Special Issue "Advances in Blue Phases Liquid Crystals "

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Liquid Crystals".

Deadline for manuscript submissions: 29 February 2020.

Special Issue Editor

Prof. Hui-Yu Chen
E-Mail Website
Guest Editor
National Chung-Hsing University, Department of Physics, Taichung, Taiwan
Interests: Nonlinear optics; Ion effect in liquid crystals; electro-optical response of lqiuid crystals; physics properties; structure; electric-optical reponse of blue phases; the application of liquid-crystal malterials

Special Issue Information

Dear Colleagues,

The existence of blue phases (BPs), a type of liquid-crystal phase with high chirality, has been known for centuries, and they have been the target of theoretical and experimental exploration for the last 50 years. Blue phases exist in higher temperature regimes, close to the isotropic phase, and, unlike other liquid-crystal phases, which display a variety of translational and orientational symmetries, they have symmetry groups that are conventional crystallographic space groups. Thus, they exhibit many crystal-like properties. Fifteen years ago, blue phases were not yet of any technological interest, because they only show up at a very narrow temperature range, which is very far from room temperature. Now, however, there are many reports providing various methods of increasing the thermal stability of BPs, which makes the application of BPs on electro–optical devices possible. In the last ten years, we have seen many publications mention the advantages and uniqueness of BP-based elecro–optical devices; however, at the same time, we find that there are still several open questions and challenges waiting to be solved. The first issue that requires our attention is the different physical properties and electro–optical responses exhibited by the three different blue phases (i.e., BPI, BPII, and BPIII). Until now, most papers have focused solely on BPI. BPII and BPIII are the two missing pieces of the puzzle, which are given attention by only a limited number of papers.

We invite investigators to submit papers which discuss the key points dominating the thermal stability, physical properties, field-induced responses, and electro–optical characteristics of BPs, as well as the applications of different BPs, from theoretical calculation to material exploration and experimental viewing.

Potential topics include, but are not limited to:

  • The development of high-thermal-stability or room-temperature blue phases;
  • The key points of the materials affecting the structure of BPs;
  • The alignment effect on BPs and the way to control the alignment of BPs;
  • The field-induced phenomena of BPs;
  • The electro–optical responses of BPs, in experiments not based on the Kerr effect;
  • New methods of distinguishing different BPs;
  • The relation between the material parameters of LC and the field-induced responses, including the electro–optical characteristics, of BPs;
  • Applications of BPs and prototype demonstration.

Prof. Hui-Yu Chen
Guest Editor

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. Crystals is an international peer-reviewed open access monthly 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 1600 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

  • Blue phase
  • Photonic crystal
  • Photonic application
  • Chirality
  • Electro-optical response
  • Thermal stability
  • Alignment effect

Published Papers (1 paper)

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Research

Open AccessArticle
Symmetry Breaking Induced Pockels Effect in a Tilted Field Switching BPIII Cell
Crystals 2019, 9(11), 598; https://doi.org/10.3390/cryst9110598 - 15 Nov 2019
Abstract
In this study, we propose driving the amorphous blue phase III (BPIII) with a tilted electric field to enhance or magnify its inherent linear electro-optical properties. The electro-optical properties of in-plane-switching (IPS) BPIII and tilted-field-switching (TFS) BPIII cells are compared here. According to [...] Read more.
In this study, we propose driving the amorphous blue phase III (BPIII) with a tilted electric field to enhance or magnify its inherent linear electro-optical properties. The electro-optical properties of in-plane-switching (IPS) BPIII and tilted-field-switching (TFS) BPIII cells are compared here. According to the change in the induced birefringence with varying the strength of the electric field in the TFS-BPIII cell, the Kerr effect occurs in the low electric field and the Pockels effect dominates in the high electric field. In addition, the transmittance of the TFS-BPIII cell depends on the polarity of the applied field from 1 Hz to 10 kHz. It also results in the rise time of the TFS-BPIII cell being almost half of that of the IPS-BPIII cell. These experimental results and discussion allowed us to unravel the mystery of the amorphous BPIII step by step and provide the potential application of BPIII in photonic devices. Full article
(This article belongs to the Special Issue Advances in Blue Phases Liquid Crystals )
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