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Plasmon resonant particles, methods and apparatus

  • US 6,180,415 B1
  • Filed: 02/20/1998
  • Issued: 01/30/2001
  • Est. Priority Date: 02/20/1997
  • Status: Expired due to Term
First Claim
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1. A method of interrogating a field having a plurality of plasmon or resonant entities (PREs) distributed therein, comprising;

  • illuminating the field with an optical light source, detecting a spectral emission characteristic of individual PREs and other light scattering entities in the field, constructing a computer image of the positions and values of the emission spectral characteristic of individual PREs and other light-scattering entities present in the field, and discriminating PREs with a selected spectral signature from other light-scattering entities based on detected spectral characteristic values unique to the selected-signature PREs, to provide information about the field.

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