Method of preparing flexible deformable photonic crystal material for structural health monitoring
US11161276B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2018 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Apr 18, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y20/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a method of preparing a flexible deformable photonic crystal material for structural health monitoring, comprising the following steps: washing a grating master template; preparing and assembling a mold; obtaining an assembled mold by printing a three-dimensional mold comprising an upper die and a lower die by use of a 3D printing device and installing the grating master template on the three-dimensional mold; obtaining a polydimethylsiloxane (PDMS) one-dimensional photonic crystal film by replicating a one-dimensional grating structure of a surface of the grating master template by pouring PDMS into the assembled mold; finally, obtaining the PDMS one-dimensional photonic crystal film with a one-dimensional photonic crystal structure on a middle surface and protrusion structures at both ends by demolding, wherein the PDMS one-dimensional photonic crystal film is the flexible deformable photonic crystal material. A mechanochromic photonic crystal film is prepared by using a master template with a photonic crystal structure, a process is simple and easy to operate, a preparation period of a mechanochromic material is greatly shortened, and a preparation cost is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.