3D Printing of Gel-Based Materials (2nd Edition)

A special issue of Gels (ISSN 2310-2861). This special issue belongs to the section "Gel Applications".

Deadline for manuscript submissions: 30 April 2026 | Viewed by 411

Special Issue Editors


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Guest Editor
BIOMAT Research Group, University of the Basque Country (UPV/EHU), Escuela de Ingeniería de Gipuzkoa, 20018 Donostia-San Sebastián, Spain
Interests: 3D printing; additive manufacturing; polymers; silicones; hydrogels
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Guest Editor
Department of Biomedical Engineering, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
Interests: biosensors; bioelectronics; supermolecular self-assembly; biomaterials and 3D bioprinting
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Three-dimensional printing, also known as additive manufacturing (AM), is defined as the process of building blocks, layer-upon-layer, making it different from subtractive technologies. In recent years, this area has been expanding and has been applied to different industries, such as medicine, aeronautics, automotive applications, etc. Some advantages of 3D printing over traditional methods are the opportunity to manufacture complex architectures, produce less waste, and reduce production time.

Different materials can be used, including metals, ceramics, or polymers. However, depending on the target, it is more suitable to use one type of material over another. In the case of soft materials, the best choice by far is the use of polymers and special gel-based materials, which can include resins, silicones, or hydrogels.

The aim of the present Special Issue is to advance the state-of-the-art of the synthesis of gel-based materials for different purposes. Therefore, topics of interest for the present Special Issue include the following:

  • The bioprinting of materials that can be used in medical applications;
  • The 3D printing of soft materials;
  • Polymers;
  • Hydrogels;
  • Resins;
  • The synthesis of new soft materials.

Dr. Aitor Tejo-Otero
Dr. Hangyu 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. Gels 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 2100 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

  • polymers
  • 3D printing
  • hydrogels
  • bioengineering
  • bioprinting

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Published Papers (1 paper)

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21 pages, 8320 KiB  
Article
Optimization of SA-Gel Hydrogel Printing Parameters for Extrusion-Based 3D Bioprinting
by Weihong Chai, Yalong An, Xingli Wang, Zhe Yang and Qinghua Wei
Gels 2025, 11(7), 552; https://doi.org/10.3390/gels11070552 - 17 Jul 2025
Viewed by 287
Abstract
Extrusion-based 3D bioprinting is prevalent in tissue engineering, but enhancing precision is critical as demands for functionality and accuracy escalate. Process parameters (nozzle diameter d, layer height h, printing speed v1, extrusion speed v2) significantly influence hydrogel [...] Read more.
Extrusion-based 3D bioprinting is prevalent in tissue engineering, but enhancing precision is critical as demands for functionality and accuracy escalate. Process parameters (nozzle diameter d, layer height h, printing speed v1, extrusion speed v2) significantly influence hydrogel deposition and structure formation. This study optimizes these parameters using an orthogonal experimental design and grey relational analysis. Hydrogel filament formability and the die swell ratio served as optimization objectives. A response mathematical model linking parameters to grey relational grade was established via support vector regression (SVR). Particle Swarm Optimization (PSO) then determined the optimal parameter combination: d = 0.6 mm, h = 0.3 mm, v1 = 8 mm/s, and v2 = 8 mm/s. Comparative experiments showed the optimized parameters predicted by the model with a mean error of 5.15% for printing precision, which outperformed random sets. This data-driven approach reduces uncertainties inherent in conventional simulation methods, enhancing predictive accuracy. The methodology establishes a novel framework for optimizing precision in extrusion-based 3D bioprinting. Full article
(This article belongs to the Special Issue 3D Printing of Gel-Based Materials (2nd Edition))
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