Special Issues

Gels publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Gel-Based Materials for Intelligent Sensors and Self-Powered Nanogenerators submission deadline 20 Nov 2025 | 9 articles | Viewed by 11720 | Submission Open
Keywords: ionogels; organogels; and soft elastomers; carbon nanomaterials; smart sensing; self-powered nanogenerators; Internet of Things; real-time monitoring
(This special issue belongs to the Section Gel Applications)
Development and Applications of Advanced Geopolymer Gel Materials submission deadline 20 Nov 2025 | 2 articles | Viewed by 1099 | Submission Open
Keywords: synthesis; advanced materials; waste materials; hydrogel; nanomaterials; porous materials; characterization; wastewater treatment; environmental protection; construction application
(This special issue belongs to the Section Gel Analysis and Characterization)
Advanced Gels for Oil Recovery (2nd Edition)
edited by and
submission deadline 25 Nov 2025 | 5 articles | Viewed by 8464 | Submission Open
Keywords: application of polymer gels in improved oil recovery; theory of polymer gels in improved oil recovery; synthesis and characterization of advanced polymer gels; structure-property relationships of novel polymer; unconventional oil and gas exploration and development
(This special issue belongs to the Section Gel Applications)
Advanced Hydrogels for Regenerative Medicine and Tissue Engineering (3rd Edition)
edited by , and
submission deadline 30 Nov 2025 | 6 articles | Viewed by 25734 | Submission Open
Keywords: hydrogels; tissue engineering; regenerative medicine; 3D bioprinting; multifunctional; disease models; scaffolds; stem cells; extracellular matrix
(This special issue belongs to the Section Gel Applications)
Recent Research on Alginate Hydrogels in Bioengineering Applications submission deadline 30 Nov 2025 | 6 articles | Viewed by 22868 | Submission Open
Keywords: alginate hydrogel; smart hydrogels; bioresponsive hydrogels; processing of hydrogels; material properties; bioengineering applications; biomedical applications
(This special issue belongs to the Section Gel Applications)
Alginate-Based Gels: Preparation, Characterization and Application (2nd Edition)
edited by and
submission deadline 30 Nov 2025 | 6 articles | Viewed by 11961 | Submission Open
Keywords: alginate hydrogel  ; alginate gel  ; alginate composite material; synthesis and characterization of alginate; applications of alginate; theory and simulation of alginate
(This special issue belongs to the Section Gel Applications)
Design and Optimization of Pharmaceutical Gels (2nd Edition) submission deadline 30 Nov 2025 | 3 articles | Viewed by 10297 | Submission Open
Keywords: gelation materials; novel gel-based delivery systems; intelligent hydrogels; in situ gels; emulsion gels; nanogels; vesicular gels; microgels
(This special issue belongs to the Section Gel Applications)
Polysaccharide Gels for Biomedical and Environmental Applications submission deadline 30 Nov 2025 | 7 articles | Viewed by 10013 | Submission Open
Keywords: natural and modified polysaccharides; dynamic and photoreactive crosslinks; (nano)gels; gel composites and 3D-printed constructs; structure– property– application relationships; drug delivery and diagnosis in cancer and other diseases; wound dressing and tissue engineering; sensors; environmental applications
(This special issue belongs to the Section Gel Applications)
Advances in Chitin- and Chitosan-Based Hydrogels (2nd Edition)
edited by
submission deadline 30 Nov 2025 | 4 articles | Viewed by 8865 | Submission Open
Keywords: chitin; chitosan; chitin/chitosan derivatives; hydrogels; (nano)composites; tissue engineering; drug delivery; chitosan applications
(This special issue belongs to the Section Gel Applications)
Functional Gels for Dental Applications
edited by , and Anna Carolina Volpi Mello-Moura
submission deadline 30 Nov 2025 | 4 articles | Viewed by 8755 | Submission Open
Keywords: functional gels; hydrogels; biomaterials; dental applications; oral disease prevention; regenerative dentistry
(This special issue belongs to the Section Gel Processing and Engineering)
Edible Coatings and Film: Gel-Based Innovations submission deadline 30 Nov 2025 | 3 articles | Viewed by 7024 | Submission Open
Keywords: gel-based materials; edible coatings; food preservation; sustainable packaging; biopolymers; active packaging; intelligent packaging; food quality; shelf-life extension; environmental impact; food safety
(This special issue belongs to the Section Gel Applications)
Properties and Structure of Plant-Based Emulsion Gels
edited by Cynthia Fontes-Candia, and
submission deadline 30 Nov 2025 | 3 articles | Viewed by 6181 | Submission Open
Keywords: emulsion gels; food application; fat replacers; lipid carriers; bioactive carriers; biopolymers; encapsulation; novel characterization methods; molecular modelling; multi-scale characterization
(This special issue belongs to the Section Gel Analysis and Characterization)
Advances in Protein Gels and Their Applications
edited by Qi Han and Junhua Li
submission deadline 30 Nov 2025 | 3 articles | Viewed by 5969 | Submission Open
Keywords: protein gels; protein structure; protein aggregation; hydrogels; gelling properties
(This special issue belongs to the Section Gel Applications)
Characterization Techniques for Hydrogels and Their Applications submission deadline 30 Nov 2025 | 5 articles | Viewed by 5344 | Submission Open
Keywords: characterization; spectroscopies; NMR; XPS; mechanical properties
(This special issue belongs to the Section Gel Analysis and Characterization)
Polymer Aerogels and Aerogel Composites submission deadline 30 Nov 2025 | 4 articles | Viewed by 4397 | Submission Open
Keywords: aerogels; novel polymer aerogels; aerogel composites; structure-to-property relationship; characterization; applications
(This special issue belongs to the Section Gel Processing and Engineering)
Research and Application of Injectable Hydrogels
edited by and
submission deadline 30 Nov 2025 | 1 articles | Viewed by 1965 | Submission Open
Keywords: injectable hydrogel; biomechanics drug delivery; stimuli-responsive hydrogel; theranostics
(This special issue belongs to the Section Gel Applications)
Current Research on Eutectogels submission deadline 30 Nov 2025 | 1 articles | Viewed by 1573 | Submission Open
Keywords: eutectogel; gel; deep eutectic solvents; polymer; biomaterials; applications
(This special issue belongs to the Section Gel Applications)
Sustainable Functional Hydrogels in Flexible Electronics, Energy and Thermoelectrics submission deadline 30 Nov 2025 | 1 articles | Viewed by 1388 | Submission Open
Keywords: functional hydrogels; flexible electronic; sensor and actuators; thermoelectric; energy; batteries
(This special issue belongs to the Section Gel Analysis and Characterization)
Hydrogels for Bone Regeneration (2nd Edition)
edited by
submission deadline 30 Nov 2025 | 2 articles | Viewed by 589 | Submission Open
Keywords: hydrogels; polymer gels; bone; bone regeneration; bone tissue engineering; osteoblasts; osteoclasts
(This special issue belongs to the Section Gel Applications)
Advancements in Biopolymer-Based Functional Hydrogels for Intelligent Wearable Devices and Textiles
edited by Hong Zhao and
submission deadline 30 Nov 2025 | 1 articles | Viewed by 509 | Submission Open
Keywords: biopolymer-based hydrogels; sustainable microstructure designs; intelligent wearables
(This special issue belongs to the Section Gel Applications)
Biopolymeric Hydrogels for Drug Delivery and Tissue Regeneration
edited by Nairrita Majumder and Nandita Das
submission deadline 30 Nov 2025 | Viewed by 198 | Submission Open
Keywords: gels; hydrogels; wound healing; chronic wounds; burn; tissue scaffolding; tissue engineering; anti-microbial applications
(This special issue belongs to the Section Gel Applications)
Food Gels: Structure and Application
edited by and Kristina Ramanauskienė
submission deadline 30 Nov 2025 | Viewed by 187 | Submission Open
Keywords: food gels; proteins; polysaccharides; lipids; formulation and structure design; structure– property relationship; gel-based foods
(This special issue belongs to the Section Gel Processing and Engineering)
Recent Development and Theoretical View of Physical Gels
edited by and
submission deadline 30 Nov 2025 | Viewed by 165 | Submission Open
Keywords: physical gels; mechanical strength; resilience; responsiveness; drug delivery; tissue engineering; food technology
(This special issue belongs to the Section Gel Analysis and Characterization)
Innovative Gels: Structure, Properties, and Emerging Applications submission deadline 20 Dec 2025 | 4 articles | Viewed by 5514 | Submission Open
Keywords: hydrogels; organogels; gel characterization; gel properties; gel applications
(This special issue belongs to the Section Gel Analysis and Characterization)
Hydrogel-Based Scaffolds with a Focus on Medical Use (3rd Edition)
edited by and
submission deadline 20 Dec 2025 | 3 articles | Viewed by 3911 | Submission Open
Keywords: hydrogel-based scaffolds; resorbable scaffolds; synthesis of biomaterials; mesenchymal stromal cells; bioengineered models; bone regeneration; cartilage regeneration; skin regeneration
(This special issue belongs to the Section Gel Applications)
Synthesis and Applications of Hydrogels (3rd Edition)
edited by
submission deadline 20 Dec 2025 | 3 articles | Viewed by 2944 | Submission Open
Keywords: biomaterials; sensors and actuators; adhesives; flexible electronics; 3D printing; drug delivery; network
(This special issue belongs to the Section Gel Chemistry and Physics)
Gels for Energy Applications
edited by Panpan Zhao and
submission deadline 20 Dec 2025 | 2 articles | Viewed by 2308 | Submission Open
Keywords: gels; bio-based materials; phase change materials; energy storage/release; thermal management
(This special issue belongs to the Section Gel Applications)
Advances in Cellulose-Based Gels submission deadline 20 Dec 2025 | 1 articles | Viewed by 413 | Submission Open
Keywords: biomedical applications; drug delivery systems; functional biomaterials; environmental application; electrochemical materials; coatings and films; sustainable materials
(This special issue belongs to the Section Gel Chemistry and Physics)
Natural Bioactive Compounds and Gels submission deadline 25 Dec 2025 | 4 articles | Viewed by 19959 | Submission Open
Keywords: polyphenols; bioactive compounds; HPLC; biological activity; gelling agents; food fortification; functional additives; bioavailability; active coatings; micro- and nanocapsules; carbohydrates; hydrocolloids; rheology; thixotropy
(This special issue belongs to the Section Gel Applications)
Gels: 10th Anniversary submission deadline 31 Dec 2025 | 13 articles | Viewed by 25158 | Submission Open
Keywords: hydrogels with hierarchical and self-assembled structures; environmentally sustainable; compatible and resorbable hydrogels; load-bearing and self-healing hydrogels; hydrogels for cell encapsulation and bio-fabrication; hydrogels for micro-patterning; micro-fluidic devices and high-throughput screening; hydrogels for injectable; in situ gelling and minimally invasive applications; hydrogels for modulating the immune response; hydrogels for spatiotemporal delivery of growth factors; particulate; nano- and micro-structured hydrogels for drug delivery; hydrogels for protein; RNA and DNA delivery; hydrogels in medicine; biotechnology and pharmacy; hydrogels in tissue engineering and regenerative medicine; hydrogels in cosmetics; hygiene and personal care products; hydrogels in agriculture; food production and eco-friendly applications; hydrogels in electro-magneto-mechanical devices; hydrogels in oil and gas exploration; hydrogels in energy applications; hydrogel in chemical processing
(This special issue belongs to the Section Gel Applications)
Advanced Hydrogels for Tissue Engineering and Drug Delivery (2nd Edition)
edited by
submission deadline 31 Dec 2025 | 3 articles | Viewed by 22824 | Submission Open
Keywords: biomaterial; hydrogel; tissue engineering; smart drug delivery; biopolymers
(This special issue belongs to the Section Gel Applications)
Thixotropic Gels: Mechanisms, Functions and Applications submission deadline 31 Dec 2025 | 6 articles | Viewed by 17152 | Submission Open
Keywords: thixotropy; self-assembly; organogels; rheology; applications; 3D-printing gels
(This special issue belongs to the Section Gel Analysis and Characterization)
Recent Advances in Biopolymer Gels (2nd Edition) submission deadline 31 Dec 2025 | 6 articles | Viewed by 11349 | Submission Open
Keywords: synthesis and characterization of biodegradable biopolymers; approaches for biodegradable biopolymers (wastewater treatment); biodegradable biopolymeric material with properties of detoxification; bioremediation; or bio-absorption; biopolymer gels in the food industry; biopolymer gels for controlled release
(This special issue belongs to the Section Gel Analysis and Characterization)
Smart Hydrogel for Wound Healing and Tissue Repair
edited by Xiayi Xu and Boguang Yang
submission deadline 31 Dec 2025 | 2 articles | Viewed by 9608 | Submission Open
Keywords: hydrogel; wound healing; tissue repair; stimuli-responsive; wound dressing; regenerative medicine; biomedical application; anti-inflammation; biomaterials; bio-adhesion
(This special issue belongs to the Section Gel Analysis and Characterization)
Gel-Based Materials for Sensing and Monitoring
edited by
submission deadline 31 Dec 2025 | 4 articles | Viewed by 9460 | Submission Open
Keywords: gel-based materials; wearable sensors; stimuli-responsive gels; self-healing materials; biocompatibility; real-time monitoring
(This special issue belongs to the Section Gel Applications)
State-of-the Art Gel Research in USA submission deadline 31 Dec 2025 | 3 articles | Viewed by 9337 | Submission Open
Keywords: gels; chemistry; physics; characterization; processing; applications
(This special issue belongs to the Section Gel Chemistry and Physics)
Advanced Gels in the Food System
edited by Xiaokang Na, Wuchao Ma and
submission deadline 31 Dec 2025 | 4 articles | Viewed by 5551 | Submission Open
Keywords: protein hydrogels; polysaccharide gels; nanogels; oleogels; food texture improvement; sustainable food development
(This special issue belongs to the Section Gel Analysis and Characterization)
Hydrogels with Appropriate/Tunable Properties for Biomedical Applications (3rd Edition)
edited by , and Feifei Sun
submission deadline 31 Dec 2025 | 4 articles | Viewed by 4232 | Submission Open
Keywords: functional hydrogels; biomedical applications; adhesives; smart hydrogels; medical devices; health diagnosis
(This special issue belongs to the Section Gel Applications)
Preparation, Structure-Property Relationships, and Applications of Emulsion Gels
edited by Peilong Li, Tongze Zhang, Saphwan Al-Assaf and
submission deadline 31 Dec 2025 | 2 articles | Viewed by 3815 | Submission Open
Keywords: emulsion; gel; polymer; oil; rheology; interfacial phenomena; microstructure; food structuring; bioactive delivery
(This special issue belongs to the Section Gel Analysis and Characterization)
Functional Hydrogels: Design, Processing and Biomedical Applications
edited by and
submission deadline 31 Dec 2025 | 2 articles | Viewed by 3489 | Submission Open
Keywords: functional hydrogels; biomedical applications; drug delivery systems; tissue engineering; 3D bioprinting; stimuli-responsive materials; regenerative medicine
(This special issue belongs to the Section Gel Applications)
Innovative Approaches of Biopolymer-Based Hydrogels: Development, Characterization, and Biomedical Applications submission deadline 31 Dec 2025 | 4 articles | Viewed by 3178 | Submission Open
Keywords: hydrogels; biopolymer; sensitive hydrogels; functional hydrogels; biomaterials; synthetic materials; drug delivery; cell carrier; tissue engineering
(This special issue belongs to the Section Gel Applications)
Conductive Gels: Preparation, Properties and Applications submission deadline 31 Dec 2025 | 1 articles | Viewed by 2915 | Submission Open
Keywords: hydrogels; aerogels; cryogels; composites; electronic conductivity; conducting polymers; carbon materials; conducting fillers; self-healing; stimuli-responsive behavior; sensors; energy storage; drug delivery; water purification
(This special issue belongs to the Section Gel Applications)
Recent Advances in Multi-Material Hydrogel Bioinks for 3D Bioprinting
edited by and
submission deadline 31 Dec 2025 | 1 articles | Viewed by 2808 | Submission Open
Keywords: bioprinting; multi-material bioink; biomaterials; hydrogel; tissue engineering; regenerative medicine; flexible wearable devices; health monitoring
(This special issue belongs to the Section Gel Processing and Engineering)
Synthesis and Application of Aerogel (2nd Edition)
edited by Guanglei Zhang
submission deadline 31 Dec 2025 | 2 articles | Viewed by 2741 | Submission Open
Keywords: aerogel; synthesis; property; application
(This special issue belongs to the Section Gel Analysis and Characterization)
Polymer Gels for Oil Recovery and Industry Applications
edited by Yinbo He, , and Jingyang Pu
submission deadline 31 Dec 2025 | 3 articles | Viewed by 2348 | Submission Open
Keywords: polymer gel; polymer flooding; enhanced oil recovery; intelligent gel; temperature resistance; salt resistance; flow behavior
(This special issue belongs to the Section Gel Applications)
Recent Advances in Multi-Functional Polymer-Based Hydrogels submission deadline 31 Dec 2025 | 2 articles | Viewed by 2132 | Submission Open
Keywords: multi-functional polymer-based hydrogels; biomedicine; environmental science; soft robotics; mechanical strength; self-healing properties; stimuli-responsive behavior; conductivity; bioactivity
(This special issue belongs to the Section Gel Analysis and Characterization)
Application of Gel Dosimetry
edited by Gabriele Magugliani and Eros Mossini
submission deadline 31 Dec 2025 | 3 articles | Viewed by 2040 | Submission Open
Keywords: radiotherapy; dosimetry; gel dosimetry; quality assurance; polymer gels; radiochromic gels; dosimetric phantom; radiation chemistry
(This special issue belongs to the Section Gel Chemistry and Physics)
Safety of Aerogel Materials
edited by and
submission deadline 31 Dec 2025 | 1 articles | Viewed by 2012 | Submission Open
Keywords: aerogels; safety; safety characteristics; thermal safety; environmental impacts; process safety; occupational health risks; lifecycle assessment; safety applications
(This special issue belongs to the Section Gel Processing and Engineering)
Novel Gels for 3D Bioprinting in Tissue Engineering submission deadline 31 Dec 2025 | 2 articles | Viewed by 1867 | Submission Open
Keywords: bioinks; bioprinting; biofabrication; printability; stimuli-responsive gels; rheology; tissue-engineering; 3D bioprinting
(This special issue belongs to the Section Gel Applications)
Advances in Engineering Emulsion Gels for Food Application submission deadline 31 Dec 2025 | 2 articles | Viewed by 1427 | Submission Open
Keywords: food gels; hydrogels; emulgels; oleogels; natural biopolymers; food gel product design; functional food
(This special issue belongs to the Section Gel Processing and Engineering)
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