Method for monitoring the crystallization of an organic material from a liquid

US6800487B1 · kind B1 · utility

Assignee

• The Regents of the University of California · US

Inventors

• Blaine W. Asay · Los Alamos, US
• Bryan Henson · Los Alamos, US
• Robert K. Sander · Salida, US
• Jeanne M. Robinson · Los Alamos, US
• Steven F. Son · Los Alamos, US
• Peter M. Dickson · Los Alamos, US

Key dates

• Filing date: Sep 26, 2002
• Grant date: Oct 5, 2004
• Expiry date: Dec 26, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N21/75
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Method for monitoring the crystallization of at least one organic material from a liquid. According to the method, a liquid having at least one organic material capable of existing in at least one non-centrosymmetric phase is prepared. The liquid is interrogated with a laser beam at a chosen wavelength. As at least a portion of the at least one organic material crystallizes from the liquid, the intensity of any light scattered by the crystallized material at a wavelength equal to one-half the chosen wavelength of the interrogating laser beam is monitored. If the intensity of this scattered light, increases, then the crystals that form include at least one non-cetrosymmetric phase.