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Nano Lett. 2005 Oct;5(10):1978-81.

Electric field tuning of plasmonic response of nanodot array in liquid crystal matrix.

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Division of Engineering and Department of Physics, Brown University, 182 Hope Street, Box D, Providence, RI 02912, USA.


In this work we demonstrate the feasibility of electric-field tuning of the plasmonic spectrum of a novel gold nanodot array in a liquid crystal matrix. As opposed to previously reported microscopically observed near-field spectral tuning of individual gold nanoparticles, this system exhibits macroscopic far-field spectral tuning. The nanodot-liquid crystal matrix also displays strong anisotropic absorption characteristics, which can be effectively described as a collective ensemble within a composite matrix in the lateral dimension and a group of noninteracting individual particles in the normal direction. The effective medium model and the Mie theory are employed to describe the experimental results.

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