Measuring particle size distribution during the grinding process

A further step toward a stable measurement method for nanoparticles used in industry

26-Jul-2024 - How pharmaceuticals act, how efficient catalysts are and how effective and accurate printing inks function all depend on the size of the nanoparticles they contain. However, there are as of yet no methods for monitoring the particle size distribution during grinding processes. In the EU-funded ...

Luminous Molecules

Chemists smooth the path for new and better light sources

13-Apr-2023 - Twisted molecules play an important role in the development of organic light-emitting diodes. A team of chemists has managed to create these compounds with exactly the three-dimensional structure that they wanted. In so doing, they are smoothing the path for new and better light sources. They ...

Nanoantennas directing a bright future: White LEDs may soon be dethroned

Titanium oxides found to significantly increase efficiency and photoluminescence

23-Dec-2022 - White LEDs may soon be dethroned as the world's go-to light source by an alternative with a much better sense of direction. As a next-generation optical control technology, aphotonic crystalornanoantennais a two-dimensional structure in which nano-sized particles are arranged periodically on ...

A sustainable path for energy-demanding photochemistry

Novel strategy for the generation of highly energetic UV light

05-Dec-2022 - Many photochemical processes rely on UV light from inefficient or toxic light sources that the LED technology cannot replace for technical reasons. An international team of scientists led by Professor Christoph Kerzig of Johannes Gutenberg University Mainz (JGU) in Germany and Professor Nobuhiro ...

‘Smart plastic’ material is step forward toward soft, flexible robotics and electronics

A new plastic-like material can be manipulated to be soft and stretchy or hard and rigid with only the application of a catalyst and visible light

21-Oct-2022 - Inspired by living things from trees to shellfish, researchers at The University of Texas at Austin set out to create a plastic much like many life forms that are hard and rigid in some places and soft and stretchy in others­. Their success — a first, using only light and a catalyst to change ...

Bright, stable, and easy to recycle lighting

Low-cost blue and white light emitting electrochemical cells developed

11-May-2022 - A low-cost and easy-to-manufacture lighting technology can be made with light-emitting electrochemical cells. Such cells are thin-film electronic and ionic devices that generate light after a low voltage is applied. Researchers at the Technical University of Munich (TUM) and the University of ...

World’s first LED lights developed from rice husks

19-Apr-2022 - Milling rice to separate the grain from the husks produces about 100 million tons of rice husk waste globally each year. Scientists searching for a scalable method to fabricate quantum dots have developed a way to recycle rice husks to create the first silicon quantum dot (QD) LED light. Their ...

New light source: A million times brighter than the sun

PhD thesis investigated application of a special white-light laser for semiconductor industry and microbiology

14-Feb-2022 - A new high-performance white-light laser is expected to speed up quality control in the semiconductor industry and provide closer monitoring of toxicity tests in microbiology. In one step, this laser enables the two-sided characterization of surfaces and can be integrated into production chains. ...

„Crazy“ light emitters

Unusual quantum phenomenon discovered

31-Jan-2022 - A highly unusual movement of light emitting particles in atomically-thin semiconductors was experimentally confirmed by scientists from the Würzburg–Dresden Cluster of Excellence ct.qmat–Complexity and Topology in Quantum Matter. Electronic quasiparticles, known as excitons, seemed to move in ...

Ultra-thin crystals as light sources in lasers

Laser emission demonstrated at room temperature: semiconductors consisting of three atomic layers could form the basis for innovative lasers

10-Nov-2021 - In an article published in the scientific journal Nature Communications, an international team led by Oldenburg physicists Dr. Hangyon Shan, Prof. Dr Christian Schneider and Dr. Carlos Anton-Solanas reports that crystals consisting of just three atomic layers can emit laser-like light at room ...