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

Science ◽  
2006 ◽  
Vol 313 (5789) ◽  
pp. 954-958 ◽  
Author(s):  
I. Musevic
Keyword(s):  
Colloidal Crystals ◽  
Topological Defects ◽  
Two Dimensional ◽  
Self Assembled

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

2015 ◽  
Vol 3 (24) ◽  
pp. 6185-6191 ◽  
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.

scholarly journals Defects and perturbation

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Enrico M. Brehm
Keyword(s):  
Entanglement Entropy ◽  
Topological Defects ◽  
Field Theories ◽  
Two Dimensional ◽  
Conformal Field Theories ◽  
Minimal Models ◽  
Conformal Field

Abstract We investigate perturbatively tractable deformations of topological defects in two-dimensional conformal field theories. We perturbatively compute the change in the g-factor, the reflectivity, and the entanglement entropy of the conformal defect at the end of these short RG flows. We also give instances of such flows in the diagonal Virasoro and Super-Virasoro Minimal Models.

scholarly journals Properties of twisted topological defects in 2D nematic liquid crystals

Soft Matter ◽  
2021 ◽  
Author(s):  
Daniel Pearce ◽  
Karsten Kruse
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Topological Defects ◽  
Two Dimensional

Topological defects are one of the most conspicuous features of liquid crystals. In two dimensional nematics, they have been shown to behave effectively as particles with both, charge and orientation,...

scholarly journals Template-Free Self-Assembly of Two-Dimensional Polymers into Nano/Microstructured Materials

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3310
Author(s):  
Shengda Liu ◽  
Jiayun Xu ◽  
Xiumei Li ◽  
Tengfei Yan ◽  
Shuangjiang Yu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Recent Progress ◽  
Two Dimensional ◽  
Subsequent Removal ◽  
The Past ◽  
2D Polymers ◽  
Template Free ◽  
Self Assembled ◽  
The Relationship ◽  
Polymer Tubes

In the past few decades, enormous efforts have been made to synthesize covalent polymer nano/microstructured materials with specific morphologies, due to the relationship between their structures and functions. Up to now, the formation of most of these structures often requires either templates or preorganization in order to construct a specific structure before, and then the subsequent removal of previous templates to form a desired structure, on account of the lack of “self-error-correcting” properties of reversible interactions in polymers. The above processes are time-consuming and tedious. A template-free, self-assembled strategy as a “bottom-up” route to fabricate well-defined nano/microstructures remains a challenge. Herein, we introduce the recent progress in template-free, self-assembled nano/microstructures formed by covalent two-dimensional (2D) polymers, such as polymer capsules, polymer films, polymer tubes and polymer rings.

scholarly journals Shear modulus of two-dimensional colloidal crystals

2002 ◽  
Vol 57 (2) ◽  
pp. 219-225 ◽  
Author(s):  
A Wille ◽  
F Valmont ◽  
K Zahn ◽  
G Maret
Keyword(s):  
Shear Modulus ◽  
Colloidal Crystals ◽  
Two Dimensional

scholarly journals Two-Dimensional Layered Oxide Structures Tailored by Self-Assembled Layer Stacking via Interfacial Strain

2016 ◽  
Vol 8 (26) ◽  
pp. 16845-16851 ◽  
Author(s):  
Wenrui Zhang ◽  
Mingtao Li ◽  
Aiping Chen ◽  
Leigang Li ◽  
Yuanyuan Zhu ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Layered Oxide ◽  
Layer Stacking ◽  
Interfacial Strain ◽  
Self Assembled ◽  
Self Assembled Layer

Self-assembled two-dimensional nanoporous molecular arrays and photoinduced polymerization of 4-bromo-4′-hydroxybiphenyl on Ag(111)

2015 ◽  
Vol 142 (10) ◽  
pp. 101902 ◽  
Author(s):  
Qian Shen ◽  
Jing Hui He ◽  
Jia Lin Zhang ◽  
Kai Wu ◽  
Guo Qin Xu ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Photoinduced Polymerization ◽  
Self Assembled

Topological liquid crystal superstructures as structured light lasers

2021 ◽  
Vol 118 (49) ◽  
pp. e2110839118
Author(s):  
Miha Papič ◽  
Urban Mur ◽  
Kottoli Poyil Zuhail ◽  
Miha Ravnik ◽  
Igor Muševič ◽  
...  
Keyword(s):  
Self Assembly ◽  
Soft Matter ◽  
Structured Light ◽  
Topological Defects ◽  
Photonic Devices ◽  
Light Polarization ◽  
Self Healing ◽  
Fabry Perot ◽  
Self Assembled ◽  
External Stimuli

Liquid crystals (LCs) form an extremely rich range of self-assembled topological structures with artificially or naturally created topological defects. Some of the main applications of LCs are various optical and photonic devices, where compared to their solid-state counterparts, soft photonic systems are fundamentally different in terms of unique properties such as self-assembly, self-healing, large tunability, sensitivity to external stimuli, and biocompatibility. Here we show that complex tunable microlasers emitting structured light can be generated from self-assembled topological LC superstructures containing topological defects inserted into a thin Fabry–Pérot microcavity. The topology and geometry of the LC superstructure determine the structuring of the emitted light by providing complex three-dimensionally varying optical axis and order parameter singularities, also affecting the topology of the light polarization. The microlaser can be switched between modes by an electric field, and its wavelength can be tuned with temperature. The proposed soft matter microlaser approach opens directions in soft matter photonics research, where structured light with specifically tailored intensity and polarization fields could be designed and implemented.

Effect of Particles of Irregular Size on the Microstructure and Structural Color of Self-Assembled Colloidal Crystals

Langmuir ◽  
2021 ◽  
Author(s):  
Tianyu Liu ◽  
Bryan VanSaders ◽  
Jacob T. Keating ◽  
Sharon C. Glotzer ◽  
Michael J. Solomon
Keyword(s):  
Colloidal Crystals ◽  
Structural Color ◽  
Self Assembled
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