Although reflective-detected laser speckle contrast imaging (LSCI) is a powerful tool for monitoring blood flow circulation at the surface layers of tissue, it is inadequate for detecting signals from thick tissue layers. A scientific team from...
Photoelectrochemical Sensor Tests for Coronavirus in Minutes
MADRID, Jan. 6, 2022 — Scientists in Spain have designed a photoelectrochemical aptasensor to quickly detect coronavirus using a saliva sample. The sensor device, developed by a research team at the Universidad Carlos III de Madrid (UC3M), obtains quantitative...
Solar Cell Simulator Advances Photovoltaic Efficiency
CAMBRIDGE, Mass., Jan. 5, 2022 — A differentiable solar cell simulator, newly developed by researchers at MIT and Google Brain, tells scientists which changes will provide the improvements they wish to make in a solar cell configuration. The new simulator computes the power...
Magnetically Controlled Nanolasers Protect Optical Signals
ESPOO, Finland, Jan. 4, 2022 — A lasing control mechanism, introduced by a research team at Aalto University, enables users to control plasmonic nanolasers remotely, using a magnetic field. Until now, the only way to switch plasmonic nanolasers on and off has been through direct...
Continuous-Wave Diodes Shrink Size, Cost of 3D Laser Printers
KARLSRUHE, Germany, Jan. 3, 2022 — Compact desktop printers could soon take the place of big, expensive laser printers for printing 3D micro- and nanostructures. A two-step 3D printing process, invented by researchers at Karlsruhe Institute of Technology (KIT) and Heidelberg...
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July 2024
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