Author Affiliations
1Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China2Harbin Institute of Technology, Harbin 150001, China3Light, Nanomaterials, Nanotechnologies (L2n), Université de Technologie de Troyes & CNRS ERL 7004, Troyes 10004, France4State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China5Key Laboratory of Energy Conversion and Storage Technologies (Southern University of Science and Technology), Ministry of Education, Shenzhen 518055, Chinashow less
Fig. 1. (a) Experimental setup for fabricating DBR films. (b) Schematic optical interference inside the LC cell via the single-prism configuration.
Fig. 2. Simulated interference patterns with three different incident angles of (a) 7°, (b) 14°, and (c) 21°, respectively.
Fig. 3. Transparency-tested photos for a blue film (), () before and (), () after the cell opening, which were taken from the (), () black and (), () white backgrounds, respectively. Measured transmission and reflection spectra for blue, green, and red films () before and () after the cell opening, respectively.
Fig. 4. (), (), () Camera photos, (), (), () optical microscopic images, and (), (), () SEM images of the ()–() blue, ()–() green, and ()–() red films, respectively.
Fig. 5. Measured and simulated reflection spectra for the blue, green, and red films, respectively.
Fig. 6. Measured spectral changes of the reflection for the (a) blue, (b) green, and (c) red films that infiltrated with methanol, ethanol, -propanol, and -butanol, respectively. (d) Summarized peak and intensity change as the function of the refractive index.
Sample | Total Period (nm) | Polymer Layer Thickness (nm) | Air Layer Thickness (nm) |
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Blue | 350 | 204 | 146 | Green | 458 | 237 | 221 | Red | 663 | 319 | 344 |
|
Table 1. The Estimated Thickness of the Polymer-Rich and Nanopore-Rich Layers for the Blue, Green, and Red Films