scholarly journals Facile Fabrication of Amorphous Photonic Structures with Non-Iridescent and Highly-Stable Structural Color on Textile Substrates

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2500 ◽  
Author(s):  
Yichen Li ◽  
Liqin Chai ◽  
Xiaohui Wang ◽  
Lan Zhou ◽  
Qinguo Fan ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Stability ◽  
Spray Coating ◽  
Color Stability ◽  
Physical Structure ◽  
Structural Color ◽  
Photonic Structures ◽  
One Step ◽  
Facile Fabrication ◽  
External Forces

Amorphous photonic structures with non-iridescent and highly-stable structural color were fabricated via a simple one-step spray-coating technique. With this strategy, the obtained films on textile substrates presented short-ordered and amorphous photonic structures (APSs) similar to the amorphous nanostructures of avian feathers. The structural color presented the same hue when viewed at different angles and could be well controlled by varying the diameters of the SiO2 nanospheres. The prepared fabrics with structural color exhibited high color stability due to stability in both the assembled physical structure and the refractive index. The high stability of the assembled physical structure was attributed to the cementing effect of Poly(methylmethacrylate-butylacrylate) P(MMA-BA) existing between textile substrate and SiO2 nanospheres and among SiO2 nanospheres, while the high stability in the refractive index was contributed by the liquid-resistance achieved by both the surface roughness and the low-surface-energy of the as-sprayed APSs. With the resistances to external forces and liquid invasion, the non-iridescent brilliant structural color of the as-prepared fabrics could be kept steady. In this study, an approach of fabricating APSs with non-iridescent and stable structural color was established to enhance its potential application in structural coloration of textiles, and other color-related smart textiles. .

A facile one-step spray-coating process for the fabrication of a superhydrophobic attapulgite coated mesh for use in oil/water separation

RSC Advances ◽  
2015 ◽  
Vol 5 (66) ◽  
pp. 53802-53808 ◽  
Author(s):  
Jian Li ◽  
Long Yan ◽  
Haoyu Li ◽  
Jianping Li ◽  
Fei Zha ◽  
...  
Keyword(s):  
Water Droplet ◽  
Spray Coating ◽  
Separation Mechanism ◽  
Coating Process ◽  
Water Separation ◽  
Oil Water Separation ◽  
One Step ◽  
Oil Water

Superhydrophobic attapulgite coated mesh was used to separate oil/water mixtures efficiently. Besides, the separation mechanism was elaborated by interpreting the different states of water droplet on the surface before and during separation.

scholarly journals Refractive index evaluation of porous silicon using Bragg reflectors

2018 ◽  
Vol 64 (1) ◽  
pp. 72 ◽  
Author(s):  
D. Estrada-Wiese ◽  
J.A. Del Río
Keyword(s):  
Refractive Index ◽  
Porous Silicon ◽  
Simple Procedure ◽  
Merit Function ◽  
Refractive Indices ◽  
Bragg Reflectors ◽  
Photonic Bandgaps ◽  
Photonic Structures ◽  
Index Evaluation

There are two main physical properties needed to fabricate 1D photonic structures and form perfect photonic bandgaps: the quality of thethickness periodicity and the refractive index of their components. Porous silicon (PS) is a nano-structured material widely used to prepare 1Dphotonic crystals due to the ease of tuning its porosity and its refractive index by changing the fabrication conditions. Since the morphologyof PS changes with porosity, the determination of PS’s refractive index is no easy task. To find the optical properties of PS we can usedifferent effective medium approximations (EMA). In this work we propose a method to evaluate the performance of the refractive index ofPS layers to build photonic Bragg reflectors. Through a quality factor we measure the agreement between theory and experiment and thereinpropose a simple procedure to determine the usability of the refractive indices. We test the obtained refractive indices in more complicatedstructures, such as a broadband Vis-NIR mirror, and by means of a Merit function we find a good agreement between theory and experiment.With this study we have proposed quantitative parameters to evaluate the refractive index for PS Bragg reflectors. This procedure could havean impact on the design and fabrication of 1D photonic structures for different applications.

scholarly journals Facile fabrication of porous BiVO4 hollow spheres with improved visible-light photocatalytic properties

RSC Advances ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 6395-6404 ◽  
Author(s):  
Jun Mao ◽  
Qian Wu ◽  
Feifei Tao ◽  
Wen Xu ◽  
Tianjie Hong ◽  
...  
Keyword(s):  
Visible Light ◽  
Porous Structure ◽  
Solution Method ◽  
Hollow Spheres ◽  
Bismuth Vanadate ◽  
Photocatalytic Properties ◽  
One Step ◽  
Facile Fabrication ◽  
Visible Light Photocatalytic

Bismuth vanadate (BiVO4) hollow spheres with porous structure have been successfully fabricated by a one-step wet solution method with no surfactant and template.

scholarly journals Optical Refractive Index Sensors with Plasmonic and Photonic Structures: Promising and Inconvenient Truth

2019 ◽  
Vol 7 (9) ◽  
pp. 1801433 ◽  
Author(s):  
Yi Xu ◽  
Ping Bai ◽  
Xiaodong Zhou ◽  
Yuriy Akimov ◽  
Ching Eng Png ◽  
...  
Keyword(s):  
Refractive Index ◽  
Photonic Structures ◽  
Refractive Index Sensors

scholarly journals A Simple Synthesis of Higher Refractive Index Polymeric Nanocomposite Containing the Pendant ZnS Nanocrystals Capping Different Amount of Mercaptoethanol

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Xinxin Li ◽  
Jinku Xu
Keyword(s):  
Refractive Index ◽  
Glycidyl Methacrylate ◽  
Nmr Spectra ◽  
Synthesis Process ◽  
Polymeric Matrices ◽  
Transparent Films ◽  
H Nmr ◽  
One Step ◽  
Zns Nanocrystals ◽  
Pure Poly

In this paper, three kinds of ZnS NPs capping different amount of mercaptoethanol (ME) were synthesized, and the effect of capping amount on ZnS NPs was studied, indicating that the capping amount of ME on ZnS surface decreases, while ZnS size increases as the decrease of added capping agent in synthesis process, and ZnS NP capping middle amount of ME (~27.7 wt%) shows a highest apparent refractive index (RI) value. ZnS NPs were composited into polymeric matrices by a simple “one-step” thermocuring method characterized by adding a small amount of functional monomer of glycidyl methacrylate (GMA) and solvent of N,N-dimethylformamide (DMF) The reaction mechanism, studied by 1H NMR spectra, indicates that the epoxy of GMA monomer can be easily opened and chemically grafted on ME-capped ZnS surface under the catalysis of DMF, and then copolymerized with other monomer. By the route, ZnS NPs can be composited into pure poly(N,N-dimethylacrylamide)-type (DMA-type), DMA-type copolymer, and DMA-free matrices to fabricate transparent films, and its RI value can be improved by either optimizing capping amount on ZnS surface or increasing ZnS content in the nanocomposites. The RI value of resulting dried nanocomposites can be improved to 1.764 by compositing 80 wt% ZnS capping middle amount of ME.

scholarly journals Facile Fabrication of Superhydrophobic Surface from Fluorinated POSS Acrylate Copolymer via One-Step Breath Figure Method and Its Anti-Corrosion Property

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1953 ◽  
Author(s):  
Meng Liu ◽  
Xiaochen Zhang ◽  
Dong Wang ◽  
Jiaji Cheng ◽  
Xiujiang Pang ◽  
...  
Keyword(s):  
Corrosion Current ◽  
Corrosion Property ◽  
Superhydrophobic Coating ◽  
Acrylate Copolymer ◽  
Breath Figure ◽  
Acrylic Copolymers ◽  
One Step ◽  
Facile Fabrication ◽  
Breath Figure Method ◽  
Oligomeric Silsesquioxane

Novel fluorinated polyhedral oligomeric silsesquioxane (POSS) acrylic copolymers were synthesized by the radical solution polymerization. The superhydrophobic coating was prepared using a one-step breath figure method. Chemical constitution, morphology, hydrophobicity, and anticorrosion ability of as-prepared coatings were investigated by the corresponding equipment. The addition of proper fluorinated POSS can synchronously promote the formation of the micro-nano convex structure and the enrichment of fluorinated groups on the surface. Compared to commercial acrylic coating, the fluorinated POSS coating presented enhanced anticorrosion performance. The impedance was the highest and the corrosion current density was the lowest for superhydrophobic coating with 25 wt % fluorinated POSS.

scholarly journals Metallized hyperbranched polydiyne: a photonic material with a large refractive index tunability and a spin-coatable catalyst for facile fabrication of carbon nanotubes

2007 ◽  
pp. 2584-2586 ◽  
Author(s):  
Matthias Häußler ◽  
Jacky Wing Yip Lam ◽  
Anjun Qin ◽  
Kalvin Ka Chun Tse ◽  
Martin Ka Shing Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Refractive Index ◽  
Photonic Material ◽  
Facile Fabrication

Finite element analysis of fiber optic embedded in thermal spray coating

2017 ◽  
Vol 29 (5) ◽  
pp. 896-904 ◽  
Author(s):  
Duo Yi ◽  
Min Zhang ◽  
Lijuan Gu ◽  
Jianming Yang ◽  
Wenhui Yu
Keyword(s):  
Finite Element ◽  
Refractive Index ◽  
Thermal Spray ◽  
Composite Structure ◽  
Fiber Optic ◽  
Spray Coating ◽  
Element Model ◽  
Thermal Spray Coating ◽  
Mechanical Analysis ◽  
Element Analysis

This study aims to evaluate the thermomechanical behavior of a new composite structure using finite element method. The composite structure consists of the substrate and the thermal spray coating with embedded fiber optic. The temperature evolution of the composite estimated by the finite element model shows good agreement with the experimental recording, which confirms the justifiability of model initialization, and then, the thermal results are applied for the following mechanical analysis. The stress distribution and the variation in refractive index of the embedded fiber are investigated. The results show that the stress level suffered by the embedded fiber is much lower than the yield strength, and the variation in refractive index of the embedded fiber has an insignificant effect on optical transmission, which ensures a good embedding quality of the fiber optic.

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