Tenfold improved sensitivity using high refractive-index substrates for surface plasmon sensing

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概要

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• Surface plasmon resonance sensors exploit the high sensitivity to local perturbations of plasma waves in a thin metal layer. These devices have a wide range of applications as biomedical, environmental, industrial, and homeland security. We concentrate on the theoretical aspects of the sensing principle. By calculations at various indexes of refraction we proved that using substrate material of higher index, sensitivity and dynamics range improve conspicuously. Finally, we show experimental data taken using a special transparent ceramic material of exceptionally high index of refraction n=2.04. Tests demonstrate sensitivity about one order of magnitude better than those obtained with conventional BK7 glass.

• 2008-10-27

著者

• MICHELETTO Ruggero

  Frontier Research Program, The Institute of Physical and Chemical Research (RIKEN)

• ミケレット ルジェロ

  理研フロンティア

• Micheletto Ruggero

  Department Of Electronic Science Graduate School Of Engineering Kyoto University

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