scholarly journals Thermally induced bilayered crystals in a solution-processed polycrystalline thin film of phenylterthiophene-based monoalkyl smectic liquid crystals and their effect on FET mobility

RSC Advances ◽  
2017 ◽  
Vol 7 (89) ◽  
pp. 56586-56593 ◽  
Author(s):  
Hao Wu ◽  
Hiroaki Iino ◽  
Jun-ichi Hanna
Keyword(s):  
Thin Film ◽  
Phase Transition ◽  
Liquid Crystals ◽  
Smectic Liquid Crystals ◽  
Polycrystalline Thin Film ◽  
Solution Processed ◽  
Thermally Induced

Herein, a series of asymmetric monoalkyl terthiophene derivatives, Ph-(Tp)3-Cn, (6 ≤ n ≤ 18), were synthesized to study the phase transition from monolayered crystal to bilayered crystal, leading to a significant increase of OFET mobility.

scholarly journals Phase transition and dewetting of a 5CB liquid crystal thin film on a topographically patterned substrate

RSC Advances ◽  
2019 ◽  
Vol 9 (38) ◽  
pp. 21685-21694 ◽  
Author(s):  
Palash Dhara ◽  
Rabibrata Mukherjee
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Phase Transition ◽  
Liquid Crystal ◽  
Patterned Substrates ◽  
Thermally Induced ◽  
Patterned Substrate ◽  
5Cb Liquid Crystal

Thermally induced nematic to isotropic (N–I) phase transition and dewetting of 5CB liquid crystal thin films on flat and topographically patterned substrates.

All-Solution-Processed Transparent Thin Film Transistor and Its Application to Liquid Crystals Driving

2013 ◽  
Vol 25 (23) ◽  
pp. 3209-3214 ◽  
Author(s):  
Kwang-Ho Lee ◽  
Sang-Mook Kim ◽  
Huisu Jeong ◽  
Yusin Pak ◽  
Hui Song ◽  
...  
Keyword(s):  
Thin Film ◽  
Liquid Crystals ◽  
Thin Film Transistor ◽  
Solution Processed ◽  
Transparent Thin Film Transistor

scholarly journals Statistical Physics Approach to Liquid Crystals: Dynamics of Mobile Potts Model Leading to Smectic Phase, Phase Transition by Wang–Landau Method

Entropy ◽  
2020 ◽  
Vol 22 (11) ◽  
pp. 1232
Author(s):  
V. Thanh Ngo ◽  
Phuong-Thuy Nguyen ◽  
Hung T. Diep
Keyword(s):  
Phase Transition ◽  
Liquid Crystals ◽  
Potts Model ◽  
High Performance ◽  
Statistical Physics ◽  
Film Surface ◽  
Smectic Phase ◽  
Isotropic Phase ◽  
Smectic Liquid Crystals ◽  
Layer By Layer

We study the nature of the smectic–isotropic phase transition using a mobile 6-state Potts model. Each Potts state represents a molecular orientation. We show that with the choice of an appropriate microscopic Hamiltonian describing the interaction between individual molecules modeled by a mobile 6-state Potts spins, we observe the smectic phase dynamically formed when we cool the molecules from the isotropic phase to low temperatures (T). In order to elucidate the order of the transition and the low-T properties, we use the high-performance Wang–Landau flat energy-histogram technique. We show that the smectic phase goes to the liquid (isotropic) phase by melting/evaporating layer by layer starting from the film surface with increasing T. At a higher T, the whole remaining layers become orientationally disordered. The melting of each layer is characterized by a peak of the specific heat. Such a succession of partial transitions cannot be seen by the Metropolis algorithm. The successive layer meltings/evaporations at low T are found to have a first-order character by examining the energy histogram. These results are in agreement with experiments performed on some smectic liquid crystals.

Critical fluctuations at the untilted-tilted phase transition in chiral smectic liquid crystals

2000 ◽  
Vol 62 (6) ◽  
pp. R7599-R7602 ◽  
Author(s):  
Seiji Shibahara ◽  
Jun Yamamoto ◽  
Yoichi Takanishi ◽  
Ken Ishikawa ◽  
Hideo Takezoe
Keyword(s):  
Phase Transition ◽  
Liquid Crystals ◽  
Smectic Liquid Crystals ◽  
Critical Fluctuations

Control of Transmittance by Thermally Induced Phase Transition in Guest-Host Liquid Crystals

2018 ◽  
Vol 2 (10) ◽  
pp. 1800066 ◽  
Author(s):  
Seung-Won Oh ◽  
Sang-Hyeok Kim ◽  
Tae-Hoon Yoon
Keyword(s):  
Phase Transition ◽  
Liquid Crystals ◽  
Thermally Induced
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