Recent advancement on micro-/nano-spherical lens photolithography based on monolayer colloidal crystals

Zhang, Ziming; Geng, Chong; Hao, Zhibiao; Wei, Tongbo; Yan, Qingfeng

doi:10.1016/j.cis.2015.11.012

Cited by 56 publications

(36 citation statements)

References 207 publications

(250 reference statements)

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“…While rafts can deform similarly to elastic sheets [6], displaying wrinkling instabilities when compressed [7], they also display granular properties such as local fluidization [8] or jamming [9,10] unique to these interfacial structures. More generally, understanding the mechanical properties of these particle-laden interfaces is key since they can be observed and used in many natural situations [11,12] and have found countless innovative and broad range technological applications, such as in encapsulation [13,14], flotation [15], emulsion [16], and remediation processes [5], in surface functionalization [17,18], or for the production of new materials [13,[19][20][21]. In this Letter, we investigate the behavior of a buoyancydriven assembly of dense athermal grains, and study the global shape, stability, and dynamics of granular rafts.…”

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confidence: 99%

Sinking a Granular Raft

et al. 2017

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We report experiments that yield new insights on the behavior of granular rafts at an oil-water interface. We show that these particle aggregates can float or sink depending on dimensionless parameters taking into account the particle densities and size and the densities of the two fluids. We characterize the raft shape and stability and propose a model to predict its shape and maximum length to remain afloat. Finally we find that wrinkles and folds appear along the raft due to compression by its own weight, which can trigger destabilization. These features are characteristics of an elastic instability, which we discuss, including the limitations of our model.

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confidence: 99%

Sinking a Granular Raft

et al. 2017

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“…Colloidal photonic crystals (PCs) have attracted great interest due to their special light manipulation properties [1,2], and have showed promising applications in various fields such as chemical and biological sensors [3,4], optic devices [5], coating materials [6], and catalytic supports [7]. Particularly, polymer colloidal PCs have demonstrated important applications ranging from photonic papers [8], full-color displays [9] and UV protection [10], to responsive optic devices.…”

Section: Introductionmentioning

confidence: 99%

Photonic Crystals with an Eye Pattern Similar to Peacock Tail Feathers

Wang

Meng

et al. 2016

Crystals

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Abstract:A facile fabrication of photonic crystals (PCs) with an eye pattern similar to peacock tail feathers has been demonstrated by self-assembly of colloidal particles in a sandwich mode. The sandwich mode is formed by superhydrophilic flat substrate sandwiching the poly(styrene-methyl methacrylate-arylic acid) (Poly(St-MMA-AA)) latex suspension (2 wt%) by the hydrophobic one. The patterns are characterized by optical microscopy images, reflection spectra, and the relative scanning electronic microscope images. This work will provide beneficial help for the understanding of the self-assembly process of colloidal crystals.

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“…This is a maskless patterning process that enables the fabrication of nanopores or nanopillars through the use of conventional photolithography tools; using UV light focused by PS or silica nanospheres . Wu et al .…”

Section: Other Applied or Promising Techniquesmentioning

confidence: 99%

Fabrication techniques enabling ultrathin nanostructured membranes for separations

Mireles

Gaborski

2017

Electrophoresis

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The fabrication of nanostructured materials is an area of continuous improvement and innovative techniques that fulfill the demand of many fields of research and development. The continuously decreasing size of the smallest patternable feature has expanded the catalog of methods enabling the fabrication of nanostructured materials. Several of these nanofabrication techniques have sprouted from applications requiring nanoporous membranes such as molecular separations, cell culture, and plasmonics. This review summarizes methods that successfully produce through-pores in ultrathin films exhibiting an approximate pore size to thickness ratio of one, which has been shown to be beneficial due to high permeability and improved separation potential. The material reviewed includes large-area, parallel, and affordable approaches such as self-organizing polymers, nanosphere lithography, anodization, nanoimprint lithography as well as others such as solid phase crystallization and nanosphere lens lithography. The aim of this review is to provide a set of inexpensive fabrication techniques to produce nanostructured materials exhibiting pores ranging from 10 to 350 nm and exhibiting a pore size to thickness ratio close to one. The fabrication methods described in this work have reported the successful manufacture of nanoporous membranes exhibiting the ideal characteristics to improve selectivity and permeability when applied as separation media in ultrafiltration.

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Recent advancement on micro-/nano-spherical lens photolithography based on monolayer colloidal crystals

Cited by 56 publications

References 207 publications

Sinking a Granular Raft

Sinking a Granular Raft

Photonic Crystals with an Eye Pattern Similar to Peacock Tail Feathers

Fabrication techniques enabling ultrathin nanostructured membranes for separations

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