Materials

Some articles on materials, material:

Organic Field-effect Transistor - Materials
... One common feature of OFET materials is the inclusion of an aromatic or otherwise conjugated π-electron system, facilitating the delocalization of orbital ... OFETs employing many aromatic and conjugated materials as the active semiconducting layer have been reported, including small molecules such as rubrene, tetracene, pentacene, diindenoperylene, perylenediimides ... articles exist documenting the development of these materials ...
Obscene Publications Act 1959 - Impact and Assessment
... Firstly, the test meant that "sting" operations where the police purchased "obscene" materials were not considered sufficient evidence of publication, since the police were not considered easy to "corrupt ... Secondly, the offer of such materials for sale was not held to be publication, since it was merely an invitation to treat ... obscene articles for publication or sale" and also extended "obscene materials" to cover photograph negatives ...
Wide Bandgap Semiconductors - Material Properties - Bandgap
... of the coulombic potential determines the bandgap of a material, and the size of atoms and electronegativities are two factors that determine the bandgap ... Materials with small atoms and strong, electronegative atomic bonds are associated with wide bandgaps ... on the periodic table are more likely to be wide bandgap materials ...
Drill Bit - Characteristics - Materials
... Many different materials are used for or on drill bits, depending on the required application ... Many hard materials, such as carbides, are much more brittle than steel, and are far more subject to breaking, particularly if the drill is not held at a very constant angle to the workpiece, e.g ... steel bits due to the properties conferred by hardening and tempering the material ...

Famous quotes containing the word materials:

    What is most interesting and valuable in it, however, is not the materials for the history of Pontiac, or Braddock, or the Northwest, which it furnishes; not the annals of the country, but the natural facts, or perennials, which are ever without date. When out of history the truth shall be extracted, it will have shed its dates like withered leaves.
    Henry David Thoreau (1817–1862)

    Realism to be effective must be a matter of selection. ... genius chooses its materials with a view to their beauty and effectiveness; mere talent copies what it thinks is nature, only to find it has been deceived by the external grossness of things.
    Julia Marlowe (1866–1950)

    The competent leader of men cares little for the niceties of other peoples’ characters: he cares much—everything—for the exterior uses to which they may be put.... These are men to be moved. How should he move them? He supplies the power; others simply the materials on which that power operates.
    Woodrow Wilson (1856–1924)