Patent ID: 7411672

Claim:
A system for determining a change in an attribute of a substance, the system comprising: a microfluidic circuit having a plurality of input channels integral thereto, wherein said substance is provided through a first one of said plurality of input channels; a photon source for providing a first plurality of photons through a second one of said plurality of input channels so as to internally illuminate a portion of said microfluidic circuit containing said substance, wherein said first plurality of photons interact with the substance while an attribute of the substance changes to thereby produce a second plurality of photons; an optical lens for collecting said second plurality of photons; a filter for receiving the collected photons and providing therefrom filtered photons having one or more predetermined wavelengths; and a processor for determining an aspect of the filtered photons wherein the aspect of the filtered photons is a function of the attribute of the substance, to thereby determine a change in the attribute of the substance.