Patterning Semiconductor Building Blocks in 2D Crystals
July 22, 2015 — For the first time, researchers have synthesized lateral semiconductor heterojunctions in lithographically patterned arrays within a two-dimensional semiconductor crystal monolayer by a novel process that selectively converted exposed regions of a monolayer of MoSe2 to MoS2 using laser-deposited sulfur.
Guidelines Clarify Origins of Ferroelectric Signals
July 21, 2015 — Recent developments in piezoresponse force microscopy (PFM) and spectroscopy revealed the presence of electromechanical hysteresis loops in a variety of materials including inorganic oxides, polymers and bio systems. This behavior is often (mis)interpreted as evidence of ferroelectricity.
Easy phase transitions spur high piezoelectric responses
July 14, 2015 — Theoretical calculations, based on newly obtained experimental geometries in strained BiFeO3 thin films, predict an almost barrierless transition between co-existing phases. This facile transition provides insight into the origin of the high electromechanical responses found in coexisting phases in this Pb-free material.
HPC Industry Leaders Develop State-of-the-Art Network Communication Framework for Next Generation Programming Models
July 13, 2015 — UCX (Unified Communication – X) will provide platform abstractions supporting various communication technologies for high-performance compute and data platforms
Quantum switch is made in oxide superlattice
July 08, 2015 — Quantum mechanical resonant tunnelling that yields an extremely large ratio (~105) between the high and low resistance states has been realized in a deliberately designed complex-oxide superlattice. This unprecedented discovery through oxide-based quantum wells (QWs) is a stepping-stone to oxide electronics.