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Research & Technology News

Chromium Complex Emits Light in the Coveted NIR-II Range
BASEL, Switzerland, Aug. 17, 2021 — A team of Swiss scientists has developed the first chromium complex that emits light in the NIR-II (1000 to 1700 nm) range. The scientists achieved an NIR-II luminescence of 1067 nm by strengthening the metal-ligand bond covalence in the complex. The approach weakened the mutual repulsion between d-electrons in the emissive excited state, lowering the energy enough to cause NIR-II luminescence to occur in the new trivalent chromium (CrIII) complex. In many complexes, both electrons
Luminescent Manganese Complexes Show Promise for Sustainable Displays
BASEL, Switzerland, Aug. 17, 2021 — In their quest to produce more-sustainable luminescent materials and catalysts for the conversion of sunlight into other forms of energy, University of Basel researchers have developed a class of compounds based on manganese. The metal is more...
Study on Thin-film Glass Reveals Liquid Phase
STATE COLLEGE, Pa., Aug. 13, 2021 — Researchers at Penn State have shown a previously undescribed liquid phase in thin films of a glass-forming molecule. The work shows how thin films of glass can be fabricated to be denser and more stable, and it provides a framework for new...
Deep Learning-Trained Neural Network Reconstructs OCT Images
LOS ANGELES, Aug. 12, 2021 — A team of UCLA and University of Houston (UH) scientists, led by Aydogan Ozcan in collaboration with Kirill Larin, used deep learning to train a neural network to rapidly reconstruct OCT images using undersampled spectral data. Although the...
Metamaterials Work Expands Capabilities for Myriad Applications
ITHACA, N.Y., Aug. 11, 2021 — Researchers at Cornell University have proposed a method to modulate both the absorptive and refractive qualities of metamaterials in real time. Their findings present new opportunities to control — in both time and space — the...
Multifocal Imaging Algorithm Tracks Bio Processes in High-Resolution 3D
BONN, Germany, Aug. 11, 2021 — A 3D reconstruction method, developed by researchers at the ImmunoSensation2 Cluster of Excellence at the University of Bonn, the University Hospital, and the Center for Advanced European Studies and Research (caesar), uses multifocal imaging (MFI)...
Smart Device-Enabled Optical Breathalyzer Checks Blood Alcohol Levels
QUEBEC CITY, Aug. 11, 2021 — Researchers at Laval University are developing an optical breathalyzer that can be integrated into the screen of a mobile device. This technology could provide an accessible, inexpensive way to check blood alcohol content (BAC) and reduce...
Single-Spin Color Centers in SiC Cue Up Potential for Quantum Storage Advances
HEFEI, China, Aug. 10, 2021 — A group at the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) achieved the high-contrast readout and coherent manipulation of a single silicon carbide divacancy color center electron spin at room...
Smart Necklace Tracks Facial Expressions
ITHACA, N.Y., Aug. 10, 2021 — Cornell University researchers have developed a smart necklace wearable device capable of tracking facial expressions using light. The device, NeckFace, continuously tracks full facial expressions using infrared cameras to capture images of the chin...
Tweezers Enable Dynamic Control of Single Nanoscale Quantum Objects
NASHVILLE, Tenn., Aug 9, 2021 — Led by Justus Ndukaife, assistant professor of electrical engineering, Vanderbilt researchers have introduced an approach for trapping and moving a single colloidal nanodiamond with nitrogen-vacancy center using a low-power laser beam. The width of...
Photoacoustic Device Modulates Single Neurons with High Spatiotemporal Resolution
BOSTON, Aug. 6, 2021 — An instrument developed at Boston University (BU) could advance fundamental knowledge in the field of neuroscience and lead to treatments for neurological diseases. The tapered fiber optoacoustic emitter (TFOE) uses the optoacoustic effect to enable...
Pulsed 'Laser-in-Liquids' Approach Speeds Catalyst Discovery
ROCHESTER, N.Y., Aug. 5, 2021 — A team at the University of Rochester showed the efficacy of pulsed lasers in accelerating research into chemical catalysts. The development of even a single catalyst material capable of triggering the arrangement and motion of the atoms needed to...
Conventional Telecom Tech Relays Highly Precise Reference Signals
ZURICH, Aug. 4, 2021 — A Swiss research project has shown that high-precision reference signals can be sent via conventional telecommunications infrastructure. The project, part of the Swiss National Science Foundation’s Synergia program, involves researchers from...
ODT Reveals Insights into Promising Substitute for Petroleum-Based Plastics
DAEJEON, South Korea, Aug. 4, 2021 — Using 3D optical diffraction tomography (ODT), scientists at KAIST (formerly the Korea Advanced Institute of Science and Technology) gained insight into how the biodegradable polyester polyhydroxyalkanoate (PHA) accumulates in the cells of living...
Imaging Method Reveals the Way Plants Take Up Water
NOTTINGHAM, England, Aug. 3, 2021 — Researchers at the University of Nottingham report the development of a way to observe how plant roots take in and circulate water at the cellular level. The work could help to identify future drought- and flood-resistant crops. The inability to...
Quantum Metasurfaces Manipulate Free Photons
LOS ALAMOS, N.M., Aug. 3, 2021 — A team at Los Alamos National Laboratory proposes that modulated quantum metasurfaces can control all properties of photonic qubits. According to the team, such a breakthrough would affect the fields of quantum information, communications, sensing,...
Semiconductor Surface States Enhance Wavelength Conversion
LOS ANGELES, Aug. 3, 2021 — Electrical engineers from the UCLA Samueli School of Engineering have introduced a solution to enhance wavelength-conversion efficiency by exploring the phenomenon of semiconductor surface states. The work, which establishes a more efficient way of...
Optical Measurement Reduces Vibration in High-Power Lasers
BERKELEY, Calif., Aug. 2, 2021 — The Berkeley Lab Laser Accelerator (BELLA) Center at the U.S. Department of Energy’s Lawrence Livermore National Laboratory has developed and tested an optical system to precisely measure and control the position and pointing angle of...
Photothermal Process Irradiates Nanoparticles to Control Cell Activity
ST. LOUIS, Aug. 2, 2021 — Using nanoparticles as photothermal nanotransducers, scientists at Washington University in St. Louis demonstrated reversible modulation of electrical activity in excitable nerve and heart muscle cells. The biocompatible, minimally invasive approach...
Injectable Biosensors Convert Brain Activities into Detectable Optical Signals
WASHINGTON, D.C., July 30, 2021 — Technology for monitoring neuronal activity noninvasively could allow scientists to study the brain without the need for surgery or implanted devices. The newly developed nanotechnology, called NeuroSWARM3 by its inventors at the University of...
Researchers Develop Octave-Spanning Combs in Aluminum Nitride Resonator
DUBLIN, July 30, 2021 — Collaborators from Ireland and China have demonstrated a method to develop an octave-spanning coherent optical comb with a much lower pump power compared with other techniques that require complicated controlling equipment. The photonic system...
Plasma Coating Offers Cost-effective, Sustainable Alternative to Indium
SYDNEY, July 29, 2021 — Researchers from the University of Sydney have developed a low-cost, sustainable, and readily available technology that can dim the screens of electronic devices, antireflection automobile mirrors, and smart architectural windows at a fraction of...
Custom Near-Field Nanoscopy Tool Images Materials at Nanoscale
CAMBRIDGE, Mass., July 28, 2021 — A near-field infrared (IR) nanoscope and spectroscope, custom built by a research team at MIT, can quickly and economically probe the characteristics of diverse materials at the nanoscale. Also known as a scattering-type scanning near-field optical...
Nanostructures Allow High Harmonic Generation with Pulsed Lasers
ITHACA, N.Y., July 27, 2021 — Cornell University researchers have developed nanostructures that enable record-breaking conversion of laser pulses into high-harmonic generation. The work paves the way for new scientific tools for high-resolution imaging as well as the study of...
On-Demand Optical Singularities Strengthen Range of Applications
CAMBRIDGE, Mass., July 26, 2021 — A group led by Federico Capasso at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) has broadened the study of optical singularities to include to zero-dimensional (point) and 2D (sheet) optical singularities. The group...

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