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Nature 444, 560-561 (30 November 2006) | doi:10.1038/444560a; Published online 29 November 2006

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Device physics: A terahertz modulator

Mittleman Daniel1

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Tiny metal resonators can be used to create a material with tunable responses to an applied voltage. Combined with a semiconductor substrate, they can be used to control technologically promising terahertz radiation.

Electromagnetic radiation with frequencies lying between the microwave region and the infrared — so-called terahertz radiation — holds great promise for imaging and sensing applications. It is non-ionizing, and therefore causes less damage to biological tissue than conventional, higher-energy X-rays.

  1. Daniel Mittleman is in the Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, Texas 77005, USA.
    Email: daniel@rice.edu

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