The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 2002
Filed:
Feb. 12, 1999
Mrinal Thakur, Auburn, AL (US);
Other;
Abstract
A method for preparation of single crystal films of organic second order optical materials, the films having controlled orientation and thickness. This method produces films of excellent optical quality and with large nonlinearities suitable for device applications. The material of interest is introduced into the interface of two optically flat solid substrates. The substrate surfaces are pretreated so that they are hydrophilic. The material is formed as a liquid phase (highly concentrated solution) in the interface. An external pressure is applied that brings the substrates close together and a shear is applied by moving one substrate with respect to the other while the substrates are held under a constant pressure. As a consequence of these interactions, oriented molecular clusters or nuclei are formed with the molecules organized in a specific direction with respect to the substrate-surface.