Tetrastack: Colloidal diamond-inspired structure with omnidirectional photonic band gap for low refractive index contrast

Ngo, Thanh-Tuan; Liddell, Chekesha M.; Ghebrebrhan, Michael; Joannopoulos, John D.

doi:10.1063/1.2206111

Cited by 75 publications

(64 citation statements)

References 25 publications

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“…Lifetime and relative contribution from slow and fast fl uorescence decay components calculated from a bi-exponential model. [ 53,54 ] The inherent photoluminescence of fullerene solvates also aligns with the desire for complex function from simple building blocks that has ignited experimental efforts in thin fi lm materials organized at the mesoscale. Notably, polarization independent pure 2D photonic band gaps (i.e., up to 10.6% gap-to-midgap ratio) have already been predicted for honeycomb lattices of hexagonal cross-section dielectric rods in air.…”

Section: Communicationmentioning

confidence: 88%

Anisometric Colloidal Fullerene Rod and Platelet Solvates with Enhanced Photoluminescence

Penterman

Singh

Zipfel

et al. 2014

Advanced Optical Materials

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wileyonlinelibrary.com COMMUNICATIONsubwavelength imaging (superlens). [ 12,13 ] In addition, doping sphere-based photonic crystals with rare earths, lanthanides, organic dyes and quantum dots has established properties such as suppression or enhancement of spontaneous emission and photonic crystal lasing due to multiple refl ections and high density of states at the photonic band gap edges. [14][15][16] Only a handful of experimental reports address uniform nonspherical colloidal building blocks (i.e., size range between 400 nm and 1.5 micrometers for photonic crystals in the visible and nearinfrared regimes) with an active optical functionality (i.e., luminescence) at the single particle level.The present work develops fullerene microcrystals as a new materials platform, suitable for 'active' light emitting elements in colloid-based photonic crystals. The materials support singlet excited states that tend to be self-trapped by localized lattice deformation (i.e., Jahn-Teller distortion) and recombine to produce a characteristic red photoluminescence (PL). [17][18][19][20] These high refractive index and transparent building blocks (λ > 560 nm) may also support photonic band gaps in direct structures as compared to the common silica and polymer sphere-based structures which must be backfi lled with semiconductors such as Si and GaAs. [ 11 ] Fullerene molecular crystals have previously been synthesized in a variety of bulk to mesoscale forms including thick and thin fi lms, [ 21 ] wire arrays, [ 22 ] whiskers [ 23 ] and platelets. [ 24 ] Micrometer and sub-micrometer crystals have also been prepared with anisotropic morphology using solution-based techniques such as precipitation at the interface between immiscible liquids (LLIP, liquid-liquid interfacial precipitation), [24][25][26] and evaporation-assisted growth from drops on a substrate. [27][28][29][30] Control of size and shape dispersity with these methods is still lacking. In contrast, microcrystal growth in emulsifi ed solvent-nonsolvent mixtures (co-solvent precipitation) has yielded colloidal particles with tunable shapes, crystal structure and monodispersity. [31][32][33][34] Droplet shrinkage over time in miscible liquids causes local supersaturation of the fullerenes and leads to particle nucleation. The solvent properties (i.e., molecular shape, fullerene solubility, dipole moment, miscibility, interdiffusion rate, etc.), solvent-antisolvent ratio, concentration, temperature and mixing conditions determine the colloidal chemistry and morphology. [31][32][33][34][35] For example, crystallization of C 60 with CS 2 in 2-propanol resulted in bipyramidal-shaped particles, C 70 crystallized with CS 2 in 1-propanol produced rugby ball shapes as well as rhombic dodecahedra, and C 70 with mesitylene in 2-propanol solution produced cubes. [ 31,32 ] Here, we report the synthesis of shape diverse and monodisperse microcrystal solvates using co-solvent precipitation with C 60 and C 70 fullerene-methylbenzene solutions in 2-propanol as a poor solvent. The photol...

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Section: Communicationmentioning

confidence: 88%

Anisometric Colloidal Fullerene Rod and Platelet Solvates with Enhanced Photoluminescence

Penterman

Singh

Zipfel

et al. 2014

Advanced Optical Materials

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“…This work on model anisotropic particles is particularly timely given the rapid recent advances in synthe- sizing anisotropic colloids, 14,15,16 and because one target for research in this field is to get particles with tetrahedral symmetry to assemble into a diamond-like crystal. 78 Our results indicate that the crystallization of such tetrahedral colloids might not be so straightforward, because of the potentially frustrating effects of the variety of local structures possible in the liquid phase. However, it is not clear how an additional potential term similar to that used by Zhang et al could be introduced into the intercolloidal potential to alleviate this.…”

Section: Three-dimensional Crystallizationmentioning

confidence: 91%

Controlling crystallization and its absence: proteins, colloids and patchy models

Doye

Louis²,

Lin

et al. 2007

Phys. Chem. Chem. Phys.

188

216

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The ability to control the crystallization behaviour (including its absence) of particles, be they biomolecules such as globular proteins, inorganic colloids, nanoparticles, or metal atoms in an alloy, is of both fundamental and technological importance. Much can be learnt from the exquisite control that biological systems exert over the behaviour of proteins, where protein crystallization and aggregation are generally suppressed, but where in particular instances complex crystalline assemblies can be formed that have a functional purpose. We also explore the insights that can be obtained from computational modelling, focussing on the subtle interplay between the interparticle interactions, the preferred local order and the resulting crystallization kinetics. In particular, we highlight the role played by "frustration", where there is an incompatibility between the preferred local order and the global crystalline order, using examples from atomic glass formers and model anisotropic particles.

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“…Moreover, it was demonstrated that two different structures can be self-assembled in one crystal structure from a binary colloidal dispersion [106,107]. These BCCs offer higher flexibility in engineering the photonic bandgap structures compared with one-size colloidal PCs, and these materials have found wide applications in sensing, protein patterning, and bioseparation [108,109].…”

Section: Aunps With Opalsmentioning

confidence: 99%

Gold Nanoparticles in Photonic Crystals Applications: A Review

Venditti

2017

Materials

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This review concerns the recently emerged class of composite colloidal photonic crystals (PCs), in which gold nanoparticles (AuNPs) are included in the photonic structure. The use of composites allows achieving a strong modification of the optical properties of photonic crystals by involving the light scattering with electronic excitations of the gold component (surface plasmon resonance, SPR) realizing a combination of absorption bands with the diffraction resonances occurring in the body of the photonic crystals. Considering different preparations of composite plasmonic-photonic crystals, based on 3D-PCs in presence of AuNPs, different resonance phenomena determine the optical response of hybrid crystals leading to a broadly tunable functionality of these crystals. Several chemical methods for fabrication of opals and inverse opals are presented together with preparations of composites plasmonic-photonic crystals: the influence of SPR on the optical properties of PCs is also discussed. Main applications of this new class of composite materials are illustrated with the aim to offer the reader an overview of the recent advances in this field.

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Tetrastack: Colloidal diamond-inspired structure with omnidirectional photonic band gap for low refractive index contrast

Abstract: vectors R 1 = a͑0,1/ ͱ 2,1/ ͱ 2͒, R 2 = a͑1/ ͱ 2,0,1/ ͱ 2͒ , R 3 = a͑1/ ͱ 2,1/ ͱ 2,0͒, and basis sphere positions, 0, 0.5R 1 , APPLIED PHYSICS LETTERS 88, 241920 ͑2006͒

Cited by 75 publications

References 25 publications

Anisometric Colloidal Fullerene Rod and Platelet Solvates with Enhanced Photoluminescence

Anisometric Colloidal Fullerene Rod and Platelet Solvates with Enhanced Photoluminescence

Controlling crystallization and its absence: proteins, colloids and patchy models

Gold Nanoparticles in Photonic Crystals Applications: A Review

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