Ordered 2D Colloidal Photonic Crystals on Gold Substrates by Surfactant‐Assisted Fast‐Rate Dip Coating

Armstrong, Eileen; Khunsin, Worawut; Osiak, Michal; Blömker, Martin; Torres, C. M. Sotomayor; O’Dwyer, Colm

doi:10.1002/smll.201303616

Cited by 59 publications

(54 citation statements)

References 59 publications

(91 reference statements)

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“…27,28 There are a number of discrete angles (b) for a given groove spacing (d) where constructive interference occurs between diffracted light, The planar grating equation can be used in calculating the theoretical dispersion of incident light diffracted from a 2D artificial opal.…”

Section: B 2d Opals and Ordered Structures -Planar Dielectric Gratinmentioning

confidence: 99%

“…28,[64][65][66][67][68][69][70][71][72][73] Several methods have been investigated towards improving the order of dip-coated colloidal crystals, for example, Khunsin et al investigated the effect of perturbative noise-like acoustic waves on colloidal crystal growth during dip-coating ( Fig. 28,[64][65][66][67][68][69][70][71][72][73] Several methods have been investigated towards improving the order of dip-coated colloidal crystals, for example, Khunsin et al investigated the effect of perturbative noise-like acoustic waves on colloidal crystal growth during dip-coating ( Fig.…”

Section: Colloidal Self-assemblymentioning

confidence: 99%

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Artificial opal photonic crystals and inverse opal structures – fundamentals and applications from optics to energy storage

2015

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Photonic crystals (PhCs) influence the propagation of light by their periodic variation in dielectric contrast or refractive index. This review outlines the attractive optical qualities inherent to most PhCs namely the presence of full or partial photonic band gaps and the possibilities they present towards the inhibition of spontaneous emission and the localization of light. Colloidal self-assembly of polymer or silica spheres is one of the most favoured and low cost methods for the formation of PhCs as artificial opals. The state of the art in growth methods currently used for colloidal self-assembly are discussed and the use of these structures for the formation of inverse opal architectures is then presented. Inverse opal structures with their porous and interconnected architecture span several technological arenasoptics and optoelectronics, energy storage, communications, sensor and biological applications. This review presents several of these applications and an accessible overview of the physics of photonic crystal optics that may be useful for opal and inverse opal researchers in general, with a particular emphasis on the recent use of these three-dimensional porous structures in electrochemical energy storage technology. Progress towards all-optical integrated circuits may lie with the concepts of the photonic crystal, but the unique optical and structural properties of these materials and the convergence of PhC and energy storage disciplines may facilitate further developments and non-destructive optical analysis capabilities for (electro)chemical processes that occur within a wide variety of materials in energy storage research.

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Section: B 2d Opals and Ordered Structures -Planar Dielectric Gratinmentioning

confidence: 99%

Section: Colloidal Self-assemblymentioning

confidence: 99%

Artificial opal photonic crystals and inverse opal structures – fundamentals and applications from optics to energy storage

2015

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“…The natural defects that form upon drying after many forms of opal deposition are greater and more numerous than perturbations caused by roughness that are 4-5 orders of magnitude smaller in size (between 0.5-3 nm rms) for our substrates. We have previously investigated the effect of repulsive assembly of the opal template on surfaces with nominal roughness that is similar and as a function of the hydrophobicity and hydrophilicity 52 and it was found that the surface roughness of this magnitude is not a dominant factor for assembly. Effect of sphere size and binary opal templates on inverse opal electrodeposition.-The effect of sphere size in the colloidal opal template [53][54][55][56] on the electrodeposition was also investigated as part of this study.…”

Section: Resultsmentioning

confidence: 99%

The Influence of Colloidal Opal Template and Substrate Type on 3D Macroporous Single and Binary Vanadium Oxide Inverse Opal Electrodeposition

O’Hanlon

McNulty

O’Dwyer

2017

J. Electrochem. Soc.

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We report on the electrodeposition of 3D macroporous vanadium oxide inverse opals and binary inverse opals on transparent conducting oxide substrates and stainless steel and thermally oxidized stainless steel substrates. The electrodeposition follows a diffusion limited growth mode to form 3D porous crystalline V 2 O 5 after removal of a colloid photonic crystal template of selfassembled polystyrene spheres. Inverse opals were grown using spheres ranging in diameter from 0.5 μm to 6 μm, and binary inverse opals were also electrodeposited using binary mixtures of sphere sizes. We demonstrate that the ionic diffusion that leads to growth has charge-to-mass Coulombic efficiency ranging from 60-90%, depending on the voltage used. Additionally, the tortuosity in ionic diffusion through the opal to the substrate is significantly increased when large sphere diameter templates and binary opal templates are used. Analysis of the contribution of true substrate active area and the influence of template structure on ionic diffusivity confirms that inverse opal growth is dictated by the size of opal spheres, interstitial void clogging by smaller spheres in binary opals, and the conductivity of the substrate active area. which benefit from the large active surface-area to volume ratio and the ability of IOs to be fashioned with porosity that enhances the capture and waveguiding of light at certain energies at various angles of incidence, because IOs exhibit a pseudo photonic bandgap structure. 32Vanadium pentoxide (V 2 O 5 ) has been the subject of much research for over 40 years 33 and has been widely investigated as a cathode material for Li-ion batteries due to its high theoretical specific capacity, according to the following intercalation reaction: V 2 O 5 + xLi34,35 V 2 O 5 is useful for reversible Li-ion insertion and removal due to its mixed valance and layered structure. 25,31The mixed valence (V 4+ and V 5+ ) of V 2 O 5 allows for material expansion during intercalation with more electrolyte accessing the increased surface area, also helping decrease structural deformation of the material. 25,36 To date, a wide range of nanostructured V 2 O 5 mate- * Electrochemical Society Member. z E-mail: c.odwyer@ucc.ie rials (including nanowires, nanorods, etc. 34,37 ) have been examined as Li-ion cathode materials. In particular, 3D V 2 O 5 IO structures have shown extremely promising results in both and half-cell and full-cell configurations, prompting further research into mechanism of formation and control over their structure, geometry, crystallinity, size and composition/valence. 38 V 2 O 5 IOs have been formed using various routes including simple dropcast methods and more controlled electrodeposition (ED) approaches.7,25,32 ED of V 2 O 5 IOs has been achieved using a VOSO 4 aqueous solution (with subsequent heating allowing a transformation to crystalline V 2 O 5 ) producing dense material in the sphere template voids. Aside from the many alternative infiltration methods, creating binary inverse opals from binary opal t...

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“…Dip-coating [36][37][38] Can control thickness of layers by the speed of withdrawal. Gradient in layer thickness.…”

Section: Methods Remarksmentioning

confidence: 99%

“…Dip coating involves the controlled withdrawal of a substrate from a colloidal suspension [36][37][38]. The substrate is vertically held on one end and first submerged into a colloidal suspension.…”

Section: Methods Remarksmentioning

confidence: 99%

Bottom-Up Assembly and Applications of Photonic Materials

Zheng

Ravaine

2016

Crystals

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Abstract:The assembly of colloidal building-blocks is an efficient, inexpensive and flexible approach for the fabrication of a wide variety of photonic materials with designed shapes and large areas. In this review, the various assembly routes to the fabrication of colloidal crystals and their post-assembly modifications to the production of photonic materials are first described. Then, the emerging applications of the colloidal photonic structures in various fields such as biological and chemical sensing, anti-reflection, photovoltaics, and light extraction are summarized.

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Ordered 2D Colloidal Photonic Crystals on Gold Substrates by Surfactant‐Assisted Fast‐Rate Dip Coating

Cited by 59 publications

References 59 publications

Artificial opal photonic crystals and inverse opal structures – fundamentals and applications from optics to energy storage

Artificial opal photonic crystals and inverse opal structures – fundamentals and applications from optics to energy storage

The Influence of Colloidal Opal Template and Substrate Type on 3D Macroporous Single and Binary Vanadium Oxide Inverse Opal Electrodeposition

Bottom-Up Assembly and Applications of Photonic Materials

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