allotrope


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allotrope

any of two or more physical forms in which an element can exist

allotrope

[′a·lə‚trōp]
(chemistry)
A form of an element showing allotropy.

allotrope

A chemical element that can take on different forms based on the structure of, or the number of atoms in, the molecule. The most common example is carbon. If carbon atoms are bonded in a lattice of four triangular surfaces (tetrahedral), it is a diamond. If the atoms are bonded in sheets of six-sided (hexagonal) lattice, it is graphite. See isotope.
References in periodicals archive ?
Pete Wilson, Project Lead, ALLOTROPE Power Systems says: The funding from CDE allowed us to pursue a technological theory to the point of a successful proof-of-concept, which was otherwise beyond the capability of our organisation.
Allotrope also unveiled it had launched a partner network that will allow cooperation with the solution and software vendors for the Framework development.
Elemental Se has been known to exist in various allotropic forms, as red amorphous form, black vitreous form, three ([alpha], [beta], [gamma]) of red crystalline monoclinic forms and grey/black crystalline hexagonal (also referred to as trigonal) form which is also the most stable form, and some more allotropes are discovered recently (8), (9).
As the very title of Melville's domestic "novel of manners" suggests, Pierre; or, The Ambiguities is a genealogy that is remarkably proleptic of Nietzsche's and Foucault's (28) It is consciously intended to disclose that the ontological rock--(Pierre/Peter)--on which Saddle Meadows, the manorial estate he is destined to inherit, was built, or, to invoke its allotrope, the monument it has become in the wake of the founding of America (the French and Indian Wars and the American Revolution) is, like Mansfield Park, a fiction--an act of discursive violence against the errant dynamics of temporality (its ambiguities)--that conceals the historical violence at its origin.
In 1993, Piggott won a 1m6f maiden on the Aga Khan's Caliandak, and five years later Dettori treated racegoers to one of his flying dismounts, firing his goggles into the crowd and shouting "we've given you what you wanted" after winning the same maiden on Allotrope in the colours of Sheikh Mohammed.
The carbon is then subject to extremely high pressure and heat -1,700C, a process which compresses it into graphite, a carbon allotrope or a structurally different form of carbon.
This famous passage is not lost on Miller, especially given their shared interest in the censored "soot:" This passage's topic shows where Miller's extension and development from his predecessors is most apparent: "the old stable ego:" As with Lawrence, the stable ego is banished by Miller, and while we may allow for a constant libidinal current, its expression is an allotrope, and hence the allotropic self is subject to radical reorientation.
Diamond is just an allotrope of a common chemical agent, but ever since Emperor Maximilian gave Mary of Burgundy a diamond betrothal ring in 1477, nothing has glittered like the king of gems.
60], a novel allotrope of carbon consisting of 60 carbon atoms joined to form a cagelike structure (Kroto et al.
Since that time there has been a tremendous amount of effort poured into the spherical allotrope of carbon.
Tokyo, Japan, Dec 27, 2005 - (JCN) - Toray announced on December 26 that it has developed an innovative technology to improve the durability of photocatalytic coating agents using fullerene, an allotrope of carbon, in collaboration with Riken.
Chemists, physicists, and other physical scientists from Europe, Asia, and North America offer a range of perspectives on the polyyne class of molecules and the related carbon allotrope carbyne.