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Uncovering the Connection Between Negative Stiffness and Magnetic Domain Walls

  • By Aude Marjolin
  • 19 July 2017

Nature doesn't like having interfaces—this is why bubbles like to be round, and the surface of a pond settles to flat as long as it's not disturbed. These trends minimize the total amount of interface (or surface) that is present. As an exception to this behavior, certain materials are known to have a property, called negative stiffness, where the interface prefers to become distorted, or wavy, even without any external stimulation. Interfaces with negative stiffness have been considered in crystals before, but the characteristic has now also been found in modern magnetism.

The Center for Research Computing Acquires New, Powerful Computing Systems

  • By Aude Marjolin
  • 19 July 2017

The new Center for Reserach Computing (CRC), formerly known as the Center for Simulation and Modeling (SaM), is among the first in the nation to have access to Intel’s powerful new computing systems. The system will dramatically increase the speed of computation available to researchers through Pitt’s Center for Research Computing, said Ralph Roskies, associate vice provost for research computing.

Novel Theory Developed by Giannis Mpourmpakis Explains How Metal Nanoparticles Form

  • By Aude Marjolin
  • 12 July 2017

Although scientists have for decades been able to synthesize nanoparticles in the lab, the process is mostly trial and error, and how the formation actually takes place is obscure. However, a study recently published in Nature Communications entitled "“Thermodynamic Stability of Ligand-Protected Metal Nanoclusters” by Giannis Mpourmpakis and PhD candidate Michael G. Taylor explains how metal nanoparticles form. The research, completed in Mpourmpakis’ Computer-Aided Nano and Energy Lab (C.A.N.E.LA.), is funded through a National Science Foundation CAREER award and bridges previous research focused on designing nanoparticles for catalytic applications.

Watching

Magnetization of nanoscale magnets by ultrashort electron pulses and chiral Majorana fermion modes

Storified by PQI Communication ·
Fri, Jul 21 2017 13:49:31

Observation and measurement of ultra-fast vortex dynamics in superconductors, how to identify new examples of topological materials, ultracold chemical reaction, and manipulating electron spins without loss of information

Storified by PQI Communication ·
Thu, Jul 20 2017 14:48:02

New quantum phase with atomic magnets quantum-entangled in sets of four, fluorinated h-BN as a magnetic semiconductor, and electrical generation of exciton-polaritons

Storified by PQI Communication ·
Tue, Jul 18 2017 20:47:33

New understanding of quantum cooling, "fooling" Heisenberg's uncertainty principle, wave nature of light in super-slow motion, and towards classically driven blind quantum computation

Storified by PQI Communication ·
Fri, Jul 14 2017 15:17:25

Control of thermal and electrical currents by quantum observation, quantum oscillations in graphene, controlling and measuring electron spin voltage, and a multispecies trapped-ion node for quantum networking

Storified by PQI Communication ·
Fri, Jul 14 2017 15:07:18