US 2008/0166706 A1 · Novel gold nanoparticle aggregates and their applications

Abstract

The invention is drawn to novel gold nanoparticles that are used in a dual optical method for sensitive and selective detection of antigens. The gold nanoparticle aggregates are synthesized from gold hydrochloride and sulfur salts in an aqueous solution. The aggregates can be selectively sized using a spectral notch filter that results in an improved product with versatile uses. The gold nanoparticles can also be used in improved optical communications devices.

Claims30

Dependent claims

A chemical sensor comprising a plurality of particles, each particle comprising:

a core, a shell having at least one surface and having contact with the core and wherein the shell comprises a sulfur-oxygen molecular species, and wherein the particle has been selectively sized using a notch filter and electromagnetic radiation, the electromagnetic radiation having a spectral wavelength of between about 350 nm and about 1075 nm.

Dependencies are inferred from the claim text.

Facts

Application

11/396,098Filed 30 Mar 2006

Priority

30 Mar 2005

Published

10 Jul 2008

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

G01N 33/54346
The carrier being characterised by its particulate form: nanoparticles
G01N 21/658
Raman scattering: enhancement Raman, e.g. surface plasmons
G01N 33/54313
With an insoluble carrier for immobilising immunochemicals: the carrier being characterised by its particulate form
G01N 33/553
The carrier being inorganic: metal or metal coated

Novel gold nanoparticle aggregates and their applications

Life of this patent

Novel gold nanoparticle aggregates and their applications

Life of this patent

Abstract

Claims30