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US 6,587,206 B1Granted
Method for characterizing particles in a liquid medium using interferometry
AssigneeLucent Technologies Inc.
InventorsAristide Dogariu, Gabriel Popescu
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Abstract
In a method for characterizing particles in a colloidal suspension, during a period in which the particles undergo sedimentation, changes are measured in the intensity among interference patterns generated by combining first and second partially coherent radiation portions. Each radiation portion is generated from the same source. The first portion includes a component transmitted through a fraction of the suspension, and the second portion is transmitted through a reference path.
Claims9
A method of characterizing particles in a liquid medium, comprising:
- a. introducing the liquid medium into a container, wherein the liquid medium is stationary,
- b. allowing particles in the liquid medium to settle,
- c. exposing the particles in the liquid medium to a sampling beam, the sampling beam being stationary with respect to the container,
- d. measuring, during a period in which the particles undergo sedimentation, changes in the intensity among interference patterns generated by combining first and second partially coherent radiation portions, each generated from the same source, the first portion including a component of the sampling beam after exposure to the particles, the second portion transmitted through a reference path.
1 more element
Dependencies are inferred from the claim text.