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Lyotropic Chromonic Liquid Crystals - From Viscoelastic Properties to Living Liquid Crystals (Paperback, Softcover reprint of the original 1st ed. 2017)
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Lyotropic Chromonic Liquid Crystals - From Viscoelastic Properties to Living Liquid Crystals (Paperback, Softcover reprint of the original 1st ed. 2017)
Series: Springer Theses
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This thesis describes lyotropic chromonic liquid crystals (LCLCs)
with exotic elastic and viscous properties. The first part of the
thesis presents a thorough analysis of the elastic and viscous
properties of LCLCs as functions of concentration, temperature and
ionic contents, while the second part explores an active nematic
system: living liquid crystals, which represent a combination of
LCLC and living bacteria. LCLCs are an emerging class of liquid
crystals that have shown profound connections to biological systems
in two aspects. First, the assembly process of the chromonic
aggregates is essentially the same as DNA oligomers and other
super-molecular assemblies of biological origin. LCLCs thus provide
an excellent model system for studying physical properties such as
the elasticity and viscosity of these supramolecular assemblies.
Second, LCLCs are biocompatible, thus serving as a unique
anisotropic matrix to interface with living systems such as
bacteria. This thesis deepens our understanding of both aspects.
The noncovalent nature of chromonic aggregation produces the unique
viscoelasticity to be found in LCLCs, which differs dramatically
from that of traditional LCs. Anisotropic interactions between
LCLCs and bacteria lead to fascinating phenomena such as the
deformation of LCLCs with a characteristic wavelength determined by
the elasticity of the LCLCs and the activity of the bacteria,
orientationally controlled trajectories of bacteria and
visualization of 24 nm flagella motion.
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