Authors: George Rajna
NCCR MARVEL researchers have developed a novel microscopic theory that is able to describe heat transport in very general ways, and applies equally well to ordered or disordered materials such as crystals or glasses and to anything in between.  Physicists have demonstrated that energy quantization can improve the efficiency of a single-atom heat engine to exceed the performance of its classical counterpart.  A solid can serve as a medium for heat and sound wave interactions just like a fluid does for thermoacoustic engines and refrigerators-resulting in leak-free machines that can stay operating longer.  Like watchmakers choosing superior materials to build a fine timepiece, physicists at the Centre for Quantum Technologies (CQT) at the National University of Singapore have singled out an atom that could allow them to build better atomic clocks.  Yale physicists have uncovered hints of a time crystal-a form of matter that "ticks" when exposed to an electromagnetic pulse-in the last place they expected: a crystal you might find in a child's toy.  The research shows that concentrated electrolytes in solution affect hydrogen bonding, ion interactions, and coordination geometries in currently unpredictable ways. 
Comments: 44 Pages.
[v1] 2019-05-29 07:35:56
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