What are 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 wavefunctions ... OFETs employing many aromatic and conjugated materials as the active semiconducting layer have been reported, including small molecules such as rubrene, tetracene ... Many review articles exist documenting the development of these materials ...
Wide Bandgap Semiconductors - Material Properties - Bandgap
... 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 ... high 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 ... conferred by hardening and tempering the material ...
Obscene Publications Act 1959 - Impact and Assessment
... 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 ... or sale" and also extended "obscene materials" to cover photograph negatives ...

Famous quotes containing the word materials:

    In how few words, for instance, the Greeks would have told the story of Abelard and Heloise, making but a sentence of our classical dictionary.... We moderns, on the other hand, collect only the raw materials of biography and history, “memoirs to serve for a history,” which is but materials to serve for a mythology.
    Henry David Thoreau (1817–1862)

    Our job is now clear. All Americans must be prepared to make, on a 24 hour schedule, every war weapon possible and the war factory line will use men and materials which will bring, the war effort to every man, woman, and child in America. All one hundred thirty million of us will be needed to answer the sunrise stealth of the Sabbath Day Assassins.
    Lyndon Baines Johnson (1908–1973)

    In daily life what distinguishes the master is the using those materials he has, instead of looking about for what are more renowned, or what others have used well.
    Ralph Waldo Emerson (1803–1882)