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Polymers
Special Issues
Polymer-Based Metamaterials and Metastructures
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Polymer-Based Metamaterials and Metastructures

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Composites and Nanocomposites".

Deadline for manuscript submissions: 31 May 2025 | Viewed by 2358

Special Issue Editors

Dr. Yu Sun

E-Mail Website
Guest Editor
School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Interests: multiscale simulation; intelligent design; kirigami/origami metastructure; soft actuator; flexible sensor
Special Issues, Collections and Topics in MDPI journals
Dr. Laihao Yang

E-Mail Website
Guest Editor
School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Interests: bio-inspired soft robotics; continuum robotics; intelligent sensing; intelligent control; intelligent damage detection; intelligent maintenance
Special Issues, Collections and Topics in MDPI journals
Dr. Di Zhang

E-Mail Website
Guest Editor
School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Interests: composite structure design; damage mechanics; multiscale design and modeling; 3D-printed composites; auxetic structure

Special Issue Information

Dear Colleagues,

The metamaterial (or metastructure as structural level scale) is an emerging class of artificial composite with unique properties which is unusual in traditional natural materials.  With the development from hard matter to soft matter, polymer-based metamaterials and metastructures have recently attracted significant attention owning to their novel applications, such as actuation, sensing, energy harvesting, computation and others. In particular, the joining of functional polymers and metamaterials/metastructures provides novel and smart characteristics and further broadens their application boundary.

This Special Issue focuses on the theory, design, fabrication, and related applications of polymer-based metamaterials and metastructures, collecting recent research in the related field. The issue will not only cover subjects in electromagnetics and optics but also acoustics, mechanics, thermodynamics, materials science, condensed matter, and several other disciplines.

Dr. Yu Sun
Dr. Laihao Yang
Dr. Di Zhang
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 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. Polymers 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

  • metamaterials/metastructures
  • metasurfaces
  • reprogrammable/reconfigurable metastructures
  • intelligent metastructures
  • multiphysics metastructures
  • chiral metastructures
  • nonlinear aspects of metastructures
  • deep learning design

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (2 papers)

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Research

24 pages, 4435 KiB  
Article
Parameter-Independent Deformation Behaviour of Diagonally Reinforced Doubly Re-Entrant Honeycomb
by Levente Széles, Richárd Horváth and Mihály Réger
Polymers 2024, 16(21), 3082; https://doi.org/10.3390/polym16213082 - 31 Oct 2024
Viewed by 694
Abstract
In this study, a novel unit cell design is proposed, which eliminates the buckling tendency of the auxetic honeycomb. The novel unit cell design is a more balanced, diagonally reinforced doubly re-entrant auxetic honeycomb structure (x-reinforced auxetic honeycomb for short). We investigated and [...] Read more.
In this study, a novel unit cell design is proposed, which eliminates the buckling tendency of the auxetic honeycomb. The novel unit cell design is a more balanced, diagonally reinforced doubly re-entrant auxetic honeycomb structure (x-reinforced auxetic honeycomb for short). We investigated and compared this novel unit cell design against a wide parameter range. Compression tests were carried out on specimens 3D-printed with a special, unique, flexible but tough resin mixture. The results showed that the additional, centrally pronounced reinforcements resulted in increased deformation stability; parameter-independent, non-buckling deformation behaviour is achieved; however, the novel structure is no longer auxetic. Mechanical properties, such as compression resistance and energy absorption capability, also increased significantly—An almost four times increase can be observed. In contrast to the deformation behaviour (which became predictable and constant), the mechanical properties can be precisely adjusted for the desired application. This novel structure was also investigated in a highly accurate, validated finite element environment, which showed that critical stress values are formed in well-supported regions, meaning that critical failure is unlikely. Our novel lattice unit cell design elevated the auxetic honeycomb to the realm of modern, high performance and widely applicable lattice structures. Full article
(This article belongs to the Special Issue Polymer-Based Metamaterials and Metastructures)
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34 pages, 14745 KiB  
Article
Analysis of Mechanical Properties and Parameter Dependency of Novel, Doubly Re-Entrant Auxetic Honeycomb Structures
by Levente Széles, Richárd Horváth and Lívia Cveticanin
Polymers 2024, 16(17), 2524; https://doi.org/10.3390/polym16172524 - 5 Sep 2024
Cited by 1 | Viewed by 1311
Abstract
This study proposes a new, doubly re-entrant auxetic unit-cell design that is based on the widely used auxetic honeycomb structure. Our objective was to develop a structure that preserves and enhances the advantages of the auxetic honeycomb while eliminating all negative aspects. The [...] Read more.
This study proposes a new, doubly re-entrant auxetic unit-cell design that is based on the widely used auxetic honeycomb structure. Our objective was to develop a structure that preserves and enhances the advantages of the auxetic honeycomb while eliminating all negative aspects. The doubly re-entrant geometry design aims to enhance the mechanical properties, while eliminating the buckling deformation characteristic of the re-entrant deformation mechanism. The effects of the geometric modification are described and evaluated using two parameters, offset and deg. A series of experiments were conducted on a wide range of parameters based on these two parameters. Specimens were printed via the vat photopolymerization process and were subjected to a compression test. Our aim was to investigate the mechanical properties (energy absorption and compressive force) and the deformation behaviour of these specimens in relation to the relevant parameters. The novel geometry achieved the intended properties, outperforming the original auxetic honeycomb structure. Increasing the offset and deg parameters results in increasing the energy absorption capability (up to 767%) and the maximum compressive force (up to 17 times). The right parameter choice eliminates buckling and results in continuous auxetic behaviour. Finally, the parameter dependency of the deformation behaviour was predicted by analytical approximation as well. Full article
(This article belongs to the Special Issue Polymer-Based Metamaterials and Metastructures)
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