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Volume 5 Issue 4, April 2006

A polarized optical micrograph of a hexagonal zine chloride crystal

Cover design by Karen Moore

Letter by Martin et al.

Volume 5 Issue 4

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Editorial

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Commentary

  • There is no doubt that the possible hazards associated with nanomaterials are significant, and that concern is valid; but how do we begin to address the challenges that lie ahead? Expanding our scope and increasing the diversity of subject matter is the key to attaining the knowledge we will need to protect against the new range of nanohazards.

    • Amanda S. Barnard
    Commentary
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Research News

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News & Views

  • With silicon microelectronics approaching fundamental limits, new concepts for high-density memory devices are sought. The individual switching of dislocations in oxides may offer just the right alternative.

    • Angus Kingon
    News & Views

  • Pushing a sewing needle into a colloidal crystal may seem a crude experiment. On the contrary, combined with laser diffraction microscopy and confocal microscopy, it provides a valuable analogy to nanoindentation and promises a deeper understanding of the mechanical response of crystalline materials.

    • Subra Suresh
    News & Views

  • The long spin-coherence time of electrons in semiconductor quantum dots has strong potential for quantum information processing. A new study shows a way to further enhance it by controlling the interaction of electrons with light.

    • David Gershoni
    News & Views

  • The successful demonstration that magnetic flux lines in a superconductor can be moved by time-dependent drives instead of spatially asymmetric structures suggests a versatile new approach to control the motion of nanoscale objects.

    • Akira Tonomura
    News & Views

  • Real-time video-microscopy reveals a surprising growth mechanism for efficient generation of highly ordered nanoparticle monolayers, implicating a rapidly evaporating — and slightly sticky — liquid–vapour interface.

    • Robert L. Whetten
    News & Views
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