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Results 531 - 540 of 1242 for semiconductors
  • Article - 12 Sep 2002
    The discover, occurence and production of yttrium are outlined. Key properties are covered and applications of the pure metal and important ytrrium-containing compounds are described. A detialed...
  • Article - 5 Mar 2002
    Researchers can now control DNA biomolecules with radio waves. The ultimate goal of this work will be to use biological machines to perform tasks on a molecular scale.
  • Article - 11 Jan 2002
    The optical properties of titanium dioxide (TiO2) enhance its role as a pigment and in photocatalytic applications, driving innovation in materials science.
  • Article - 18 Dec 2001
    Dysprosium (Dy) is a chemical element belonging to the actinide series. In 1950, Spedding and colleagues isolated the element using techniques like metallographic reduction and ion-exchange...
  • Article - 3 Oct 2001
    Mullite is the mineralogical name for the only chemically stable intermediate phase in the SiO2–Al2O3 system. The mineral rarely occurs in its natural form, and can be found on the Isle of Mull off...
  • Article - 5 Sep 2001
    Excellent resistance to weathering, staining and chemical attack. Exhibits very slow burning and low permeability to vapour. Is usually only available as a film.
  • Article - 29 Jul 2001
    Tin (Sn) is mostly found in cassiterite (SnO2) and has been known since ancient times. It is obtained by reducing the ore with coal in a reverberatory furnace.
  • Article - 17 Jul 2001
    Sir Humphrey Davy discovered barium as an element in 1808. In its elemental form it is soft and silvery white resembling lead. It belongs to the alkaline earth group and is chemically similar to...
  • Article - 3 Apr 2001
    Although beryllia is a toxic ceramic in powder form, it has a number of properties that make it useful in industries ranging from electronics, to nuclear applications through to military and...
  • Article - 21 Feb 2001
    Ceramic springs have been around as scientific novelty items since the 1970s, produced by a special processing technology. An early example, made at Imperial Chemical Industries (ICI) in the UK in the...

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