Crystal Perfection of Particle Monolayer at the Air–Water Interface

Shinotsuka, Kei; Kajita, Yasuhito; Hongo, Koki; Hatta, Y.

doi:10.1021/acs.langmuir.5b03151

Cited by 36 publications

(28 citation statements)

References 35 publications

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“…The self‐assemble process is shown as the following series of steps: (i) presetting the substrates underneath the water and connecting the injectors with the MPI system (Figure B(a)); (ii) self‐assembly of colloidal PS nanospheres on the water surface fabricated via the MPI system (Figure B(b)); (iii) formation of a dense self‐assembled PS monolayer consisting of colloidal crystals on the entire water surface (Figure B(c)); transferring of PS monolayer onto the preset substrates (Figure B(d)). In order to decrease the defect concentration of the MCCs fabricated by LB method, two different techniques of the ultrasonic annealing and the barrier‐sway can be employed as illustrated in Figure C . The setup of “ultrasonic annealing” is consisted of an ultrasonic generator and a transducer.…”

Section: Controllable Self‐assembly Of Colloidal Spheressupporting

confidence: 89%

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Self‐Assembly of Colloidal Spheres toward Fabrication of Hierarchical and Periodic Nanostructures for Technological Applications

Liang

Dong

2019

Adv Materials Technologies

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to potentially fabricate numerous hierarchical and periodic micro/nanostructure arrays in a large scale. [1][2][3][4][5] Importantly, these ordered micro/nanostructure arrays are essential active components for many technological applications, ranging from data storage, [6] solar cells, [7][8][9] plasmonics to functional coatings, and many others. [10][11][12][13][14][15] Combined with the recent advance in colloidal science, the colloidal spheres with uniform morphology and excellent disperse stability can be further realized by a number of methods, which include the suspension, [16,17] dispersion polymerization, [18,19] emulsion, [20,21] and Stöber techniques. [22] The diameter of colloidal spheres can also be precisely controlled in a wide range, spanning from several micrometers all the way to down to tens of nanometers. Uniquely, these colloidal spheres can be self-assembled into 2D monolayers and 3D periodic multilayers, where they are subsequently utilized as the versatile masks (e.g., optical lens) to achieve fabrication templates by simple surface patterning onto underlying substrates, facilitating the construction of micro/nanostructure arrays with excellent tunability. [23][24][25] Since then, these 2D monolayer colloidal crystals (MCCs) and 3D multilayers have attracted extensive attention for many of their further utilizations. For instance, by using the oxygen plasma and reactive ion etching (RIE) methods, the periodicity, the size, and the shape of individual spheres of MCCs are accurately controlled. [26,27] With further modification, etching, and decoration, the MCCs can be exploited as either the masks for metal catalyst deposition to generate hierarchical and periodic nanostructures on underlying substrates, or the templates for the growth of patterned nanostructures. [28,29] Furthermore, these MCCs can also be utilized as optical lens to construct the periodic nanostructures with photosensitive materials, broadening the preparing routes of hierarchical and periodic nanostructures. [30] In order to prepare the periodic nanostructures, the fabrication process, including the self-assembly of MCCs, the morphological modification of MCCs, and the functionalized decoration, is commonly referred as the nanosphere lithography (NSL). [31][32][33] As compared with conventional lithographic techniques, such as photolithography, [34,35] electron beam lithography, [36] and focused ion beam lithography, [37] NSL can distinctively reduce the manufacturing cost and complexity, The current research status on the self-assembly of colloidal spheres for the fabrication of various hierarchical and periodic nanostructures is summarized, in which these structures exhibit unique properties for different technological applications in plasmonics, surface-enhanced Raman scattering, solar cells, and others. The fundamentals of colloidal self-assembly are first introduced. After which, the functions of the obtained monolayer of colloidal spheres (e.g., nanosphere monolayer) to act as the patterned mask for the subsequent ...

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Section: Controllable Self‐assembly Of Colloidal Spheressupporting

confidence: 89%

Section: Controllable Self‐assembly Of Colloidal Spheresmentioning

confidence: 99%

Self‐Assembly of Colloidal Spheres toward Fabrication of Hierarchical and Periodic Nanostructures for Technological Applications

Liang

Dong

2019

Adv Materials Technologies

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“…When combined with other fabrication methods, PS monolayers prepared by MPI can be utilized as colloidal lithography masks to produce various nanophotonic texturing on c‐Si thin films . Moreover, the ultrasonic annealing and the capillary can assist the self‐assembly of nanospheres, increasing the area of crystal domains . Especially, Park et al have developed a simple and cost‐efficient process of unidirectional rubbing to assemble spherical particles into a single‐crystal monolayer on a flat or curved substrate.…”

Section: Tailoring Ordered Photonic Micro/nanostructurementioning

confidence: 99%

Ordered Hybrid Micro/Nanostructures and Their Optical Applications

Zhang

Yang

2019

Advanced Optical Materials

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known that the optical properties related refractive index is an important parameter for ordered micro/nanostructures. Commonly, organic substances own lower refraction. Aiming at improving which, researchers introduce highly polarizable heteroatoms or rigid aromatic moieties. However, the maximum of refractive index is limited to 1.54-1.60, [3] which is far from the requirements of rapidly developing technologies. [4] Incorporation of inorganic materials with relative higher refractive index (TiO 2 , ZnO, ZnS, graphene nanoparticles, and Si) into an organic matrix is capable of enlarging the optical parameters to a great extent, generally up to a value of 2.5-3.0, [5] which offers more chances for the fabrication of novel ordered micro/nanostructures. Photonic crystals (PCs), for example, regularly arrange materials of high and low dielectric constants on the order of the wavelength of light. The photonic bandgap (PBG) prohibiting the propagation of light results from the sufficient dielectric contrast and appropriate geometry. The structural color therefore generates. Manipulating the propagation of light via micro/nanostructures meets the requirements for modern optical devices. [6] As a result, more efforts have been applied to devices consisting of micro/nanostructures of multiple materials, such as synthetic materials and biomaterials. [7] Besides optical properties, the strength and toughness of ordered micro/nanostructures are also improved based on the hybrid material. Meanwhile, the electric and magnetic features of inorganic dopants can also exactly assist the adjustability. Therefore, the hybrid can significantly improve performance compared with its constituent.This review emphasizes on applications sought (sensing, imaging, communication, photoelectricity, etc.), the materials used (silicon, metals, polymers, etc.), and the preparation methods employed (patterning, etching, deposition, etc.). We present an attempt to classify and compare some intensively reported micro/nanostructures of hybrid materials and/or heterogeneous structures, along with recent important developments in literatures. It is organized as follows: First, we summarize some fundamental physical principles and concepts in brief. Second, we particularly highlight artificial and natural laminar structures, represented by Bragg stacks (BSs) and butterfly wings, which have drawn much attention in the latest literatures. Next, the focus shifts to the preparation routes and materials adoption of colloidal crystals and their derived periodic arrays. A few examples of highly functional materials Recent advances in manufacturing and technology of ordered hybrid micro/ nanostructures have acquired many breakthroughs. With the aid of the cooperation of various materials, the ordered hybrid micro/nanostructures exhibit high-quality performance and mechanical stability and allow the modulation on the light-matter interaction in a controllable manner, thereby enabling a wide variety of innovative applications. This article reviews recent deve...

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“…Similarly, a gravity‐assisted convective self‐assembly method was developed to fabricate centimeter‐sized uniform 2D colloidal crystals . A large‐area self‐assembly of nanospheres can also be obtained via ultrasonic annealing and barrier‐sway process, a low‐cost micropropulsive injection method and capillary‐modulated self‐assembly . Besides, assembled monolayers of hydrophilic particles on water surfaces was investigated .…”

Section: New Development In Colloidal Crystal Masks and Applicationsmentioning

confidence: 99%

Advanced Colloidal Lithography Beyond Surface Patterning

Möhwald

Wang

et al. 2016

Adv Materials Inter

102

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This progress report presents an overview of recent development of colloidal lithography (CL) and its applications in fabrication of various nanostructures consisted of orderly arranged, dots, holes, bowls, cones, pillars, rings, shells and triangles. These structures have been widely exploited in various fields, including plasmonics, optics, wettability, sensors, solar cells, organic light-emitting diode (OLEDs), biology and many others. The recent successes in the technical applications of the nanostructures fabricated via CL will be summarized. Hopefully, the present review will inspire more ingenious designs and execution of CL for advanced, smart applications

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Crystal Perfection of Particle Monolayer at the Air–Water Interface

Cited by 36 publications

References 35 publications

Self‐Assembly of Colloidal Spheres toward Fabrication of Hierarchical and Periodic Nanostructures for Technological Applications

Self‐Assembly of Colloidal Spheres toward Fabrication of Hierarchical and Periodic Nanostructures for Technological Applications

Ordered Hybrid Micro/Nanostructures and Their Optical Applications

Advanced Colloidal Lithography Beyond Surface Patterning

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