Nano-gap grating devices with enhanced optical properties and methods of fabrication

US10073200B2 · kind B2 · utility

Assignee

• The Curators of the University of Missouri · US

Inventors

• Shubhra Gangopadhyay · Lubbock, US
• Venu Korampally · Aurora, US
• Sagnik Basuray · Columbia, US
• Kunal Bhatnagar · Chandler, US
• Avinash Pathak · Columbia, US
• Arnab Ghosh · Lubbock, US
• Drew Edwin Menke · Berger, US
• Joseph Mathai · Columbia, US
• Peter Cornish · Columbia, US
• Keshab Gangopadhyay · Columbia, US
• Aaron Wood · Columbia, US

Key dates

• Filing date: Nov 15, 2013
• Grant date: Sep 11, 2018
• Expiry date: May 26, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B5/1861
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A method of producing a grating structure comprises the steps of forming a stamp from flexible plastic material, the stamp including a negative of a periodic grating pattern on a first surface; forming an ink by applying a polymer film to the stamp, the ink including a first surface and an opposing second surface, wherein the first surface of the ink contacts the first surface of the stamp such that the ink retains a positive of the periodic grating pattern; placing the ink and the stamp on a substrate such that the second surface of the ink contacts an upper surface of the substrate; and removing the stamp from the ink by applying a tensional force to one edge of the stamp.