Photonic bandgap engineering for spectral narrowing of emission in self-assembled colloidal photonic crystals

2006 ◽  
Author(s):  
Koen Clays ◽  
Renaud A. L. Vallée ◽  
Kasper Baert
Keyword(s):  
Photonic Crystals ◽  
Photonic Bandgap ◽  
Bandgap Engineering ◽  
Colloidal Photonic Crystals ◽  
Spectral Narrowing ◽  
Self Assembled

Photonic Bandgap Engineering in Mixed Colloidal Photonic Crystals

2005 ◽  
Vol 44 (No. 40) ◽  
pp. L1259-L1262 ◽  
Author(s):  
Hee Jin Kim ◽  
Young-Geun Roh ◽  
Heonsu Jeon
Keyword(s):  
Photonic Crystals ◽  
Photonic Bandgap ◽  
Bandgap Engineering ◽  
Colloidal Photonic Crystals

Self-assembled colloidal photonic crystals: light channels in cracks

2003 ◽  
Vol 139 (3) ◽  
pp. 643-647 ◽  
Author(s):  
O. Popov ◽  
V. Lirtsman ◽  
F. Kopnov ◽  
D. Davidov ◽  
T. Saraidarov ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Colloidal Photonic Crystals ◽  
Self Assembled

Self-Assembled Colloidal Photonic Crystals

2003 ◽  
Vol 137 (1-3) ◽  
pp. 993-995 ◽  
Author(s):  
Freida Kopnov ◽  
Vlad Lirtsman ◽  
Dan Davidov
Keyword(s):  
Photonic Crystals ◽  
Colloidal Photonic Crystals ◽  
Self Assembled

From Opals to Optics: Colloidal Photonic Crystals

MRS Bulletin ◽  
2001 ◽  
Vol 26 (8) ◽  
pp. 637-641 ◽  
Author(s):  
Vicki L. Colvin
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Near Infrared ◽  
Photonic Bandgap ◽  
Length Scale ◽  
Ordered Arrays ◽  
Colloidal Photonic Crystals ◽  
Infrared Wavelengths

Over a decade ago, theorists predicted that photonic crystals active at visible and near-infrared wavelengths would possess a variety of exciting optical properties. Only in the last several years, however, have experimentalists begun to build materials that realize this potential in the laboratory. This lag between experiment and theory is primarily due to the to the challenges associated with fabricating these unique materials. As the term “crystal” suggests, these samples must consist of highly perfect ordered arrays of solids. However, unlike conventional crystals, which exhibit order on the angstrom length scale, photonic crystals must have order on the submicrometer length scale. In addition, many of the most valuable properties of photonic crystals are only realized when samples possess a “full” photonic bandgap. For such systems, large dielectric contrasts and particular crystal symmetries create a range of frequencies over which light cannot propagate. Realizing the nanoscopic architectures required to form such systems is a challenge for experimentalists. As a result, fabrication schemes that rely on lithographic techniques or spontaneous assembly have been a focus in the development of the field.

Modifying the symmetry of colloidal photonic crystals: a way towards complete photonic bandgap

2014 ◽  
Vol 2 (21) ◽  
pp. 4100 ◽  
Author(s):  
Tao Ding ◽  
Yue Long ◽  
Kuo Zhong ◽  
Kai Song ◽  
Guoqiang Yang ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Photonic Bandgap ◽  
Colloidal Photonic Crystals

Self-Assembly of Block Copolymers for Photonic-Bandgap Materials

MRS Bulletin ◽  
2005 ◽  
Vol 30 (10) ◽  
pp. 721-726 ◽  
Author(s):  
Jongseung Yoon ◽  
Wonmok Lee ◽  
Edwin L. Thomas
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Photonic Crystals ◽  
Liquid Crystalline ◽  
Photonic Bandgap ◽  
Photonic Bandgap Materials ◽  
Periodic Microstructures ◽  
Self Assembled ◽  
Bandgap Materials

AbstractSelf-assembled block copolymer systems with an appropriate molecular weight to produce a length scale that will interact with visible light are an alternative platform material for the fabrication of large-area, well-ordered photonic-bandgap structures at visible and near-IR frequencies.Over the past years, one-, two-, and three-dimensional photonic crystals have been demonstrated with various microdomain structures created through microphase separation of block copolymers. The size and shape of periodic microstructures of block copolymers can be readily tuned by molecular weight, relative composition of the copolymer, and blending with homopolymers or plasticizers.The versatility of photonic crystals based on block copolymers is further increased by incorporating inorganic nanoparticles or liquid-crystalline guest molecules (or using a liquid-crystalline block), or by selective etching of one of the microdomains and backfilling with high-refractive-index materials. This article presents an overview of photonic-bandgap materials enabled by self-assembled block copolymers and discusses the morphology and photonic properties of block-copolymer-based photonic crystals containing nanocomposite additives.We also provide a view of the direction of future research, especially toward novel photonic devices.

Controlled photonic bandgap tuning in mixed colloidal photonic crystals

2004 ◽  
Author(s):  
Hee J. Kim ◽  
Young-Geun Roh ◽  
Yeonsang Park ◽  
Chi-O Cho ◽  
Heonsu Jeon
Keyword(s):  
Photonic Crystals ◽  
Photonic Bandgap ◽  
Colloidal Photonic Crystals ◽  
Bandgap Tuning
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