Special Issue "Programmable Anisotropic Materials and Composites"
A special issue of Materials (ISSN 1996-1944).
Deadline for manuscript submissions: 30 April 2021.
Interests: soft robotics; shape-reconfigurable devices; stimuli-responsive polymer composites; liquid crystalline polymers; self-assembly of soft matters
Programmable anisotropic materials and composites are attractive because of their directed material properties, including mechanical, thermal, electrical, magnetic, and optical properties. Recently, programmable anisotropic materials have also offered the opportunity to study soft robotics, self-assembly, and shape-reconfigurable materials and devices.
The purpose of this Special Issue is to collect high-quality articles in the field of liquid crystalline materials, magnetic composites, as well as novel anisotropic materials programmed by various external stimuli including electrical fields, temperature gradient, spatial confinement, capillary force, and shear force.
It is my pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome.
Prof. Dr. Jeong Jae Wie
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.
- liquid crystalline materials
- magnetic composites
- programmable materials
- stimuli-responsive materials
- anisotropic materials
- soft robotics
- shape-reconfigurable materials
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
1. Title: Virus-like Particles as Self-Assembly, Anisotropic, Shape-reconfigurable Materials
Authors: Mariana Andrade-Medina and Mauricio Carrillo-Tripp
Abstract: A virus is a biological complex formed by an infecting genome inside an outer protein shell called capsid. In many cases, it is possible to form empty capsids in vitro. Such particles, referred to as virus-like particles or VLPs, are monodispersed and retain the nanoscale size and shape of the original virus particle. VLPs have remarkable geometric and physicochemical features. Under the right conditions, they reversibly self-assemble. Changes in pH or salt concentration can reconfigure their shape. Furthermore, VLPs show anisotropic behaviors even though they have symmetrical structures. Here, we will examine a range of applications and implications of VLP-based nanomaterials, focusing on exciting new advancements in their rational design.
2. Title: Properties of dislocation drag from phonon wind at ambient conditions
Author: Daniel N. Blaschke
Abstract: It is well known that under plastic deformation, dislocations are not only created but also move through the crystal, and their mobility is impeded by their interaction with the crystal structure. At high stress and temperature, this "drag" is dominated by phonon wind, i.e. the scattering off phonons. Employing the semi-isotropic approach discussed in detail in [J. Phys. Chem. Solids 124 (2019) 24], we discuss here the approximate functional dependence on dislocation velocity in various regimes between a few percent of transverse sound speed c_t and c_t (where c_t is the effective average transverse sound speed of the
polycrystal). In doing so, we find an effective functional form for dislocation drag B(v) for different slip systems and dislocation characters at fixed (room) temperature and low pressure.
3. Title: Hierarchically Ordered Nanostructures on a Chemically Defined Surface via Flow-Enabled Self-Assembly
Authors: Ha Ryeong Cho; Woon-Ik Park; Myunghwan Byun
Abstract: By capitalizing on two consecutive self-assembly processes at different length scales, hierarchically ordered structures composed of diblock copolymers on gradient chemically patterned surface were crafted. A chemically modified surface at micrometer scale was first fabricated by flow-enabled self-assembly of polymer lines, followed by the physical detachment of weakly deposited polymer, resulting in physically adsorbed polymer stripes on the Si substrate [1-2]. Subsequently, asymmentric diblock copolymer, poly(styrene-b-dimethylsiloxane) (PS-b-PDMS), was spin-coated and treated with solvent vapor for unfavorable interfacial interaction-driven destabilization of diblock copolymer thin film and simulataneous microphase separation of immiscible blocks, thus giving highly ordered nanocylinders in spatially defined surface at micrometer scale. Selection of PS-b-PDMS as the target diblock copolymer was strongly motivated with easy organic-inorganic trasfromation of nanostructures through plasma treatment . The entire experimental results were carefully analyzed using optical microscopy (OM), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). Notably, ultrathin, chemically defined polymer stripes were well-prepared in a simple, unconventional, and remarkably controllable manner at low cost, dispensing with the need for costly and multistep lithography techniques. These hierarchically ordered structures may offer as a promising template for the potential applications such as optics, electronics, optoelectronics with tunable functionalities, and desirable spatial arrangement.
4. Title: Electrical Switching between Reflective and Transparent States in Polymer Stabilized Cholesteric Liquid Crystals
Authors: Kyung Min Lee, Timothy J. White, Timothy J. Bunning, and Michael E. McConney
We report on a unique color switching in polymer stabilized cholesteric liquid crystals (PSCLCs) with negative dielectric anisotropy. The electrical switching is enabled in these thin PSCLC samples through a DC-field induced pitch variation across the liquid crystal cell. At lower DC-fields a relatively small non-linear pitch variation across the thickness of the cell shifts the PSCLC reflection to longer wavelengths. At higher DC voltages a strong non-linearity in the cholesteric liquid crystal pitch and the spectral reflection disappears and becomes transparent. This transparency is created by the combination of a strongly chirped pitch and relatively small thickness of the cells, which creates a PSCLC with such a strong variation in pitch that there is no spectral reflection pitches associated with any wavelength to lead to reflection. By adjusting the DC field strength, different colored reflections can be addressed. The switching behavior of the PSCLC can be potentially used in display applications.
5. Title: Contactless Manipulation of Soft Robots
Author: Jae Gwang Kim, Jeong Eun Park, Su Kyoung Won, Jisoo Jeon, Jeong Jae Wie
6. Title: Fractionation of lignin for selective shape memory effects of its derivatives at elevated temperatures
Authors: Ngoc A. Nguyen, Peter V. Bonnesen, Christopher C. Bowland and Amit K. Naskar
7. Title: Development of the functionalized nanocomposite materials for adsorption/decontamination of radioactive pollutants
Authors: Gyo Eun Gu1,2, Ho Seok Park2*, and Jin-Yong Hong1*