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Liquid Crystals, 3rd Edition
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Liquid Crystals, 3rd Edition

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: 1 April 2026 | Viewed by 729

Special Issue Editors

Prof. Dr. Viorel Circu

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Guest Editor
Department of Inorganic Chemistry, Faculty of Chemistry, University of Bucharest, Bucharest, Romania
Interests: liquid crystals; metallomesogens; luminescent materials; inorganic and coordination chemistry
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Doina Manaila-Maximean

E-Mail Website
Guest Editor
Department of Physics, Universitaty Politehnica of Bucharest, Bucharest, Romania
Interests: liquid crystals; polymer-dispersed liquid crystals; nanocomposites; soft matter; dielectric properties; physical properties; optoelectronics; organic solar cells
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Valery A. Loiko

E-Mail Website
Guest Editor
B.I. Stepanov Institute of Physics, Minsk, National Academy of Sciences of Belarus, Minsk, Belarus
Interests: liquid crystals; polymer-dispersed liquid crystals; composite and smart materials; single and multiple scattering of waves in partially ordered disperse media; electro-optic devices; light propagation in metamaterials; photonic crystals; solar cells
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The 3rd Edition of this Special Issue, entitled “Liquid Crystals, 3rd Edition”, will address recent advances in the experimental and theoretical aspects of liquid crystal technology, including their molecular design, synthesis, processing, fabrication, characterization and engineering. With their unique combination of properties related to anisotropic fluids (anisotropy of physical properties and fast orientational response to external fields), liquid crystals are among the most versatile and dynamic soft materials; they have therefore been employed in the manufacturing of display devices, molecular sensors and detectors, optical switches, spatial light modulators, and many others. Researchers have endeavored to explore the self-assembly and supermolecular organization of thermotropic or lyotropic liquid crystals, contributing to the advancement of knowledge in liquid crystals science. This Special Issue will provide authors and research groups with the opportunity to present their studies to the liquid crystal scientific community. We welcome contributions in the form of original research articles or comprehensive review papers; this includes submissions addressing biological, organic and inorganic liquid crystals; metallomesogens; ionic liquid crystals; and liquid crystalline polymers and liquid crystal composites, concerning both experimental and theoretical studies.

Prof. Dr. Viorel Circu
Prof. Dr. Doina Manaila-Maximean
Prof. Dr. Valery A. Loiko
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • liquid crystals
  • ionic liquid crystals
  • metallomesogens
  • nanoparticles
  • liquid crystal composites
  • polymer liquid crystals
  • lyotropic liquid crystals

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Published Papers (2 papers)

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Research

13 pages, 12547 KB  
Article
Orientational Structure and Electro-Optical Properties of Chiral Nematic Droplets with Conical Anchoring
by Kristina A. Feizer, Mikhail N. Krakhalev, Vladimir Yu. Rudyak and Victor Ya. Zyryanov
Molecules 2025, 30(24), 4761; https://doi.org/10.3390/molecules30244761 - 12 Dec 2025
Viewed by 135
Abstract
The polymer dispersed liquid crystals (PDLCs) with conical boundary conditions are considered. PDLC films with different values of the relative chirality parameter N0 of chiral nematic droplets ranging from 0 to 1.32 are studied experimentally and theoretically. In flattened spheroid-shaped chiral nematic [...] Read more.
The polymer dispersed liquid crystals (PDLCs) with conical boundary conditions are considered. PDLC films with different values of the relative chirality parameter N0 of chiral nematic droplets ranging from 0 to 1.32 are studied experimentally and theoretically. In flattened spheroid-shaped chiral nematic droplets, a twisted axial-bipolar structure is formed whose twist angle increases with rising N0 value. Two stable states of the structure are revealed: one with the bipolar axis oriented perpendicular to the short axis of the spheroid and another with the bipolar axis oriented parallel to it. Applying a small voltage causes the bipolar axes of the chiral nematic droplets to reorient parallel to the electric field. The structure is unwound in strong electric fields, and the droplet order parameter reaches a high value of nearly 0.95. These features of the voltage-induced reorientation of the axial-bipolar structure explain the experimentally observed characteristic electro-optical properties of PDLC cells: high transmittance Tmax≅0.90 in the on-state and low control voltages of less than 35 V. The minimum transmittance of the PDLC cells decreases as the value of N0 increases; for samples with N0≥0.60, the contrast ratio exceeds 145. Full article
(This article belongs to the Special Issue Liquid Crystals, 3rd Edition)
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10 pages, 10521 KB  
Article
Electrically Controlled Structures in Cholesteric Droplets with Planar Anchoring
by Oxana O. Prishchepa, Mikhail N. Krakhalev and Anna P. Gardymova
Molecules 2025, 30(22), 4482; https://doi.org/10.3390/molecules30224482 - 20 Nov 2025
Viewed by 365
Abstract
Structure transformations in cholesteric droplets with planar anchoring induced by an electric field are studied experimentally. The radial spherical structure is formed initially, then it transforms into the quasi-nematic untwisting state under the action of an electric field E=1.75 V/μ [...] Read more.
Structure transformations in cholesteric droplets with planar anchoring induced by an electric field are studied experimentally. The radial spherical structure is formed initially, then it transforms into the quasi-nematic untwisting state under the action of an electric field E=1.75 V/μm. The dependence of structure transformations on the voltage switching-off mode is examined. At the one-step voltage-off mode, the Lyre structure is realized in cholesteric droplets at the relative chiral parameter in the range 4.3≤N≤8.5. The axis-symmetric bipolar structure and the low-symmetric planar bipolar structure are obtained at the multi-step voltage-off mode. The possibility of forming such structures and their stability are determined by the type of voltage switching-off mode, the N value, the surface anchoring strength (the value of cholesteric helix pitch), and the presence of the surface point defects. Full article
(This article belongs to the Special Issue Liquid Crystals, 3rd Edition)
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