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Volume 2 Issue 10, October 2003

Organic molecules encapsulated inside carbon nanotubes tune the electronic conduction properties.

Cover design by Nicky Perry.

Volume 2 Issue 10

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  • Until now, organic semiconductors, such as pentacene, have only allowed the flow of one type of charge. A new study confirms that — like their inorganic counterparts — both positive and negative charges can flow in the same material.

    • Henning Sirringhaus
    News & Views

  • Materials scientists and engineers are still trying to improve on a 2,000-year old technology — paper. The latest developments promise to improve flat-panel displays that are to be viewed in ambient light, like books and newspapers.

    • Alan Sobel
    News & Views

  • The glass transition is a central concept in condensed matter physics, yet for ten years there has been an unresolved debate about what happens when the material thickness reaches nanoscale dimensions. New experiments probe below the surface.

    • Richard A.L. Jones
    News & Views

  • Semiconductors doped with small amounts of magnetic impurities such as Mn invariably exhibit room-temperature ferromagnetism. But we don't yet understand why.

    • Tomasz Dietl
    News & Views

  • Rational design is an oft-touted dream in materials science. The discovery of two new classes of photonic bandgap crystals may herald the systematic mathematical design of new materials.

    • Eli Yablonovitch
    News & Views

  • Covalent metals, such as MgB2 and the alkali-doped fullerenes, form an unusual class of superconductors. The mechanism of superconductivity in a new member of this family — the silicon clathrates — has now been determined.

    • Vincent H. Crespi
    News & Views
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