Flexible photonic crystals with color-changing strain response
US10690946B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 2016 |
| Grant date | Jun 23, 2020 |
| Priority date | — |
| Expiry date | Apr 2, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Flexible photonic crystal structures capable of changing color in response to strain are described. Methods for forming two-dimensional and three-dimensional flexible photonic crystal structures are described. In some aspects, the flexible photonic crystal structures include an array of holes or voids formed within a flexible material. The flexible material changes dimensions of the array when the flexible photonic crystal structures is stretched, pulled, pushed or bent. In some aspects, the flexible photonic crystal structures include an array of features made of a first material, such as a first type of polymer, embedded within a matrix material made of a second material, such as a second type of polymer. The flexible photonic crystal structures can be used in the manufacture of consumer products, such as electronic products, electronic product accessories, thin films, flexible displays and wearable products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.