Sunday, March 15, 2009

US Patent 7502106 - Nanoparticle enhanced breathalyzer

This patent from Honeywell teaches how nanoparticles can be used to enhance the operation of breath analysis devices such as those used to determine blood alcohol content. Claim 1 reads:

1. A sample analyzer comprising:

a chamber having a first end, a second end, a first input and a second input;

a light source situated at the first end; and

a detector situated at the first end; and wherein:

the first input is for an injection of nanoparticles;

the second input is for an insertion of a sample having molecules; and

the nanoparticles are for attachment of the molecules, the nanoparticles becoming aerosolized nanoparticles and providing a floating surface for surface enhanced Raman scattering by molecules attached to the aerosolized nanoparticles.