Exploring for 3D photonic bandgap structures in the 11 f.c.c. space groups

Maldovan, Martin; Ullal, Chaitanya K.; Carter, W. Craig; Thomas, Edwin L.

doi:10.1038/nmat979

Cited by 88 publications

(77 citation statements)

References 17 publications

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“…[17] Moreover, controlling their architecture and interaction has led to open, simple cubic, and diamond networks, [71] which are known to be useful candidates for photonic applications. [72][73][74][75] As the spacing and characteristics of individual domains can be tuned in a reliable manner, it is possible to propose new and previously inaccessible structures, as well as create complex and hierarchical morphologies. [76][77][78][79][80][81][82][83] Finally, the solvent selectivity is important to the kinds of morphologies that will assemble, and has been found to dramatically affect the nature of self-assembled structures allowing for a wide variety of tunable micellar structures.…”

Section: Computational Design Of Functional Nanostructuresmentioning

confidence: 99%

Rational design of nanomaterials from assembly and reconfigurability of polymer-tethered nanoparticles

2015

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Polymer-based nanomaterials have captured increasing interest over the past decades for their promising use in a wide variety of applications including photovoltaics, catalysis, optics, and energy storage. Bottom-up assembly engineering based on the self-and directed-assembly of polymer-based building blocks has been considered a powerful means to robustly fabricate and efficiently manipulate target nanostructures. Here, we give a brief review of the recent advances in assembly and reconfigurability of polymer-based nanostructures. We also highlight the role of computer simulation in discovering the fundamental principles of assembly science and providing critical design tools for assembly engineering of complex nanostructured materials.

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Section: Computational Design Of Functional Nanostructuresmentioning

confidence: 99%

Rational design of nanomaterials from assembly and reconfigurability of polymer-tethered nanoparticles

2015

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“…Unfortunately, calculations and band structure modelling have revealed a complete photonic band gap that forms only under very strict structural and dielectric conditions. [18][19][20] Regardless of the type of lattice structure, the high-dielectric component of the photonic crystal needs to have a refractive index exceeding 2 (assuming that air is the low-dielectric component), while being optically transparent in and around the band gap wavelength region; for example, for an optimized diamond lattice the minimum refractive index is 2.0 in order to open a complete band gap, whereas for a close-packed face-centred cubic lattice of air spheres (inverse opal) the surrounding high-dielectric needs to have a refractive index of at least 2.8. 19,20 Interestingly, complete band gaps are absent in biological photonic crystals, despite millions of years of optimization.…”

Section: Photonic Structures In Biology and Technologymentioning

confidence: 99%

Photonic Structures in Biology: A Possible Blueprint for Nanotechnology

Barrows

Bartl

2014

Nanomaterials and Nanotechnology

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Nature has had millions of years to optimize photonic crystals -an endeavour mankind only really began in the 1980s. Often, we attempt to mimic and expand upon nature's designs in creating photonic structures that meet our technology-driven needs. While this strategy can be fruitful in fabricating novel architectures, one has to keep in mind that nature designed and optimized these structures for specific applications (e.g., colouration, camouflaging, signalling), but certainly not for use in photonic chips and optical circuits. To take full advantage of biological structures as blueprints for nanotechnology, it is important to understand the purpose and development of natural structural colours. In this review, we will discuss important aspects of the design, formation and evolution of the structures embedded in beetle exoskeletons that are responsible for their striking colouration. In particular, we will focus on the purpose of structural colours for camouflaging, mimicry and signalling. We will discuss their evolutionary and ecological development and compare the development of beetles with and without structural colours. Examples of non-colour-related structural functionalities will also be introduced and briefly discussed. Finally, a brief overview of nature's synthesis strategies for these highly evolved structures will be given, with particular focus on membrane assembly.

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“…For certain large area applications, simpler techniques could be more suitable. Spontaneous self-assembly of colloids [375], synthetic opals [379][380][381][382][383][384], inverted opals [379,[385][386][387] and block copolymers [218,219,221,378,[388][389][390][391][392][393][394][395][396][397][398][399][400][401][402], on the other hand, allows the preparation of small enough structures. Although self-assembly leads to a well-defined local order and offers a potentially low-cost method for the production of photonic crystals, it is nontrivial to achieve perfectly ordered structures over the macroscopic length scale combining carefully engineered defects.…”

Section: Optical Properties Of Self-assembled Polymer Systemsmentioning

confidence: 99%

“…In the purely layered geometry, it is not possible to achieve a complete photonic bandgap, which would stop the light propagation in all directions. Therefore, higher dimensional block copolymer structures have been pursued [374,377,393,398,400,402]. Even 2D materials consisting of self-assembled cylinders do not allow a complete bandgap [399] and in this respect 3D network-like structures are currently being studied in detail [402].…”

Section: Optical Properties Of Self-assembled Polymer Systemsmentioning

confidence: 99%