Fabrication of multilayer nanograting structures

US10490679B2 · kind B2 · utility

Assignee

• The Curators of the University of Missouri · US

Inventors

• Shubhra Gangopadhyay · Lubbock, US
• Sangho Bok · Washington, US
• Samiullah Pathan · Columbia, US
• Cherian Joseph Mathai · Columbia, US
• Sagnik Basuray · Columbia, US
• Keshab Gangopadhyay · Columbia, US
• Biyan Chen · Columbia, US
• Sheila Grant · Columbia, US
• Aaron Wood · Columbia, US

Key dates

• Filing date: Oct 12, 2018
• Grant date: Nov 26, 2019
• Expiry date: Oct 12, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B82Y40/00
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Provided are nanograting structures and methods of fabrication thereof that allow for stable, robust gratings and nanostructure embedded gratings that enhance electromagnetic field, fluorescence, and photothermal coupling through surface plasmon or, photonic resonance. The gratings produced exhibit long term stability of the grating structure and improved shelf life without degradation of the properties such as fluorescence enhancement. Embodiments of the invention build nanograting structures layer-by-layer to optimize structural and optical properties and to enhance durability.