Cooling nanotube resonators with electrons
Researchers report on a technique that uses electron transport to cool a nanomechanical resonator near the quantum regime.
Read moreSpintronics
A close up on the real world: Atomic migration under ambient conditions
Researchers have reported an environmental transmission electron microscopy technique that has allowed in situ visualization of the atomic changes of a metal surface in an electric field under ambient conditions. The activation of oxygen gas molecules by electron tunneling was found to result in atomic migration that could be followed progressively. It is hoped that the tunneling-electron-attached-gas process will provide valuable insight for the development of nanoparticle catalyst and quantum material applications.
Read moreNovel, high-performance diodes and transistors
Today's computer processors are increasingly pushed to their limits due to their physical properties. Novel materials could be the solution. Physicists have investigated if and how these materials might be developed. They have created, tested and filed a patent for a concept that utilizes the latest findings from the field of spintronics.
Read moreRare 'Lazarus superconductivity' observed in promising, rediscovered material
A team of researchers has observed a rare phenomenon called re-entrant superconductivity in the material uranium ditelluride. Nicknamed 'Lazarus superconductivity,' the phenomenon occurs when a superconducting state arises, breaks down, then re-emerges in a material due to a change in a specific parameter — in this case, the application of a very strong magnetic field. The discovery furthers the case for uranium ditelluride as a promising material for use in quantum computers.
Read moreModified quantum dots capture more energy from light and lose less to heat
Scientists have synthesized magnetically-doped quantum dots that capture the kinetic energy of electrons created by ultraviolet light before it's wasted as heat.
Read moreAxion particle spotted in solid-state crystal
Scientists have spotted a famously elusive particle: The axion – first predicted 42 years ago as an elementary particle in extensions of the standard model of particle physics.
Read moreBacteria trapped — and terminated — by graphene filter
Chemists transform their laser-induced graphene into an air filter that not only traps pathogens but also kills them with a small blast of electricity.
Read morePhysicists unlock the mystery of thermionic emission in graphene
Researchers discover a new theory that paves the way for the design of better graphene electronics and energy converters.
Read morePicoscience and a plethora of new materials
The revolutionary tech discoveries of the next few decades may come from new materials so small they make nanomaterials look like lumpy behemoths. These materials will be designed and refined at the picometer scale, which is a thousand times smaller than a nanometer. A new study moves picoscience in a new direction: taking elements from the periodic table and tinkering with them at the subatomic level to tease out new materials.
Read moreThe fast dance of electron spins
Metal complexes show a fascinating behavior in their interactions with light, which for example is utilized in organic light emitting diodes, solar cells, quantum computers, or even in cancer therapy. In many of these applications, the electron spin, a kind of inherent rotation of the electrons, plays an important role. Researchers succeeded in simulating the extremely fast spin flip processes that are triggered by the light absorption of metal complexes.
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