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:
Aug. 04, 1992
Filed:
Feb. 27, 1990
Cheng-Kuei Jen, Brossard, CA;
Michael Sayer, Kingston, CA;
Guanghua Yi, Kingston, CA;
Jean F Bussiere, St. Bruno, CA;
Queen's University at Kingston, Kingston, CA;
Abstract
Efficient, simple, miniature and economical piezoelectric and ultrasonic devices employing optical fibers coated with lead-zirconate-titanate (PZT) thin piezoelectric and ferroelectric films are described. The PZT thin films are fabricated chemically by a sol-gel method. Optical fibers can be dipped into the PZT solution, and followed by an annealing and an electric poling process in order to achieve good piezoelectricity in the coated PZT films. This coating process can be devised as an on-line method and thus coating length can be larger than meters. Due to the long coating length, high piezoelectricity, miniature and flexible nature, devices using optical fibers may be used for medical, telecommunication and sensor applications.