Materials

Some articles on materials, material:

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 ... conferred by hardening and tempering the material ...
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 ... Secondly, the offer of such materials for sale was not held to be publication, since it was merely an invitation to treat ... "possessing obscene articles for publication or sale" and also extended "obscene materials" to cover photograph negatives ...
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, pentacene, diindenoperylene, perylenediimides ... review articles exist documenting the development of these materials ...
Wide Bandgap Semiconductors - Material Properties - Bandgap
... The magnitude 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 ... Elements high on the periodic table are more likely to be wide bandgap materials ...

Famous quotes containing the word materials:

    Artists, whatever their medium, make selections from the abounding materials of life, and organize these selections into works that are under the control of the artist.... In relation to the inclusiveness and literally endless intricacy of life, art is arbitrary, symbolic and abstracted. That is its value and the source of its own kind of order and coherence.
    Jane Jacobs (b. 1916)

    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)

    Though the hen should sit all day, she could lay only one egg, and, besides, would not have picked up materials for another.
    Henry David Thoreau (1817–1862)