scholarly journals Spontaneous macroscopic carbon nanotube alignment via colloidal suspension in hexagonal columnar lyotropic liquid crystals

Soft Matter ◽  
2008 ◽  
Vol 4 (3) ◽  
pp. 570 ◽  
Author(s):  
Giusy Scalia ◽  
Clemens von Bühler ◽  
Constanze Hägele ◽  
Siegmar Roth ◽  
Frank Giesselmann ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Liquid Crystals ◽  
Colloidal Suspension ◽  
Lyotropic Liquid Crystals ◽  
Hexagonal Columnar

Direct Filament Formation of Biological Carbon Nanotube Suspensions

2012 ◽  
Vol 2012 (CICMT) ◽  
pp. 000132-000135
Author(s):  
Hiroya Abe ◽  
Zhenquan Tan ◽  
Akira Kondo ◽  
Makio Naito
Keyword(s):  
Carbon Nanotube ◽  
Liquid Crystals ◽  
Rheological Properties ◽  
Water System ◽  
Sodium Deoxycholate ◽  
Lyotropic Liquid Crystals ◽  
Shear Direction ◽  
Filament Formation ◽  
Self Association ◽  
Cnt Suspensions

In this study, aqueous carbon nanotube (CNT) suspensions were prepared using biological surfactant of sodium deoxycholate (NaDC). The influence of NaDC concentration on the NaDC self-association in water and the rheological responses of the NaDC-CNT-water system were investigated. It has been found that the yield stress of the suspension increased with NaDC concentration, which was strongly related to the NaDC self-association of lyotropic liquid crystals. Due to the enhanced rheological properties at high NaDC concentration (30%), it allowed the shear-induced filament formation in which the CNTs were aligned along to the shear direction. This filament formation may be attractive for transferring aligned CNTs on substrates in a controlled manner.

25.4: Micro-Patterned Carbon Nanotube Arrays Using Pen-Writable Lyotropic Liquid Crystals

2004 ◽  
Vol 35 (1) ◽  
pp. 936 ◽  
Author(s):  
Matthew E. Sousa ◽  
Christopher Chan ◽  
Yuming Gao ◽  
Kengqing Jian ◽  
Robert Hurt ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Liquid Crystals ◽  
Lyotropic Liquid Crystals ◽  
Nanotube Arrays ◽  
Carbon Nanotube Arrays

Patterning lyotropic liquid crystals as precursors for carbon nanotube arrays

2005 ◽  
Vol 87 (17) ◽  
pp. 173115 ◽  
Author(s):  
M. E. Sousa ◽  
S. G. Cloutier ◽  
K. Q. Jian ◽  
B. S. Weissman ◽  
R. H. Hurt ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Liquid Crystals ◽  
Lyotropic Liquid Crystals ◽  
Nanotube Arrays ◽  
Carbon Nanotube Arrays

scholarly journals Chromonic liquid crystals and packing configurations of bacteriophage viruses

2021 ◽  
Vol 379 (2201) ◽  
pp. 20200111
Author(s):  
Lindsey Hiltner ◽  
M. Carme Calderer ◽  
Javier Arsuaga ◽  
Mariel Vázquez
Keyword(s):  
Liquid Crystals ◽  
Hexagonal Structure ◽  
Lyotropic Liquid Crystals ◽  
Complex Materials ◽  
Cross Sectional ◽  
Equilibrium Configurations ◽  
Food Dyes ◽  
Energy Accounting ◽  
Hexagonal Columnar ◽  
Mathematical Design

We study equilibrium configurations of hexagonal columnar liquid crystals in the context of characterizing packing structures of bacteriophage viruses in a protein capsid. These are viruses that infect bacteria and are currently the focus of intense research efforts, with the goal of finding new therapies for bacteria-resistant antibiotics. The energy that we propose consists of the Oseen–Frank free energy of nematic liquid crystals that penalizes bending of the columnar directions, in addition to the cross-sectional elastic energy accounting for distortions of the transverse hexagonal structure; we also consider the isotropic contribution of the core and the energy of the unknown interface between the outer ordered region of the capsid and the inner disordered core. The problem becomes of free boundary type, with constraints. We show that the concentric, azimuthal, spool-like configuration is the absolute minimizer. Moreover, we present examples of toroidal structures formed by DNA in free solution and compare them with the analogous ones occurring in experiments with other types of lyotropic liquid crystals, such as food dyes and additives. This article is part of the theme issue ‘Topics in mathematical design of complex materials’.

scholarly journals Macroscopic-scale carbon nanotube alignment via self-assembly in lyotropic liquid crystals

2009 ◽  
Vol 159 (21-22) ◽  
pp. 2177-2179 ◽  
Author(s):  
Stefan Schymura ◽  
Eva Enz ◽  
Siegmar Roth ◽  
Giusy Scalia ◽  
Jan P.F. Lagerwall
Keyword(s):  
Carbon Nanotube ◽  
Liquid Crystals ◽  
Self Assembly ◽  
Lyotropic Liquid Crystals ◽  
Macroscopic Scale

scholarly journals Filament formation in carbon nanotube-doped lyotropic liquid crystals

Soft Matter ◽  
2011 ◽  
Vol 7 (6) ◽  
pp. 2663 ◽  
Author(s):  
Stefan Schymura ◽  
Sarah Dölle ◽  
Jun Yamamoto ◽  
Jan Lagerwall
Keyword(s):  
Carbon Nanotube ◽  
Liquid Crystals ◽  
Lyotropic Liquid Crystals ◽  
Filament Formation

Electro optical phenomena in lyotropic liquid crystals

1980 ◽  
Vol 28 (18) ◽  
pp. 608-612 ◽  
Author(s):  
D. Senatra ◽  
M. Vannini ◽  
A. P. Neri
Keyword(s):  
Liquid Crystals ◽  
Lyotropic Liquid Crystals ◽  
Optical Phenomena
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