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Volume 3 Issue 7, July 2004

50-μm-wide rotor blades from a micro gas turbine engine

Cover design by Karen Moore, image by Felice Frankel

Volume 3 Issue 7

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Editorial

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Correspondence

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Research News

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News & Views

  • High-temperature superconductors could revolutionize the electrical power industry. New work shows how the introduction of BaZrO3 nanoparticles during growth leads to a dramatic increase of the critical current in the 'second generation' superconductor YBa2Cu3O7.

    • David Christen
    News & Views

  • Nanocrystal quantum dots are excellent emitters of light, but energizing that emission electrically has proved difficult. A newly discovered non-radiative energy-transfer process that allows electron–hole pairs to be generated in quantum wells, and then transferred into quantum dots, could lead to a new generation of ultra-high-efficiency light sources for use at scales ranging from nano-optics to a city block.

    • Mark Stockman
    News & Views

  • The interaction of twin walls with defects influences many of the properties of ferroelectric and superconducting materials. A breakthrough in experimental methods allows the direct determination of twin-wall widths for the first time.

    • E. K. H. Salje
    • W. T. Lee
    News & Views

  • The use of direct laser photolithography for creating complex three-dimensional structures in photocurable polymer resist has great potential for the construction of micromechanical and photonic devices. A new study pushes this technique towards its limits to explore just how far its potential might reach.

    • Jean-Michel Lourtioz
    News & Views
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