Self‐organized colloidal crystals for photonics and laser applications

Furumi, Seiichi; Fudouzi, Hiroshi; Sawada, Tsutomu

doi:10.1002/lpor.200910005

Cited by 96 publications

(62 citation statements)

References 164 publications

(186 reference statements)

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“…We show how the luminescent properties of the spheres can be further modified in these structures by means of Bragg diffraction. These results pave the way for future unconventional light sources such as lasers combining the cavity-less lasing mechanisms characteristic of 3D PhC [25] with the advantages of FRET-based lasers. [26] …”

Section: Introductionmentioning

confidence: 80%

3D photonic crystals from highly monodisperse FRET-based red luminescent PMMA spheres

et al. 2015

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Red-luminescent PMMA spheres containing a Förster resonance energy transfer (FRET) pair were synthesized via a two-step polymerization method. Two reaction parameters, time and monomer volume, are scanned in order to tune the sphere diameter in the 250-500 nm range. Further the polydispersity of the spheres is kept low, at ca. 3%, regardless of sphere diameter or dye concentration. A thorough optical characterization via spectroscopy and time resolved measurements shows a FRET efficiency of over 40% before concentration quenching effects take place, allowing for a precise tuning of their emission in the red region of the visible spectrum. The high quality of these spheres makes them suitable to fabricate selfassembled 3D photonic crystals which act as photonic environment to modify the spectral properties of the FRET pair via Bragg diffraction. † Present address:

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Section: Introductionmentioning

confidence: 80%

3D photonic crystals from highly monodisperse FRET-based red luminescent PMMA spheres

et al. 2015

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“…CCs (also referred to as artificial opals) are in their own right a relevant material class for numerous applications in photonics and energy [50,51], detection [52,53] or as atomic/molecular models [54]. For such uses it is important to know how the unavoidable presence of liquid (e.g.…”

Section: Water In Colloidal Crystalsmentioning

confidence: 99%

Colloidal crystals and water: Perspectives on liquid–solid nanoscale phenomena in wet particulate media

Gallego-Gómez

Morales‐Flórez

Morales

et al. 2016

Advances in Colloid and Interface Science

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Solid colloidal ensembles inherently contain water adsorbed from the ambient moisture. This water, confined in the porous network formed by the building submicron spheres, greatly affects the ensemble properties. Inversely, one can benefit from such influence on collective features to explore the water behavior in such nanoconfinements. Recently, novel approaches have been developed to investigate in-depth where and how water is placed in the nanometric pores of self-assembled colloidal crystals. Here we summarize these advances, along with new ones, that are linked to general interfacial water phenomena like adsorption, capillary forces and flow. Waterdependent structural properties of the colloidal crystal give clues to the interplay between nanoconfined water and solid fine particles that determines the behavior of ensembles. We elaborate on how the knowledge gained on water in colloidal crystals provides new opportunities for multidisciplinary study of interfacial and nanoconfined liquids and their essential role in the physics of utmost important systems such as particulate media.

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“…Monodispersed colloidal microparticles with a diameter of several hundred nanometers are known to show the self-assembly from a colloidal suspension into 3D ordered lattice structures (Figure 2b). [81][82][83][84][85][86][87][88][89][90][91] Such 3D ordered structures of microparticles are called 'CCs' . Notably, no special facilities are required for the fabrication of CC structures due to bottom-up process of microparticle assembly.…”

Section: Ccs As Pcsmentioning

confidence: 99%

Self-assembled organic and polymer photonic crystals for laser applications

Furumi

2012

Polym J

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This article describes an overview of recent developments in fabrication and uses of self-assembled photonic crystals (PCs) of organic and polymer materials, such as chiral liquid crystals (CLCs) and colloidal crystals (CCs), for laser applications. Both CLCs and CCs have intrinsic capabilities to spontaneously assemble 1D-PC and 3D-PC structures, respectively. When a periodic length in the PC structures of CLCs and CCs corresponds to several hundred nanometers of the light wavelength, the photonic band-gaps (PBGs) can be visualized as Bragg reflection colors. When combining fluorescence dyes in the CLCs and CCs, the stimulated laser action at PBG band edge(s) or within the PBG wavelength can be generated by optical excitation. Moreover, the optically excited laser action is controllable by external stimuli due to the self-organization of CLCs and CCs. This review highlights not only the research backgrounds of CLC and CC structures as PCs, but also the experimental results of their versatile soft and tunable laser applications. We believe that a wide variety of CLC and CC structures will have leading roles in the next generation of optoelectronic devices of organic and polymer materials.

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Self‐organized colloidal crystals for photonics and laser applications

Cited by 96 publications

References 164 publications

3D photonic crystals from highly monodisperse FRET-based red luminescent PMMA spheres

3D photonic crystals from highly monodisperse FRET-based red luminescent PMMA spheres

Colloidal crystals and water: Perspectives on liquid–solid nanoscale phenomena in wet particulate media

Self-assembled organic and polymer photonic crystals for laser applications

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