Probing a Microviscosity Change at the Nematic-Isotropic Liquid Crystal Phase Transition by a Ratiometric Flapping Fluorophore

2022 ◽  
Author(s):  
Ryo Kimura ◽  
Hidetsugu Kitakado ◽  
Takuya Yamakado ◽  
Hiroyuki Yoshida ◽  
Shohei Saito
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Condensed Matter ◽  
Crystal Phase ◽  
Soft Condensed Matter ◽  
Liquid Crystal Phase ◽  
Isotropic Liquid ◽  
Crystal Phase Transition ◽  
Liquid Crystal Phase Transition

Understanding the microviscosity of soft condensed matter is important to clarify the mechanisms of chemical, physical or biological events occurring at the nanoscale. Here, we report that flapping fluorophores (FLAP)...

Formation of Zn defects in willemite-type Zn2GeO4 during supercooled liquid-crystal phase transition

2011 ◽  
Vol 98 (22) ◽  
pp. 221907 ◽  
Author(s):  
Yoshihiro Takahashi ◽  
Masataka Ando ◽  
Rie Ihara ◽  
Takumi Fujiwara
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Supercooled Liquid ◽  
Crystal Phase ◽  
Liquid Crystal Phase ◽  
Crystal Phase Transition ◽  
Liquid Crystal Phase Transition

Evidence for a liquid crystal phase transition in two-dimensional electrons in high Landau levels

2002 ◽  
Vol 12 (9) ◽  
pp. 377-380
Author(s):  
K. B. Cooper ◽  
M. P. Lilly ◽  
J. P. Eisenstein ◽  
L. N. Pfeiffer ◽  
K. W. West
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Landau Levels ◽  
Crystal Phase ◽  
Two Dimensional ◽  
Liquid Crystal Phase ◽  
Stripe Phase ◽  
Stripe Order ◽  
Crystal Phase Transition ◽  
Liquid Crystal Phase Transition

Transport measurements of high-mohility two-dimensional electron systems at low temperatures have revealed a large resistance anisotropy around half-filling of excited Landau levels. These results have been attributed to electronic stripe-phase formation with spontaneously broken orientational symmetry. Mechanisms which are known to break the orientational symmetry include poorly-understood crystal structure effects and an in-plane magnetic field, $B_{||}$. Here we report that a large $B_{||}$ also causes the transport anisotropy to persist up to much higher temperatures. In this regime, we find that the anisotropic resistance scales sublinearly with $B_{||}/T$. These observations support the proposal that the transition from anisotropic to isotropic transport reflects a liquid crystal phase transition where local stripe order persists even in the isotropic regime.

In situObservation of Supercooled Liquid–Crystal Phase Transition in Glassy Ferroelectric LaBGeO5

2011 ◽  
Vol 50 (6R) ◽  
pp. 068002 ◽  
Author(s):  
Yoshihiro Takahashi ◽  
Tomomichi Yasuoka ◽  
Minoru Osada ◽  
Rie Ihara ◽  
Takumi Fujiwara
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Supercooled Liquid ◽  
Crystal Phase ◽  
Liquid Crystal Phase ◽  
Crystal Phase Transition ◽  
Liquid Crystal Phase Transition
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