A research team led by The Institute of Industrial Science, The University of Tokyo demonstrated that hybrid surface waves called surface phonon-polaritons provide enhanced thermal conductivity in nanoscale membranes. These surface waves can aid in the thermal management of nanostructured devices as conventional cooling methods reach their material-related limits. Surface phonon-polaritons will be particularly useful for heat conduction in silicon-based microelectronics and photonics applications.
A team of researchers at Columbia University and the University of Washington has discovered that a variety of exotic electronic states, including a rare form of magnetism, can arise in a three-layer graphene structure.
Although out of sight to the majority of end users, data centers work behind the scenes to run the internet, businesses, research institutions and more. These data centers depend on high-capacity digital storage, the demand for which continues to accelerate. Researchers created a new storage medium and processes to access it that could prove game changing in this sector. Their material, called epsilon iron oxide, is also very robust so can be used in applications where long-term storage, such as archiving, is necessary.
A team led by the University of Washington reports that carefully constructed stacks of graphene -- a 2D form of carbon -- can exhibit highly correlated electron properties. The team also found evidence that this type of collective behavior likely relates to the emergence of exotic magnetic states.
Measurements in thorium-229 take a step towards the direct laser excitation of an atomic nucleus in this unique isotope
A team of researchers led by Osaka University discovered a novel mechanism called a "microtube implosion," demonstrating the generation of megatesla-order magnetic fields, which is three orders of magnitude higher than those ever experimentally achieved. The underlying physics was revealed by particle simulations using a supercomputer. Their promising findings will open new frontiers in many branches of fundamental physics and applications involving ultrahigh magnetic fields.
A team of scientists led by the Max Born Institute (MBI), Berlin, Germany, and the Massachusetts Institute of Technology (MIT), Cambridge, USA, has demonstrated how tiny magnetization patterns known as skyrmions can be written into a ferromagnetic material faster than previously thought possible. The researchers have clarified how the topology of the magnetic system changes in this process. The findings may inspire new routes how to use magnetic skyrmions in information technology.
Physicists have discovered a much faster approach to create a pattern of spins in a magnet. This 'shortcut' opens a new chapter in topology research. Interestingly, this discovery also offers an additional method to achieve more efficient magnetic data storage. The research will be published on 5 October in Nature Materials.
Efficient and stable blue OLED is still a challenge due to the lack of emitter simultaneously with high efficiency and short excited-state lifetime. A blue emission cerium(III) complex was demonstrated for a high efficiency OLEDs with superior stability. The excellent performance could be assigned to the nanoseconds spin- and parity- allowed 5d?4f transition of Ce3+ ion. Along with adjustable emission color and low cost, cerium(III) complexes would be promising emitters in OLEDs.
Agricultural scientists and engineers at the University of Adelaide have identified a potential new tool for screening cereal crops for frost damage.