Atoms in a crystal form a regular lattice, in which they can move over small distances from their equilibrium positions. Such phonon excitations are represented by quantum states. A superposition of phonon states defines ...
Condensed Matter
May 30, 2023
0
211
Researchers at SLAC National Accelerator Laboratory captured one of the fastest movements of a molecule called ferricyanide for the first time by combining two ultrafast X-ray spectroscopy techniques. They think their approach ...
Analytical Chemistry
May 5, 2023
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181
Energy efficient LEDs (light emitting diodes) have begun to replace many types of lighting both indoor and outdoor. A key reason for the rise of LEDs has been materials research that greatly improved the quality and intensity ...
Nanophysics
Apr 27, 2023
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11
Photoelectrochemical (PEC) water oxidation reaction has attracted considerable attention in recent years because of its importance in solar energy conversion. For such a sluggish four-hole and four-proton transfer reaction ...
Analytical Chemistry
Apr 18, 2023
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9
Organic light-emitting diodes (OLEDs) play an important role in new-generation flat-panel displays. For ultra-high-definition displays presented in International Telecommunication Union (ITU) Recommendation BT 2020 standard, ...
Optics & Photonics
Dec 16, 2022
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29
Extending the light absorption from ultraviolet (UV) to near-infrared (NIR) region and improving photocarrier separation efficiency of photocatalysts are of vital importance for solar-driven H2 evolution.
Analytical Chemistry
Dec 7, 2022
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17
Nanodiamond materials have great potential as catalysts. Inexpensive nanoparticles made of carbon provide very large surfaces compared to their volume. However, to catalytically accelerate chemical reactions in an aqueous ...
Nanophysics
Nov 30, 2022
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23
Chemistry is increasingly making use of the trick plants can do with photosynthesis: driving chemical reactions that run poorly or do not occur spontaneously at all with light energy. This requires suitable photocatalysts ...
Bio & Medicine
Nov 11, 2022
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131
Chemical reactions that are driven by light offer a powerful tool for chemists who are designing new ways to manufacture pharmaceuticals and other useful compounds. Harnessing this light energy requires photoredox catalysts, ...
Polymers
May 27, 2022
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432
Research at Lund University in Sweden has found a new way to create nano-sized magnetic particles using ultrafast laser light pulses. The discovery could pave the way for new and more energy-efficient technical components ...
General Physics
Apr 25, 2022
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