Colloidal crystals self-assembled on the end face of fiber: Fabrication and characterizations

Since the 1920s, packing arguments have been used to rationalize crystal structures in systems ranging from atomic mixtures to colloidal crystals. Packing arguments have recently been applied to complex nanoparticle structures, where they often, but not always, work. We examine when, if ever, packing is a causal mechanism in hard particle approximations of colloidal crystals. We investigate three crystal structures composed of their ideal packing shapes. We show that, contrary to expectations, the ordering mechanism cannot be packing, even when the thermodynamically self-assembled structure is the same as that of the densest packing. We also show that the best particle shapes for hard particle colloidal crystals at any finite pressure are imperfect versions of the ideal packing shape.

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Two-Dimensional Nematic Colloidal Crystals Self-Assembled by Topological Defects

Science ◽

10.1126/science.1129660 ◽

2006 ◽

Vol 313 (5789) ◽

pp. 954-958 ◽

Cited By ~ 561

Author(s):

I. Musevic

Keyword(s):

Colloidal Crystals ◽

Topological Defects ◽

Two Dimensional ◽

Self Assembled

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In-situ self-assembled colloidal crystals within microchannels using one step stamping for direct seawater desalination by ion concentration polarization

2012 IEEE 25th International Conference on Micro Electro Mechanical Systems (MEMS) ◽

10.1109/memsys.2012.6170399 ◽

2012 ◽

Author(s):

Eunpyo Choi ◽

Kilsung Kwon ◽

Seung Jun Lee ◽

Daejoong Kim ◽

Jungyul Park

Keyword(s):

Concentration Polarization ◽

Colloidal Crystals ◽

Ion Concentration ◽

Seawater Desalination ◽

Ion Concentration Polarization ◽

One Step ◽

Self Assembled

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Control of plasmonic fluorescence enhancement on self-assembled 2-D colloidal crystals

Journal of Materials Chemistry C ◽

10.1039/c5tc00464k ◽

2015 ◽

Vol 3 (24) ◽

pp. 6185-6191 ◽

Cited By ~ 17

Author(s):

Wei Hong ◽

Yu Zhang ◽

Lin Gan ◽

Xudong Chen ◽

Mingqiu Zhang

Keyword(s):

Conjugated Polymers ◽

Systematic Study ◽

Fluorescence Enhancement ◽

Colloidal Crystals ◽

Excitation Wavelength ◽

Two Dimensional ◽

Self Assembled

A systematic study of the excitation wavelength–LSPR-based fluorescence enhancement of conjugated polymers on Ag-capped two-dimensional colloidal crystals.

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Novel Approach for Fabricating Highly Ordered Colloidal Crystals using Fluorinated Solvent

MRS Proceedings ◽

10.1557/proc-1014-aa07-10 ◽

2007 ◽

Vol 1014 ◽

Author(s):

Satoshi Takeda ◽

Pierre Wiltzius

Keyword(s):

Photonic Crystals ◽

Colloidal Particles ◽

Colloidal Crystals ◽

Optical Devices ◽

Glass Slide ◽

Polystyrene Microspheres ◽

Novel Technique ◽

Colloidal Photonic Crystals ◽

Novel Approach ◽

Self Assembled

AbstractA novel technique for fabricating highly ordered colloidal photonic crystals has been developed. In this method, a droplet of water containing polystyrene microspheres was added to the surface of a fluorinated solvent bath. Consequently, the two liquids remained separated and the colloidal particles self-assembled into close-packed structures at the interface between them. By transferring the droplet onto a glass slide, a highly ordered crystal was obtained. This technique offers a new, potentially easier, and more effective approach than currently used. We believe that it will open new ways for fabricating materials based on colloidal crystals as well as applying the colloidal photonic crystals to optical devices.

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