H
Haluk Özbek
Researcher at Istanbul Technical University
Publications - 25
Citations - 255
Haluk Özbek is an academic researcher from Istanbul Technical University. The author has contributed to research in topics: Liquid crystal & Phase transition. The author has an hindex of 8, co-authored 25 publications receiving 220 citations. Previous affiliations of Haluk Özbek include Katholieke Universiteit Leuven & Feza Gürsey Institute.
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Journal ArticleDOI
Critical behavior of a nonpolar smectogen from high-resolution birefringence measurements.
TL;DR: The isotropic internal field assumption by the Vuks-Chandrasekhar-Madhusudana model is adequate to extract the critical behavior of S(T) from the optical birefringence data, signaling the second-order nature of the N-SmA transition.
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Critical behaviour at the isotropic–nematic and nematic–smectic A phase transitions of 4‐butyloxyphenyl 4′‐decyloxybenzoate liquid crystal from refractive index data
TL;DR: In this article, high-resolution experimental data on the temperature dependence of the refractive index in the isotropic (I), nematic (N) and smectic A (SmA) phases of the 4-butyloxyphenyl 4-decyloxybenzoate ( ) liquid crystal was presented.
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A simple method to determine high-accuracy refractive indices of liquid crystals and the temperature behavior of the related optical parameters via high-resolution birefringence data
TL;DR: In this paper, a simple procedure was proposed to determine high-accuracy extraordinary (ne) and ordinary (no) refractive indices of liquid crystals both in the N and Sm A phases based on the birefringence measurements.
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High-resolution birefringence investigation of octylcyanobiphenyl (8CB): an upper bound on the discontinuity at the smectic-A to nematic phase transition.
M.C. Cetinkaya,M.C. Cetinkaya,Sevtap Yildiz,Haluk Özbek,Patricia Losada-Pérez,Jan Leys,Jan Thoen +6 more
TL;DR: It is found that the Sm-A-N phase transition is continuous and the temperature derivative of the order parameter exhibits a power law divergence with a critical exponent that is consistent with the value α = 0.31 ± 0.03 for the specific heat capacity obtained by ASC.
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The effect of -COOH functionalized carbon nanotube doping on electro-optical, thermo-optical and elastic properties of a highly polar smectic liquid crystal
TL;DR: In this article, the effect of carboxyl group (COOH) functionalized multi-walled carbon nanotubes (f-MWCNTs) on physical properties of a highly polar smectic liquid crystal octyl cyanobiphenyl (8CB) was investigated.