An unlikely competitor for diamond as the best thermal conductor

An unlikely material, cubic boron arsenide, could deliver an extraordinarily high thermal conductivity – on par with the industry standard set by costly diamond – researchers report in the current issue of the journal ...

First germanium laser brings us closer to 'optical computers'

(PhysOrg.com) -- MIT researchers have demonstrated the first laser built from germanium that can produce wavelengths of light useful for optical communication. It’s also the first germanium laser to operate at room temperature. ...

Scientists build world's first anti-laser

More than 50 years after the invention of the laser, scientists at Yale University have built the world's first anti-laser, in which incoming beams of light interfere with one another in such a way as to perfectly cancel ...

Nanowires grown on graphene have surprising structure

(Phys.org) —When a team of University of Illinois engineers set out to grow nanowires of a compound semiconductor on top of a sheet of graphene, they did not expect to discover a new paradigm of epitaxy.

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Arsenide

Arsenide is an arsenic anion with the charge −3. The trianion is formed by the reduction of arsenic by three electrons. For example heating arsenic powder with excess sodium gives sodium arsenide (Na3As). The anions have no existence in solution since they are extremely basic. These solid salts have very high lattice energies.

An arsenide (compound) is a compound with arsenic in oxidation state −3, but the term is used loosely. The mineral sperrylite (PtAs2) is called a platinum arsenide, but the formal oxidation state for arsenic is −2. because the solid is usually described as Pt4+,As24-. The description of gallium arsenide (GaAs) is more straightforward since it features isolated arsenic centers.

Arsenides are toxic because of the inherent toxicity of arsenic and all of its compounds.

Metal arsenides react with acids to form highly toxic arsine gas.

See category for a list.

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