{"title":"Soft lithography for flexible structural color films by laser interference lithography","authors":"","doi":"10.1016/j.optlastec.2024.111689","DOIUrl":null,"url":null,"abstract":"<div><p>To face the challenge of the fast, large area, and high-precision manufacturing for flexible structural color films, a strategy based on soft lithography to fabricate polydimethylsiloxane (PDMS) structural color films was proposed in this paper. The large area periodic structures as the template were obtained by means of laser interference lithography. After soft lithography, SEM images showed that the morphology and period are completely inversed with the templates. The colors of the films have an obvious angle dependence which was proved by an angle-resolved spectrometer(ARM), in which the peak position of the reflectance spectrum changed ∼267 nm as the angle increasing from 10° to 25° for the period ∼2.126 μm. In addition, the peaks of reflectance spectra have also an obvious redshift of ∼162 nm with increasing elongation ratio up to 40 %. Furthermore, the reflection peak of the flexible film will stably change between ∼697 nm and ∼617 nm before and after stretching from 0 to 40 % for 11 times. In conclusion, we explore an efficient way with the fast, large area, and high precision to fabricate flexible structural color films in the atmospheric environment, showing the potential application in optical anti-counterfeiting and mechanical sensor.</p></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":null,"pages":null},"PeriodicalIF":4.6000,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics and Laser Technology","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0030399224011472","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
To face the challenge of the fast, large area, and high-precision manufacturing for flexible structural color films, a strategy based on soft lithography to fabricate polydimethylsiloxane (PDMS) structural color films was proposed in this paper. The large area periodic structures as the template were obtained by means of laser interference lithography. After soft lithography, SEM images showed that the morphology and period are completely inversed with the templates. The colors of the films have an obvious angle dependence which was proved by an angle-resolved spectrometer(ARM), in which the peak position of the reflectance spectrum changed ∼267 nm as the angle increasing from 10° to 25° for the period ∼2.126 μm. In addition, the peaks of reflectance spectra have also an obvious redshift of ∼162 nm with increasing elongation ratio up to 40 %. Furthermore, the reflection peak of the flexible film will stably change between ∼697 nm and ∼617 nm before and after stretching from 0 to 40 % for 11 times. In conclusion, we explore an efficient way with the fast, large area, and high precision to fabricate flexible structural color films in the atmospheric environment, showing the potential application in optical anti-counterfeiting and mechanical sensor.
期刊介绍:
Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication.
The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas:
•development in all types of lasers
•developments in optoelectronic devices and photonics
•developments in new photonics and optical concepts
•developments in conventional optics, optical instruments and components
•techniques of optical metrology, including interferometry and optical fibre sensors
•LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow
•applications of lasers to materials processing, optical NDT display (including holography) and optical communication
•research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume)
•developments in optical computing and optical information processing
•developments in new optical materials
•developments in new optical characterization methods and techniques
•developments in quantum optics
•developments in light assisted micro and nanofabrication methods and techniques
•developments in nanophotonics and biophotonics
•developments in imaging processing and systems