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Light-emitting silicon-germanium alloys
14-Apr-2020 - For the past 50 years, researchers around the globe have been looking for a way to make lasers with silicon or germanium. A team from the Technical University of Eindhoven (TU/e) and the Technical University of Munich (TUM) has now succeeded in developing a light-emitting, silicon-germanium ...
30-Jul-2019 - Scientists from the Skoltech Center for Photonics and Quantum Materials (CPQM) have developed a novel method to fine-tune the optoelectrical properties of single-walled carbon nanotubes (SWCNT) by applying an aerosolized dopant solution on their surface, thus opening up new avenues for SWCNT ...
16-Jul-2018 - Researchers have demonstrated nanomaterial-based white-light-emitting diodes (LEDs) that exhibit a record luminous efficiency of 105 lumens per watt. Luminous efficiency is a measure of how well a light source uses power to generate light. With further development, the new LEDs could reach ...
27-Jun-2018 - According to Yulia Kuznetsova, defects in nanoparticles play a very serious role in the formation of their real structure and physical properties. Therefore, having learned to create the necessary defects in the required quantities, we can control characteristics of such materials. In other ...
11-Jun-2018 - Yale scientists have created a new type of silicon laser that uses sounds waves to amplify light. In recent years, there has been increasing interest in translating optical technologies -- such as fiber optics and free-space lasers -- into tiny optical or "photonic" integrated circuits. Using ...
07-Jun-2018 - Cheaper and more efficient photonic devices, such as lasers, optical fibers, and other light sources may be possible with confined light that is unaffected by imperfections in the material that confines it, according to new research. A team of physicists from Penn State, the University of ...
24-Apr-2018 - What happens when you excite novel assemblies of nanomaterials using structured light? Joint research between Tampere University of Technology (TUT) (Finland) and University of Tübingen (Germany) has shown that carefully structured light and matching arrangements of metal nanostructures ...
12-Mar-2018 - Now a team of researchers from the University of Bristol, Peking University, Technical University of Denmark, ICFO Spain, PAS, University of Copenhagen and Dr. Jordi Tura from the Theory Division at the Max Planck Institute of Quantum Optics has developed a large-scale integrated ...
Porous polymer films with shape memory
08-Feb-2018 - Whether for separation processes, photovoltaics, catalysis, or electronics, porous polymer membranes are needed in many fields. Membranes with micropores that switch between different shapes and/or sizes would expand the possibilities. Scientists have introduced a process that produces porous ...
29-Jan-2018 - Spintronics in materials of just a few atoms thick is an emerging field in which the 'spin' of electrons is used to process data, rather than the charge. Unfortunately, the spin only lasts for a very short time, making it (as yet) difficult to exploit in electronics. Researchers from the Kavli ...
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