polytype


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polytype

(ˈpɒlɪˌtaɪp)
n
1. (Chemistry) crystallog a crystal occurring in more than one form
2. (Printing, Lithography & Bookbinding) printing a printing cast
vb (tr)
(Printing, Lithography & Bookbinding) printing to produce by use of a polytype
References in periodicals archive ?
Petersburg Electrical Engineering University) summarizes available data on radiation effects formed in 6H-, 4H-, and 3C-Sic under irradiation with electrons, neutrons, and some kind of ions, and the effects of intrinsic defects and radiation defects in the SiC crystal lattice on the properties of the epitaxial layers themselves, such as their doping level and polytype homogeneity.
Pilot version of the Techma-4 printing press in Fribourg, Switzerland was recently revealed by Wifag-Polytype, which came into existence in June, with the merging of Wifag and Polytype Converting.
He had clients among the poets and fiction writers of high-bohemian Greenwich Village and, first at Polytype Press on West 8th Street in Manhattan and subsequently at Golden Eagle Press in suburban Mt.
The problem is that there are over 200 different types of crystal that you can grow, and you can easily change from one polytype to another if you're not careful.
The simulations show that the distribution of the electrical field strength by the increase of reverse biasing moves towards the cubic polytype (n-3C-SiC) side of the heterojunction and therefore by the charge carriers transport the tunneling mechanism increases compared to thermal emission.
Other areas examined are the growth of 4H-SiC single crystals on 6H-SiC seeds with an open backside by PVT method, characterization of 6H-SiC single crystals using different source materials, observation of polytype switches during SiC PVT bulk growth by high energy X-ray diffraction, and nucleation and growth of 3C-SiC single crystals from the vapor phase.
Petersburg, from the offprints prepared in the polytype style of the 1830s to the small size of the original drawings, intended to reproduce the pocket-size effect of the almanacs of the 1820s (Benua 1980, 396).
The so-called clay micas can have stacking sequence of structural layers producing three different monoclinic shifts: a) in the same direction when a one-layer polytype forms (1M = 1-layer monoclinic polytype); b) disordered one-layer polytype (1Md) giving least number of X-ray [d.
It is the latter polytype of the As-dominant species pearceite which forms a series with the much commoner Sb-dominant polybasite .
For the preparation of SiC/PPy composites, [alpha]-SiC mainly 6H polytype of SiC with two polar surfaces, that is, silicon atoms terminated and carbon atoms terminated surface, was used.
His purpose is to unearth what he calls a polytype text, a text that is scriptible, writerly, open to the play of meanings.
Peter Schweizer of Polytype SA discussed degassing requirements for curtain coating.