Patent ID: 6738139
Filing Date: 2004-05-18
Classification: G01N

Abstract:
A method of determining bulk refractive indices of liquids comprising the steps of:in any functional order practicing steps a, b and c: a) providing a quantity of liquid; b) providing a rigid or semi-rigid object comprising two sides which is roughened on first and second sides thereof; c) providing a source means of electromagnetic radiation, a sample supporting stage and detector means; d) covering the first roughened side of said rigid or semi-rigid object, with a thin film of said liquid; e) placing said rigid or semi-rigid object which has been covered with a thin film of said liquid on said first roughed side thereof, onto the sample supporting stage with said thin film of liquid being directly accessible; f) causing said source means of electromagnetic radiation to provide a beam of electromagnetic radiation and directing it to interact with and reflect from said thin film of liquid on said first roughened side of said rigid or semi-rigid object, and then enter said detector means such that it produces an output in response thereto; g) analyzing resulting detector means output to the end that bulk refractive indicies of the thin film of liquid are determined.