COMPOSITE SUBSTRATE, LSPR SENSOR INCLUDING THE SAME, METHOD OF USING LSPR SENSOR, AND DETECTION METHOD USING LSPR SENSOR
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United States of America Patent
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Issued Date -
Feb 6, 2014
app pub date -
Jul 31, 2013
filing date -
Jul 31, 2012
priority date (Note) -
Abandoned
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Abstract
A composite substrate is described, including a laminate of a metal fine-particle dispersed layer and a light transmission layer. The metal fine-particle dispersed layer includes a matrix having a solid framework and voids therein, and metal fine-particles immobilized in the solid framework. The solid framework has a 3D network structure of aluminum oxyhydroxide or alumina hydrate. The metal fine-particles have a mean particle diameter of 20 to 100 nm, with 50% or more having particle diameters in the same range. The metal fine-particles are separated from each other, with a distance greater than or equal to the particle diameter of the larger one of neighboring fine-particles. The metal fine-particles have portions exposed in the voids of the matrix, and are 3D-dispersed in the matrix. The metal fine-particle dispersed layer has a thickness of 0.5 to 5 μm and a metal fine-particle content of 22 to 900 μg/cm2.
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