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 | 4 articles | Viewed by 1360 | 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 | Viewed by 120 | 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 | 4 articles | Viewed by 5564 | 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 | 5 articles | Viewed by 15241 | 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)
Design and Optimization of Pharmaceutical Gels (2nd Edition) submission deadline 30 Nov 2025 | 3 articles | Viewed by 6564 | 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)
Alginate-Based Gels: Preparation, Characterization and Application (2nd Edition)
edited by and
submission deadline 30 Nov 2025 | 4 articles | Viewed by 5555 | 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)
Advances in Chitin- and Chitosan-Based Hydrogels (2nd Edition)
edited by
submission deadline 30 Nov 2025 | 1 articles | Viewed by 2127 | 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)
Polysaccharide Gels for Biomedical and Environmental Applications submission deadline 30 Nov 2025 | 2 articles | Viewed by 1863 | 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)
Functional Gels for Dental Applications
edited by , and Anna Carolina Volpi Mello-Moura
submission deadline 30 Nov 2025 | 2 articles | Viewed by 1660 | 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)
Hydrogels in Biomedicine
edited by and
submission deadline 30 Nov 2025 | 2 articles | Viewed by 1254 | Submission Open
Keywords: hydrogels; drug delivery; rheology; characterization; biomedical application; wound healing; nanotechnology; tissue engineering
(This special issue belongs to the Section Gel Analysis and Characterization)
Characterization Techniques for Hydrogels and Their Applications submission deadline 30 Nov 2025 | 3 articles | Viewed by 1233 | Submission Open
Keywords: characterization; spectroscopies; NMR; XPS; mechanical properties
(This special issue belongs to the Section Gel Analysis and Characterization)
Edible Coatings and Film: Gel-Based Innovations submission deadline 30 Nov 2025 | 1 articles | Viewed by 1062 | 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)
Polymer Aerogels and Aerogel Composites submission deadline 30 Nov 2025 | 1 articles | Viewed by 628 | 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)
Current Research on Eutectogels submission deadline 30 Nov 2025 | 1 articles | Viewed by 453 | 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 | Viewed by 391 | Submission Open
Keywords: functional hydrogels; flexible electronic; sensor and actuators; thermoelectric; energy; batteries
(This special issue belongs to the Section Gel Analysis and Characterization)
Research and Application of Injectable Hydrogels
edited by and
submission deadline 30 Nov 2025 | Viewed by 318 | Submission Open
Keywords: injectable hydrogel; biomechanics drug delivery; stimuli-responsive hydrogel; theranostics
(This special issue belongs to the Section Gel Applications)
Gels for Plant-Based Food Applications (2nd Edition)
edited by and
submission deadline 30 Nov 2025 | Viewed by 275 | Submission Open
Keywords: proteins; polysaccharides; lipids; gel structural analysis; gel properties characterization; characterization methods; extrusion technology (especially high-moisture extrusion); plant-based foods; quality improvement
(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 Kindness Alfred Uyanga
submission deadline 30 Nov 2025 | Viewed by 250 | 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 107 | 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 103 | 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 99 | 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)
Hydrogels for Bone Regeneration (2nd Edition)
edited by
submission deadline 30 Nov 2025 | Viewed by 28 | Submission Open
Keywords: hydrogels; polymer gels; bone; bone regeneration; bone tissue engineering; osteoblasts; osteoclasts
(This special issue belongs to the Section Gel Applications)
Cellulose-Based Hydrogels for Advanced Applications submission deadline 15 Dec 2025 | Viewed by 49 | Submission Open
Keywords: cellulose; hydrogels; wound dressing; tissue engineering; regenerative medicine; three-dimensional bioprinting; biosensors; cosmetics; environmental applications; food industry; energy storage
(This special issue belongs to the Section Gel Chemistry and Physics)
Innovative Gels: Structure, Properties, and Emerging Applications submission deadline 20 Dec 2025 | 2 articles | Viewed by 1365 | 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 | 1 articles | Viewed by 965 | 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 | 1 articles | Viewed by 580 | 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 | Viewed by 245 | 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 | Viewed by 51 | 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 8413 | 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)
Advanced Hydrogels for Tissue Engineering and Drug Delivery (2nd Edition)
edited by
submission deadline 31 Dec 2025 | 2 articles | Viewed by 12501 | Submission Open
Keywords: biomaterial; hydrogel; tissue engineering; smart drug delivery; biopolymers
(This special issue belongs to the Section Gel Applications)
Gels: 10th Anniversary submission deadline 31 Dec 2025 | 9 articles | Viewed by 8702 | 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)
Thixotropic Gels: Mechanisms, Functions and Applications submission deadline 31 Dec 2025 | 5 articles | Viewed by 8382 | Submission Open
Keywords: thixotropy; self-assembly; organogels; rheology; applications; 3D-printing gels
(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 3899 | 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)
Advanced Gels in the Food System
edited by Xiaokang Na, Wuchao Ma and
submission deadline 31 Dec 2025 | 2 articles | Viewed by 3086 | 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)
State-of-the Art Gel Research in USA submission deadline 31 Dec 2025 | 2 articles | Viewed by 3027 | Submission Open
Keywords: gels; chemistry; physics; characterization; processing; applications
(This special issue belongs to the Section Gel Chemistry and Physics)
Gel-Based Materials for Sensing and Monitoring
edited by
submission deadline 31 Dec 2025 | 2 articles | Viewed by 2590 | 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)
Conductive Gels: Preparation, Properties and Applications submission deadline 31 Dec 2025 | 1 articles | Viewed by 2172 | 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 1910 | 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)
Safety of Aerogel Materials
edited by and
submission deadline 31 Dec 2025 | 1 articles | Viewed by 1520 | 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)
Recent Advances in Biopolymer Gels (2nd Edition) submission deadline 31 Dec 2025 | 4 articles | Viewed by 1285 | 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)
Hydrogels with Appropriate/Tunable Properties for Biomedical Applications (3rd Edition)
edited by , and Feifei Sun
submission deadline 31 Dec 2025 | 2 articles | Viewed by 914 | Submission Open
Keywords: functional hydrogels; biomedical applications; adhesives; smart hydrogels; medical devices; health diagnosis
(This special issue belongs to the Section Gel Applications)
Aerogels: Promising Materials for Environmental Applications submission deadline 31 Dec 2025 | 1 articles | Viewed by 878 | Submission Open
Keywords: aerogels; bio-based aerogels; environmental applications; adsorption; wastewater; decontamination; heavy metals; rare and precious metals; pharmaceuticals; personal care products; persistent organic pollutants; CO2 sequestration; photocatalysis
(This special issue belongs to the Section Gel Processing and Engineering)
Polymer Gels for Oil Recovery and Industry Applications
edited by Yinbo He, , and Jingyang Pu
submission deadline 31 Dec 2025 | 1 articles | Viewed by 810 | 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)
Functional Hydrogels: Design, Processing and Biomedical Applications
edited by and
submission deadline 31 Dec 2025 | 1 articles | Viewed by 540 | 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)
Design, Characterization and Applications of Smart Hydrogels
edited by Zhen Zhang and
submission deadline 31 Dec 2025 | Viewed by 394 | Submission Open
Keywords: smart hydrogels; design; characterization; application; self-healing; stimuli-responsive materials; environmental sensitivity; drug delivery; tissue engineering; sensors; actuators; reversible volume change; shape adaptability
(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 | Viewed by 237 | 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)
Phase Transition and Behavior of Gels
edited by Mário Vale and
submission deadline 31 Dec 2025 | Viewed by 210 | Submission Open
Keywords: gels; phase seperation; environmental remediation; catalysis; semiconductors; advanced materials
(This special issue belongs to the Section Gel Analysis and Characterization)
Advanced Synthesis, Functionalization, and Applications of Lignin-Based Hydrogels
edited by Daochen Zhu
submission deadline 31 Dec 2025 | Viewed by 179 | Submission Open
Keywords: lignin hydrogels; functional biomaterials; structure– performance regulation; sustainable polymers; multifunctional applications
(This special issue belongs to the Section Gel Applications)
Recent Advances in Multi-Functional Polymer-Based Hydrogels submission deadline 31 Dec 2025 | Viewed by 173 | 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)
Recent Progress and Advances in Conductive or Smart Functional Polymer Gels
edited by Hyunchul Ahn and
submission deadline 31 Dec 2025 | Viewed by 121 | Submission Open
Keywords: conducive gel; functional gel; smart gel and composites; hydrogel; biomedical gel; energy application; gel synthesis and design; gel modeling and characterization; scaffold and structure
(This special issue belongs to the Section Gel Analysis and Characterization)
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