A research team from ITMO University and the Australian National University has discovered that different metasurfaces exhibit the same behavior provided a symmetry breaking is introduced to their unit cells 'meta-atoms'. Asymmetry of meta-atoms results in high-quality (high Q) resonances in the transmittance spectra of metasurfaces. It opens the way to control an optical response, which is highly desirable for practical applications. The results of this research were published in Physical Review Letters.
SiC-based electrical devices degrading will be improved by controlling the semiconductor material deformation with atomic level.
Scientists from Russia found a way of improving the crystal structure prediction algorithms, making the discovery of new compounds multiple times faster.
Scientists at HZB have found evidence that double layers of graphene have a property that may let them conduct current completely without resistance. They probed the band structure at BESSY II with extremely high resolution ARPES and could identify a flat area at a surprising location.
Using an X-ray technique available at the National Synchrotron Light Source II (NSLS-II), scientists found that the metal-insulator transition in the correlated material magnetite is a two-step process.
Excited photo-emitters can cooperate and radiate simultaneously, a phenomenon called superfluorescence. Researchers from Empa and ETH Zurich, together with colleagues from IBM Research Zurich, have recently been able to create this effect with long-range ordered nanocrystal superlattices. This discovery could enable future developments in LED lighting, quantum sensing, quantum communication and future quantum computing. The study has just been published in the renowned journal Nature.
Generating complex multi-principle element TMDCs essential for the future development of new generations of quantum, electronic, and energy conversion materials is difficult.
Researchers at Linköping University, Sweden, are working to develop a method to convert water and carbon dioxide to the renewable energy of the future, using the energy from the sun and graphene applied to the surface of cubic silicon carbide. They have now taken an important step towards this goal, and developed a method that makes it possible to produce graphene with several layers in a tightly controlled process.
New materials are being synthesized by twisting and stacking atomically thin layers. To bring it all under one roof, physicists Nathaniel Gabor of UC Riverside, and Justin C. W. Song of Nanyang Technological University, Singapore, propose this field of research be called "electron quantum metamaterials." They have just published a perspective article in Nature Nanotechnology, in which they highlight the potential of engineering synthetic periodic arrays with feature sizes below the wavelength of an electron.
Scientists from ITMO University and Lebedev Physical Institute of the Russian Academy of Sciences proposed a new microwave antenna that creates a uniform magnetic field in large volume. It is capable for uniform and coherent addressing of the electronic spins of an ensemble of nanodiamond structure defects. This can be used to create super-sensitive magnetic field detectors of a new generation for magnetoencephalography in the study and diagnosis of epilepsy and other diseases. The results are published in JETP Letters.