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Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene - IOPscience

Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene - IOPscience | Sciences & Technology | Scoop.it

"We have grown an atom-thin, ordered, two-dimensional multi-phase film in situ through germanium molecular beam epitaxy using a gold (111) surface as a substrate. (...)

 

After the successful synthesis of silicene in 2012, which was followed by a surge of studies on elemental, novel two-dimensional (2D) materials beyond graphene, a daunting quest was to obtain germanene, the germanium-based analogue of graphene, already predicted to possibly exist in 2009. Although its fully hydrogenated form, germanane, was fabricated using a wet chemistry method in 2013, germanene has remained elusive. Here we show compelling experimental and theoretical evidence of its synthesis by dry epitaxial growth on a gold (111) surface. (...)"

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Healable Supramolecular Polymers as Organic Metals - Journal of the American Chemical Society (ACS Publications)

Healable Supramolecular Polymers as Organic Metals - Journal of the American Chemical Society (ACS Publications) | Sciences & Technology | Scoop.it

"Organic materials exhibiting metallic behavior are promising for numerous applications ranging from printed nanocircuits to large area electronics. However, the optimization of electronic conduction in organic metals such as charge-transfer salts or doped conjugated polymers requires high crystallinity, which is detrimental to their processability. To overcome this problem, the combination of the electronic properties of metal-like materials with the mechanical properties of soft self-assembled systems is attractive but necessitates the absence of structural defects in a regular lattice (...)"

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SuVolta shows it can cut chip usage power by 50 percent

SuVolta shows it can cut chip usage power by 50 percent | Sciences & Technology | Scoop.it
Fujitsu Semiconductor vouches for the power-saving chip technology.
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Highly conductive organic metal looks promising for disposable electronic devices

Highly conductive organic metal looks promising for disposable electronic devices | Sciences & Technology | Scoop.it

"(Phys.org) —Although organic materials are often used as semiconductors, such as in organic LEDs and organic transistors, organic materials that have an electrical conductivity as high as that of metals are still very scarce. One problem with developing organic metals is that there is a tradeoff in terms of their crystalline structure: a high crystallinity is required for high conductivity, but is detrimental to the materials' processability. (...)"

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Electrostatics do the trick: Simple model describes what happens between organic semiconductors and metals

Electrostatics do the trick: Simple model describes what happens between organic semiconductors and metals | Sciences & Technology | Scoop.it
Organic semiconductors allow for flexible displays, solar cells, and other applications. One common problem in these devices, however, is the interface between the metallic contacts and the organic semiconductor material, where undesirable losses occur. Now researchers have shown what these losses depend upon.

 

From :

Helmholtz-Zentrum Berlin für Materialien und Energie. "Electrostatics do the trick: Simple model describes what happens between organic semiconductors and metals." ScienceDaily. ScienceDaily, 23 June 2014. <www.sciencedaily.com/releases/2014/06/140623104257.htm>.

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