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photochemical News
Industrial Photocatalyst Harnesses the Visible Spectrum
JOHANNESBURG, Sept. 4, 2023 — Photocatalysts show the potential to be used in energy generation and environmental detoxification applications. This is an intriguing quality, since reducing energy use in bulk industrial processes can create a trade-off between efficiency and environmental harm. Fossil fuels, for example, have helped humanity expand and innovate for hundreds of years. But their environmental toll and inevitable depletion create a need for a safer and more abundant resource, like solar power. Highly
Photoswitchable Materials Streamline Thermal Regulation
SANTIAGO DE COMPOSTELA, Spain, May 12, 2023 — The design and development of functional materials with tunable thermal conductivity — for example, to ensure the thermal dissipation in microelectronics devices — is necessary to prevent such devices from overheating. The ability to...
Unconventional Perovskite Growth Method Boosts Solar Cell Efficiency
GOLDEN, Colo., Jan. 10, 2023 — To improve the efficiency and stability of wide-bandgap perovskite solar cells, researchers at the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) and the University of Toledo used a gas-quenching process to produce...
Nanoscale Imaging Captures Soft Matter in Vitro
BERKELEY, Calif., Oct. 17, 2022 — Researchers at Lawrence Berkeley National Laboratory (Berkley Lab) developed an imaging platform that enabled nondestructive spectroscopic imaging of soft materials with nanometer spatial resolution, under in vitro conditions and external stimuli....
Startup to Shrink Miles-long Plasma Accelerators to Room Size
AUSTIN, Texas, Sept. 29, 2022 — Austin, Texas-based TAU Systems raised $15 million in seed investment that the company will use to develop compact particle accelerator technology. According to the company, the laser-driven particle accelerators and x-ray free-electron lasers...
Reusable Light-Writing Solution Reduces Paper Waste
RIVERSIDE, Calif., June 14, 2022 — A team led by professor Yadong Yin at the University of California, Riverside formulated a light-sensitive coating material for rewritable light-printing. The material is made from doped titanium dioxide (TiO2) nanocrystals that are synthesized in a...
Liquid Silica Resin Optimizes 3D Printing for Complex Micro-Optics
TUCSON, Ariz., June 1, 2022 — A liquid silica resin (LSR) developed by researchers at the University of Arizona has proven successful as a 3D-printing medium for complex micro-optics. The organic-inorganic hybrid material has shown high curing speeds, better mechanical...
Paper-Based Photosensor Simplifies Hydrogen Peroxide Detection
BENGALURU, India, March 18, 2022 — Researchers at the Indian Institute of Science (IISc) have developed an inexpensive sensor made with a photoluminescent paper that enables the visual detection of even miniscule amounts of hydrogen peroxide (H2O2). The chemical is found in diverse...
Method Keeps Liquid Marbles Functional for Microfluidic Systems
NATHAN, Australia, March 11, 2022 — A research team from Griffith University developed a technique that uses condensation to noninvasively refill liquid marbles with water. The method could improve the viability of applications such as drug delivery. According to the researchers, the...
Photonic Technology Converts Greenhouse Gases into Clean Energy
THE HAGUE, Netherlands, Jan. 25, 2022 — The European consortium SPOTLIGHT is developing a process that uses sunlight and LEDs to turn carbon dioxide and green hydrogen into clean energy products such as methane gas and methanol liquid fuel. Using a photonic device, the SPOTLIGHT...
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...
Chiral Polymers Take Fast Track to High-Efficiency Circularly Polarized OLEDs
BEIJING, Dec. 30, 2021 — Researchers in the group of Chen Chuanfeng from the Institute of Chemistry of the Chinese Academy of Sciences have demonstrated experimental devices using chiral thermally activated delayed fluorescent (TADF) materials. The devices,...
Materials Expand Volumetric 3D Printing
LIVERMORE, Calif., Nov. 2, 2020 — A new class of materials adapted by researchers at Lawrence Livermore National Laboratory (LLNL) enable nearly instant production through volumetric 3D printing and expanding the range of material properties achievable with the technique. The...
Chemical System Collects, Stores Solar Energy on Molecule for 14 Hours
JENA, Germany, Sept. 29, 2020 — Researchers from the Leibniz Institute of Photonic Technology (Leibniz IPHT) and Friedrich Schiller University have developed a copper complex-based chemical system for molecularly storing solar energy for at least 14 hours. The system decouples...
Ultrashort-Pulse Lasers Leave Their Mark
Sep 24, 2018 — Lasers have long been important in manufacturing for their ability to leave a permanent mark for use in tracking and traceability or as a design element. Increasingly, manufacturers are turning to ultrashort-pulse (USP) lasers in the NIR, visible,...
Gas Purging Keeps UV Systems Healthy
Oct 6, 2014 — Photochemical deposition of organic films is a significant cause of performance loss in ultraviolet systems; when feasible, it can be reduced or eliminated with inert gas purging. Ultraviolet photons are highly energetic – enough to break...
UV Light Sets Crystals in Motion
SINGAPORE, June 3, 2014 — Tiny crystals of a cobalt coordination compound leap, twirl and burst apart like popcorn when exposed to UV light. A team led by researchers at the National University of Singapore suggests the microscopic phenomenon could find macroscopic...
Dual-Catalyst Technique Allows Better Control of Molecules
MADISON, Wis., April 24, 2014 — Chemical reactions usually happen on their own terms. But now, researchers from the University of Wisconsin-Madison have discovered a way to create molecules with controlled chirality using sunlight as one of two catalysts.
LEDs lead to change for some silver
OTTAWA – Adding a touch of silver can improve several photonic endeavors, such as surface-enhanced Raman scattering, surface-enhanced fluorescence and surface plasmon resonance spectroscopy. The metal amplifies the otherwise minute emissions that must be...
Big research on tiny technologies
Dec 1, 2009 — IMEC is one busy research center. Headquartered in Leuven, Belgium, the independent research and development center focuses on nanoelectronics and nanotechnology, partnering with companies, universities and other research institutes. One example of...
3-D PV Cell Folds, Travels
ATLANTA, Nov. 5, 2009 – A new technology for growing nanostructures on optical fibers can be used to make 3-D photovoltaic systems foldable and portable, no longer confined to traditional locations such as rooftops.
Laser Method Unveils Ultrafast Photochemical Reactions
CAMBRIDGE, Mass., Sept. 28, 2006 -- Researchers have made a fundamental advance in understanding how different environments affect chemical reactions by devising a novel way to observe ultrafast photochemical reactions -- reactions induced by a pulse of laser light -- in crystals....
Polymer-Coating Process Uses Pulsed Laser Deposition
CAMDEN, N.J., Aug. 31, 2006 -- A new method of coating polymers that uses a pulsed laser deposition technique has a number of possible applications, including protecting battleship hulls from barnacles. “Barnacles that attach to naval ships are a huge cost to the Navy....
Controlled Switching of GFP Suggests Applications in Optical Data Storage
Jan 1, 2005 — Researchers have devoted a great deal of effort to probing the photophysical and photochemical properties of green fluorescent protein (GFP). Many are especially interested in the transitions between GFP's fluorescent and nonfluorescent (bright and...
New Pump-Probe Technique Improves Imaging Spectroscopy
Jan 1, 2005 — Pump-probe spectroscopy offers details about photochemical or photophysical reactions in a narrow slice of time, but reconstructing a reaction sequence takes a series of exposures, leading to photofatigue of the sample and other logistic problems....
(25 results found)
May 2024
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