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photoexcitation News
Light Pulses Transform Mott Insulators
WAKO, Japan, March 7, 2019 — Scientists from the RIKEN Cluster for Pioneering Research have used light pulses to transform Mott insulators into materials that can conduct electricity without energy loss. Through numerical simulations, the researchers showed that pulse...
Researchers Demonstrate Ultrafast Conversion of Light into Electricity
KIEL, Germany, Dec. 21, 2018 — A team from Kiel University (CAU) filmed the conversion of light energy into a solid — an exchange that takes place in a matter of femtoseconds (fs) — using an ultrafast camera system developed by the researchers. The team was able to observe the...
Blue Light Excites Retinal, Intercepts Cellular Signaling in the Eye
TOLEDO, Ohio, Aug. 9, 2018 — An optical chemistry research study has shown how blue light from digital devices and the sun can cause the death of retinal molecules, increasing potential for age-related macular degeneration. Photoreceptor chromophore 11-cis retinal (11CR) and...
‘Butterfly Molecule’ System Could Bring New Sensors, More
TALLAHASSEE, Fla., Aug. 29, 2014 — A molecular system could convert photon energy directly to mechanical motions, emit white light and even take your temperature. The system, developed by Florida State University researchers, is based on a molecule that was previously created by Biwu...
New Spectroscopy Technique Probes Photochemical Reactions
BERKELEY, Calif., June 18, 2014 — Photochemical reactions have become key players in high technology, namely in the development of nanomaterials and solar energy systems. Better understanding of these light-triggered processes could lead to more efficient use. A team from Lawrence...
Metamolecules Change Chirality Under Light
BERKELEY, Calif., July 11, 2012 — For the first time, the chirality of artificial molecules has been switched from a right-handed to a left-handed orientation using a light beam. The discovery holds potential for a range of terahertz technology applications, including biomedical...
Chirped Fiber Improves Pulse
BERLIN, Oct. 29, 2008 -- By introducing a radial chirp into a photonic crystal, researchers in Germany and Russia have developed a novel optical fiber that can transmit ultrashort light pulses with very little distortion over extended distances. The fiber could prove useful...
Tiny Crystals Promise Big Benefits for Solar Technologies
Jan 25, 2006 — LOS ALAMOS, N.M., Jan. 25, 2006 -- Los Alamos National Laboratory scientists have discovered that a phenomenon called carrier multiplication, in which semiconductor nanocrystals respond to photons by producing multiple electrons, is applicable to a...
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May 2024
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