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The 15th Anniversary of Materials—Recent Advances in Soft Matter

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Soft Matter".

Deadline for manuscript submissions: 20 June 2024 | Viewed by 2675

Special Issue Editor


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Guest Editor
Department of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
Interests: liquid crystals; chiral liquid crystals; ferroelectric liquid crystals; polymer stabilized liquid crystals; nanoparticles in anisotropic fluids; liquid crystal-nanotube dispersions; defects and defect dynamics; phase ordering in soft matter; fractal structures
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Special Issue Information

Dear Colleagues,

Launched in 2008, Materials has provided readers with high-quality content edited by active researchers in materials science for 15 years through a model of sustainable open access and outstanding editorial service. Today, the published papers receive more than 1,500,000 views per month, with readers from more than 150 countries and regions.

We would like to celebrate the 15th anniversary of the journal Materials with a Special Issue on the recent advances in soft matter.

As already suggested by their name, soft materials are those that can be stimulated by very small energies of the order of thermal fluctuations, kT. They possess extremely small elastic constants and the respective deforming forces can be mechanical, electric, magnetic, thermal or even optic in nature. Further, soft matter often exhibits the properties of self-assembly and self-organisation. The main representatives of this class of materials are soft polymers, colloidal solids and liquid crystals, but it also includes granular matter, foams, gels, soft interfaces, surfactants and biological macromolecules.

A fundamental understanding of soft matter is of outstanding importance both from an experimental and theoretical point of view, and simulations can be carried out to be able to control, tune, tailor, enhance and predict their properties. It is then possible to exploit these materials in countless applications, as is already conducted, for example, in packaging materials, the food and beauty industry, healthcare and medicine, displays and switchable optical components, and fabrics.

Contributions to this Special Issue can cover a broad field of topics, as indicated by the keywords, which is by no means exhaustive and should be seen as a general guide.

Dr. Ingo Dierking
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 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 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 2600 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

  • soft polymers
  • colloidal solids
  • liquid crystals (thermotropic or lyotropic)
  • gels, foams, surfactants, soft interfaces, suspensions and complex fluids
  • biological materials
  • granular matter
  • self-assembly and self-organisation
  • active matter
  • soft (tuneable) photonic and metamaterials
  • stimuli responsive soft materials (thermal, electric, magnetic, mechanical and optic)
  • new experimental techniques for soft matter (mechanical, rheological, scattering, imaging and microscopic)
  • theory and simulation of soft matter
  • phase transitions and glass transition
  • application of machine learning to soft matter

Published Papers (2 papers)

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Research

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15 pages, 3063 KiB  
Article
Microwave Synthesis of Poly(Acrylic) Acid-Coated Magnetic Nanoparticles as Draw Solutes in Forward Osmosis
by Sabina Vohl, Irena Ban, Miha Drofenik, Hermina Buksek, Sašo Gyergyek, Irena Petrinic, Claus Hélix-Nielsen and Janja Stergar
Materials 2023, 16(11), 4138; https://doi.org/10.3390/ma16114138 - 01 Jun 2023
Cited by 1 | Viewed by 1166
Abstract
Polyacrylic acid (PAA)-coated magnetic nanoparticles (MNP@PAA) were synthesized and evaluated as draw solutes in the forward osmosis (FO) process. MNP@PAA were synthesized by microwave irradiation and chemical co-precipitation from aqueous solutions of Fe2+ and Fe3+ salts. The results showed that the [...] Read more.
Polyacrylic acid (PAA)-coated magnetic nanoparticles (MNP@PAA) were synthesized and evaluated as draw solutes in the forward osmosis (FO) process. MNP@PAA were synthesized by microwave irradiation and chemical co-precipitation from aqueous solutions of Fe2+ and Fe3+ salts. The results showed that the synthesized MNPs have spherical shapes of maghemite Fe2O3 and superparamagnetic properties, which allow draw solution (DS) recovery using an external magnetic field. Synthesized MNP, coated with PAA, yielded an osmotic pressure of ~12.8 bar at a 0.7% concentration, resulting in an initial water flux of 8.1 LMH. The MNP@PAA particles were captured by an external magnetic field, rinsed in ethanol, and re-concentrated as DS in repetitive FO experiments with deionized water as a feed solution (FS). The osmotic pressure of the re-concentrated DS was 4.1 bar at a 0.35% concentration, resulting in an initial water flux of 2.1 LMH. Taken together, the results show the feasibility of using MNP@PAA particles as draw solutes. Full article
(This article belongs to the Special Issue The 15th Anniversary of Materials—Recent Advances in Soft Matter)
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Review

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20 pages, 7003 KiB  
Review
Research Progress of Electrically Driven Multi-Stable Cholesteric Liquid Crystals
by Kainan Wang, Wentuo Hu, Wanli He, Zhou Yang, Hui Cao, Dong Wang and Yuzhan Li
Materials 2024, 17(1), 136; https://doi.org/10.3390/ma17010136 - 27 Dec 2023
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Abstract
Electrically driven multi-stable cholesteric liquid crystals can be used to adjust the transmittance of incident light. Compared with the traditional liquid crystal optical devices, the multi-stable devices only apply an electric field during switching and do not require a continuous electric field to [...] Read more.
Electrically driven multi-stable cholesteric liquid crystals can be used to adjust the transmittance of incident light. Compared with the traditional liquid crystal optical devices, the multi-stable devices only apply an electric field during switching and do not require a continuous electric field to maintain the various optical states of the device. Therefore, the multi-stable devices have low energy consumption and have become a research focus for researchers. However, the multi-stable devices still have shortcomings before practical application, such as contrast, switching time, and mechanical strength. In this article, the latest research progress on electrically driven multi-stable cholesteric liquid crystals is reviewed, including electrically driven multi-stable modes, performance optimization, and applications. Finally, the challenges and opportunities of electrically driven multi-stable cholesteric liquid crystals are discussed in anticipation of contributing to the development of multi-stable liquid crystal devices. Full article
(This article belongs to the Special Issue The 15th Anniversary of Materials—Recent Advances in Soft Matter)
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