NIMS, the University of Tokyo, Niigata University and RIKEN jointly designed a multilayered metamaterial that realizes ultra-narrowband wavelength-selective thermal emission by combining the machine learning (Bayesian optimization) and thermal emission properties calculations (electromagnetic calculation). The joint team then experimentally fabricated the designed metamaterial and verified the performance. These results may facilitate the development of highly efficient energy devices.
International research team developed a new method of synthesizing miniature light sources. It is based on a special laser producing millions of nanolasers from a perovskite film in a few minutes. Such lasers look like small disks, work at room temperature and have an tunable emission wavelength from 550 to 800 nm. The high speed and good reproducibility of this method make it promising for the industry. The study was published in ACS Nano.
Understanding how defects can affect ground-state properties, promote phase transitions, or enable entirely new functionalities in some strongly correlated oxides has become a subject of major interest in the field of design and discovery of novel functional materials. SrMnO3 (SMO) is a particularly interesting example, but better characterization is needed. MARVEL researchers have now a developed a method that may lead to more accurate predictions of the energetics of defects associated with in-gap states in semiconductors or insulators.
In a new study, researchers at the University of Illinois at Urbana-Champaign have designed and demonstrated a novel type of polymer demonstrating a switchable thermal conductivity controlled by light. The material has the potential to route the conduction of heat on-demand and enable new, smarter, ways to manage heat.
Electric currents drive all our electronic devices. The emerging field of spintronics looks to replace electric currents with what are known as spin currents. Researchers from the University of Tokyo have made a breakthrough in this area. Their discovery of the magnetic spin Hall effect could lead to low-power, high-speed and high-capacity devices. They have created sample devices which can further research into potential applications.
Physicists from the University of Luxembourg and their research partners have demonstrated for the first time in a comprehensive study how different magnetic materials can be examined using neutron scattering techniques. The scientists have published their insights in 'Reviews of Modern Physics,' the renowned science journal of the American Physical Society.
The use of solar and wind energy must be doubled to meet the world's demand for clean energy over the next 30 years. Catalysts that can ensure the storage of solar and wind energy in fuels and chemicals will therefore play an increasingly important role. Now researchers at the University of Copenhagen and DTU have developed a method that makes it easier to find better and cheaper catalysts, with their results having recently been published in the journal Joule.
A technology that has maximized space intensity by eliminating color filter from an image sensor has been developed. The National Research Foundation of Korea (Chairman Jung Hye Rho) announced that DGIST Professor Dae Sung Chung's research team developed a color filter-free full-color image sensor using an interferometer electrode.
DGIST Professor Jae Eun Jang's team, plasmonic nano structure developed a technology that generates colorless and transparent biomaterials. Will contribute to biomaterial detection for brain disease research & treatment.
For the first time researchers have demonstrated a new way to perform functions essential to future computation three orders of magnitude faster than current commercial devices. The team lead by Associate Professor Shinobu Ohya, created a nanoscale spintronic semiconductor device that can partially switch between specific magnetic states trillions of times a second (terahertz -- THz), far beyond frequencies of devices at present.