Special Issue "Advances in Liquid Crystal Nanomaterials"

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Nanomaterials and Nanotechnology".

Deadline for manuscript submissions: 28 February 2021.

Special Issue Editors

Dr. Natália Tomašovičová
Website
Guest Editor
Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
Interests: magnetic fluids; magnetic nanoparticles; colloids; liquid crystal composites; magnetic properties; phase transitions; infrared spectroscopy
Dr. Sergii Burylov
Website
Guest Editor
Institute of Transport Systems and Technologies, Ukrainian National Academy of Sciences, Pisargevskogo St. 5, 49005 Dnipro, Ukraine
Interests: theory of liquid crystals; ferronematics; magnetic properties; confined systems; defects in liquid crystals; phase transitions

Special Issue Information

Dear Colleagues,

Self-assembling organic materials showing liquid crystalline behaviour represent soft matter with unique properties. They are extremely promising anisotropic media for the design of nanocomposite systems. The main motivation for introducing nanoparticles in liquid crystalline matrices is usually to improve their optical and electro-optical or magneto-optical properties as well as to create new materials. The dispersion of guest particles in a liquid crystalline medium has been an active area of research for four decades. There has been a continuously growing interest in this area of research over the last 10 years, and a number of interesting phenomena have been demonstrated. Composite systems—liquid crystals (LCs) doped with different nanoparticles such as gold or semiconducting, ferroelectric, magnetic, or carbon nanotubes—have been subjected to intensive research in an effort to produce materials with unique properties as well as to increase the sensitivity of these materials to external fields. Serious efforts have been made to study and explore the orientation of the particles in these systems. Several approaches have been devised for the generation new functional materials. Promising new directions are LCs for organic electronics; semiconductor devices; energy conversion; LC templating for creating nanostructured materials; synthesizing nanoparticles in liquid crystalline templates or ordering nano- and microparticles; liquid crystal colloids and their potential in photonics and metamaterials; liquid crystal-functionalized polymer fibers; LC elastomer actuators; and drug delivery applications. The interaction between the nanoparticles and self-assembling media strongly depends on the specific combination of the physical properties of both components—thus depending on the molecular structure and elastic properties of LCs as well as on the type, size, and shape of the nanoparticles used as a dopant.

This Special Issue is a timely approach to survey the recent progress in the field of liquid crystal-based nanomaterials and their applications. As such, this Special Issue offers a unique insight into what has been achieved and what remains to be explored in liquid crystal nanomaterials.

Dr. Natália Tomašovičová
Dr. Sergii Burylov
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 papers will be 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 100 words) can be sent to the Editorial Office for announcement on this website.

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. Materials 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 2000 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

  • hybrid and nanostructured LC systems
  • biological, lyotropic, and chromonic LC systems
  • nanoparticle-doped LCs
  • LC polymers, elastomers, colloids, and gels
  • soft nanotechnology and self-assembly
  • orientational ordering and defects
  • magnetic, electric, and optical properties
  • phase transitions
  • theory, modelling, and simulation
  • other subjects related to LC nanomaterials

Published Papers (2 papers)

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Research

Open AccessArticle
Modelling the Surface Plasmon Spectra of an ITO Nanoribbon Grating Adjacent to a Liquid Crystal Layer
Materials 2020, 13(7), 1523; https://doi.org/10.3390/ma13071523 - 26 Mar 2020
Abstract
The reflection and transmission coefficients of an indium tin oxide (ITO) nanoribbon grating placed between a nematic liquid crystal (LC) layer and an isotropic dielectric medium are calculated in the infrared region. Reflection and transmission spectra in the range of 1–5 μm related [...] Read more.
The reflection and transmission coefficients of an indium tin oxide (ITO) nanoribbon grating placed between a nematic liquid crystal (LC) layer and an isotropic dielectric medium are calculated in the infrared region. Reflection and transmission spectra in the range of 1–5 μm related to the surface plasmon excitation in the ITO nanoribbons are obtained. Dependence of the peak spectral position on the grating spacing, the ribbon aspect ratio, and the 2D electron concentration in the nanoribbons is studied. It is shown that director reorientation in the LC layer influences the plasmon spectra of the grating, enabling a control of both the reflection and transmission of the system. The data obtained with our model are compared to the results obtained using COMSOL software, giving the similar results. Full article
(This article belongs to the Special Issue Advances in Liquid Crystal Nanomaterials)
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Open AccessArticle
The Influence of Single-Walled Carbon Nanotubes on the Dynamic Properties of Nematic Liquid Crystals in Magnetic Field
Materials 2019, 12(24), 4031; https://doi.org/10.3390/ma12244031 - 04 Dec 2019
Cited by 1
Abstract
This article aims to study the impact of carbon nanotube dispersions in liquid crystals. A theoretical model for the system’s dynamics is presented, considering the elastic continuum theory and a planar alignment of liquid crystal molecules on the nanotube’s surface. Experimental calculation of [...] Read more.
This article aims to study the impact of carbon nanotube dispersions in liquid crystals. A theoretical model for the system’s dynamics is presented, considering the elastic continuum theory and a planar alignment of liquid crystal molecules on the nanotube’s surface. Experimental calculation of the relaxation times in the magnetic field was made for two cases: when the field was switched on (τon), and when it was switched off (τoff). The results indicate an increase of the relaxation time by about 25% when the magnetic field was switched off, and a smaller increase (about 10%) when the field was switched on, where both were in good agreement with the theoretical values. Full article
(This article belongs to the Special Issue Advances in Liquid Crystal Nanomaterials)
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