Towards a full understanding of the growth dynamics and optical response of self-assembled photonic colloidal crystal films

Lozano, Gabriel; Dorado, Luís A.; Depine, Ricardo A.; Míguez, Hernán

doi:10.1039/b811955d

Cited by 26 publications

(19 citation statements)

References 34 publications

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“…[21][22][23][24][25][26][27][28][29][30] These valuable results are also promising to produce high quality crystals inside capillaries. Among these parameters, evaporation temperature is most important due to its decision of evaporation rate of solvent and film growth rate, which can keep the balance of the rate of nucleus formation, particle transport, and crystallization.…”

Section: Resultsmentioning

confidence: 91%

“…This is an important issue for potential applications such as column chromatography and photonic band gap materials. [26][27][28][29][30] V. CONCLUSIONS Using a general EISA technique, it is possible to fabricate cylindrical colloidal crystals in capillaries with various inner diameters. SEM of the samples shows that particles arrange in a crystalline FCC structure inside the capillary.…”

Section: Discussionmentioning

confidence: 99%

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Evaporation-induced self-assembly of capillary cylindrical colloidal crystal in a face-centered cubic structure with controllable thickness

et al. 2012

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The fabrication of capillary cylindrical crystals from colloidal suspension with controllable thickness by evaporation-induced self-assembly method has been investigated. The thickness of the hollow cylinders can be precisely controlled ranging from monolayer to tens of layers by varying the suspension concentration. With the increase of suspension concentration, the particles fill completely inside capillaries to form solid bulk crystals and the critical values are found in capillaries with various diameters. Scanning electron microscope images confirm the facecentered-cubic structure in both crystals, but with two different [111] crystalline directions. The experiment parameters, such as the solvent, concentration of the suspension and inner diameter of capillary are studied for the quality and the number of film layers control. Qualitative analysis has been performed to probe into the solvent evaporation modes and the mechanism of particle arrangement inside the capillary.

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Section: Resultsmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Evaporation-induced self-assembly of capillary cylindrical colloidal crystal in a face-centered cubic structure with controllable thickness

et al. 2012

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“…This approach is adequate to treat ordered assembles of spherical scatters and requires reduced computational effort. Besides, this method has also allowed finding an explanation of the physical origin of the optical response in terms of the electromagnetic resonances occurring in the finite sphere ensemble and even reproduces fine details such as the spectral and angular dependence of the intensity of the diffracted modes [16][17][18][19]8]. Furthermore, this same approach has already accounted for the experimental observation of a nonlinear light-matter interaction enhancement by slowing light at a particular high energy frequency range [5].…”

Section: Introductionmentioning

confidence: 94%

Anomalous group velocity at the high energy range of a 3D photonic nanostructure

Botey¹,

Martorell²,

Dorado³

et al. 2010

Opt. Express

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Abstract:We report on a study of electromagnetic waves propagation in thin periodically ordered photonic nanostructures in the spectral range where the light wavelength is on the order of the lattice parameter. The vector KKR method we use allows us to determine the group index from finite photonic structures including extinction providing confirmation of recently emerged results. We show that for certain frequencies the group velocity of opal slabs can either be superluminal or approach zero depending on the crystal thickness and the unavoidable presence of losses. In some cases, group velocity can be negative. Such behavior can be clearly attributed to the finite character of the three-dimensional structure and reproduces previously reported experimental observations. Calculations show that contrary to the predictions of extraordinary group velocity reductions for infinite periodic structures, the group velocity of real opals may exhibit strong fluctuations at the high energy range. Hence, a direct identification between the calculated anomalous group velocities, for an actual opal film, and the predicted propagating low dispersion modes for an ideal infinite ordered structure seems difficult to establish. 49-77 (1998). 14. K. Ohtaka, "Scattering theory of low-energy photon diffraction," J. Phys. C: Solid State 13(4), 667-680 (1980). 15. A. Modinos, "Scattering of electromagnetic waves by a plane of spheres-formalism," Physica A 141(2-3), 575-588 (1987) ©2010 Optical Society of America

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“…The fundamental mechanism to assemble the CC films can be rationalized in terms of film thickness [41,42] and fluid flow [43]. Very recently, Míguez's group reported an excellent review on the understanding of growth dynamics of CC films by vertical deposition, and also guided the optical behavior in the short-wavelength range with respect to the PBG, thereby resulting in the evaluation of the perfection degree of CC films as PCs [44]. From a technological viewpoint, however, there still remain some serious disadvantages.…”

Section: Vertical Deposition and Lifting Of Substratementioning

confidence: 99%

Self‐organized colloidal crystals for photonics and laser applications

Furumi¹,

Fudouzi

Sawada

2010

Laser & Photonics Reviews

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We present an overview of recent developments in the fabrication and uses of colloidal crystals (CCs) for photonics and laser applications. Microparticles with a diameter in the range from 10 nm to 10 µm often have an intrinsic capability to spontaneously organize themselves from a colloidal suspension into 3D lattice structures. Such highly ordered 3D architectures of microparticles are called colloidal crystals (CCs). The CC structures have received tremendous attention as one of the facile and high-throughput fabrication techniques of photonic crystals (PCs). We introduce here interesting precedents not only of diverse techniques of high-quality CC structures, but also of their versatile applications in optical sensors responding to various external stimuli. This review also highlights a new potential use of the CCs as low-threshold laser devices. We believe that a wide variety of CC architectures will play leading roles in the next generation of optoelectronic devices.Photograph of the laser action of the flexible polymer CC laser device by optical excitation above the threshold pulse energy.The inset is a high-resolution laser emission spectrum of a CC laser device. Reproduced with permission from [158].

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Towards a full understanding of the growth dynamics and optical response of self-assembled photonic colloidal crystal films

Cited by 26 publications

References 34 publications

Evaporation-induced self-assembly of capillary cylindrical colloidal crystal in a face-centered cubic structure with controllable thickness

Evaporation-induced self-assembly of capillary cylindrical colloidal crystal in a face-centered cubic structure with controllable thickness

Anomalous group velocity at the high energy range of a 3D photonic nanostructure

Self‐organized colloidal crystals for photonics and laser applications

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