Improved KNN Thin Film Production

Case ID:
OSU-18-18
Web Published:
11/30/2018
Description:

Technology Description

 

Oregon State University is seeking a licensee or industry collaborator for an improved KNN based thin film production process. The newly described methods overcome the difficulties in chemical vapor, sol-gel, sputtering, and pulsed-laser deposition methods because it can be performed cost effectively, in air, using less energy, and with the scalability that standard production methods lack. In addition to these advantages, the thin films produced by this method have superior properties in degree of orientation and surface roughness, allowing the film to be aligned along the polarization direction. These properties are very challenging to attain in the field, and they result in high quality films.

 

Features & Benefits

 

  • Cost effective synthesis in air, scalable, and a smaller energy requirement for production
  • Improved high quality thin films

 

Applications

 

  • KNN thin films
  • Piezoelectric devices, including sensors and actuators

 

Background of Invention

 

K(1-x)Na(x)NbO3, or KNN, thin films have multiple current limitations to their use that stem from production constraints. Sputtering and pulsed-laser production require expensive equipment and high energy input. Pulsed-laser and sol-gel deposition have no scalability, and sol-gel has air sensitivity and needs carcinogenic and toxic organic solvents. The use of KNN films is extensive, and may include use in piezoelectrics as sensors and actuators. In addition to the aforementioned physical constraints of these methods of production, some improved properties of the thin films are difficult to attain because crystallographic orientation is not maximized, leading to lower quality thin films.

 

Status

 

US patent pending (United States provisional patent application filed)

 

Patent Information:
For Information, Contact:
Joe Christison
IP & Licensing Manager
Oregon State University
541-737-9016
joe.christison@oregonstate.edu
Inventors:
Michelle Dolgos
Dylan Fast
May Nyman
Brady Gibbons
Matthew Clark
Keywords:
Actuator
Chemical Synthesis
piezoelectric
sensor
thin film
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