Facile fabrication of centimeter-scale stripes with inverse-opal photonic crystals structure and analysis of formation mechanism

Ding, Chen; Hu, Jianchen; Yuan, Wei; Du, De-Zhuang; Yang, Ya; Chen, Guoqiang

doi:10.1039/c6ra07314j

Cited by 3 publications

(4 citation statements)

References 49 publications

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“…2) The second thrust leverages the existence of these defects to develop unique patterned structures and utilize them for potential applications (i.e., transparent conductive films, microfluidics, and sensor arrays). [36][37][38] However, many of these studies often underexplore the underlying physics of these defects, which can cause the samples to be difficult to replicate in different conditions. Small 2019, 15, 1804523 Figure 1.…”

Section: Self-assemblymentioning

confidence: 99%

“…Despite numerous efforts to fabricate perfect large‐scale colloidal crystals, it has been impossible to eliminate structural defects entirely. 2) The second thrust leverages the existence of these defects to develop unique patterned structures and utilize them for potential applications (i.e., transparent conductive films, microfluidics, and sensor arrays) . However, many of these studies often underexplore the underlying physics of these defects, which can cause the samples to be difficult to replicate in different conditions.…”

Section: Introductionmentioning

confidence: 99%

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The Control of Colloidal Grain Boundaries through Evaporative Vertical Self‐Assembly

Suh

Pham

Shao

et al. 2019

Small

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Self‐assembly continuously gains attention as an excellent method to create novel nanoscale structures with a wide range of applications in photonics, optoelectronics, biomedical engineering, and heat transfer applications. However, self‐assembly is governed by a diversity of complex interparticle forces that cause fabricating defectless large scale (>1 cm) colloidal crystals, or opals, to be a daunting challenge. Despite numerous efforts to find an optimal method that offers the perfect colloidal crystal by minimizing defects, it has been difficult to provide physical interpretations that govern the development of defects such as grain boundaries. This study reports the control over grain domains and intentional defect characteristics that develop during evaporative vertical deposition. The degree of particle crystallinity and evaporation conditions is shown to govern the grain domain characteristics, such as shapes and sizes. In particular, the grains fabricated with 300 and 600 nm sphere diameters can be tuned into single‐column structures exceeding ≈1 mm by elevating heating temperature up to 93 °C. The understanding of self‐assembly physics presented in this work will enable the fabrication of novel self‐assembled structures with high periodicity and offer fundamental groundworks for developing large‐scale crack‐free structures.

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Section: Self-assemblymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Control of Colloidal Grain Boundaries through Evaporative Vertical Self‐Assembly

Suh

Pham

Shao

et al. 2019

Small

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“…Moreover, in the process of color rendering, people not only see the light wave of stop band position, but also background light [6,7]. So, the inverse opal materials greatly restrict their further application in pigment due to the problem of weak color and low color saturation [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Preparation and modification of inverse opal zirconia pigment

Liu

Wang

et al. 2020

SCI SINTER

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Inverse opal zirconia pigment prepared by traditional process has the disadvantages of low color saturation and variegated color which restrict its further application. In this work, the inverse opal zirconia pigment was prepared by colloidal crystal template fabricated using polystyrene microspheres with particle size of 340 ? 10 nm as raw material and further modified by sintering at 600 ?C for 2 h with heating rate of 2 ?C/min in an atmosphere tube of 0.8 L min-1 nitrogen flow. The morphology, phase crystallinity and color performance of the inverse opal zirconia pigment before and after modification were characterized in detail and the modified mechanism was investigated. The results showed that morphology of the inverse opal zirconia pigment before modification was basically a highly ordered porous structure, the phase was relatively pure, and the overall appearance was variegated color. Some parts of the samples exhibited low color saturation and different areas showed various colors, indicating that the samples had certain angle dependence. After modification, the samples showed bigger-area single blue-green color, suggesting that the color saturation was significantly improved and the angle dependence was reduced evidently. The mechanism for modification was that the zirconia precursor and polystyrene templates were carbonized when sintered in nitrogen atmosphere. The generated in-situ carbon remained in the samples and absorbed the tray background light, which significantly suppressed the multiple scattering of structural defects.

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“…Spherical polymeric particles have been applied in nanotechnology because of their easy preparation and formation of self-structured arrangements with good definition at micrometric scale. There are reports in the literature of the use of polymer particles for the manufacture of photonic crystals 30 , drug delivery systems 31 and solar cells 32 based on their ability to form self structured arrangements in the size scale required for that application. Polystyrene has been one of the most widely used polymers in the preparation of these nanomaterials since the original work of Holland et al 33,34 .…”

Section: Introductionmentioning

confidence: 99%

Analysis of Styrene Polymerization Without Surfactant and N2 Gas in Cylindrical Flask.

et al. 2018

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The conditions of chemical synthesis can be crucial for polymerization of styrene in such a way that it can be produced latex beads at nanometric range (ϕ < 400nm). In this work, it will be analyzed how the absence of N 2 and surfactant will result in colloidal particles with high affinity to agglomerate forming two kinds of nanostructured assemblies: colloidal crystals and nanowires. Four syntheses were realized and four parameters were changed: temperature, impeller speed, and initiator and styrene concentrations. The dispersion was filtered and coated on glass slides by evaporation induced selfassembly (EISA) process. Morphology and topography were observed at Scanning Electron Microscopy (SEM) and Atomic Force Microscope (AFM) respectively. They show how the synthesis conditions play a vital a role on the formation of self assembly nanostructures that can be applied as templates for sensors and biomaterials devices.

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Facile fabrication of centimeter-scale stripes with inverse-opal photonic crystals structure and analysis of formation mechanism

Abstract: A facile fabrication process for centimeter-scale colloidal photonic crystal stripe is developed through self-assembling polymer microspheres and silica colloidal nanoparticles. With the aid of sintering, porous-ordered microstructure forms.

Cited by 3 publications

References 49 publications

The Control of Colloidal Grain Boundaries through Evaporative Vertical Self‐Assembly

The Control of Colloidal Grain Boundaries through Evaporative Vertical Self‐Assembly

Preparation and modification of inverse opal zirconia pigment

Analysis of Styrene Polymerization Without Surfactant and N2 Gas in Cylindrical Flask.

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