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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Composite Hydrogels: From Fundamental Research to Application
edited by , Hyeongmin Seo, Jingshun Zhuang and Lihong Lao
submission deadline 15 Aug 2025 | Viewed by 237 | Submission Open
Keywords: composite hydrogels; advanced hydrogel applications; sustainable polymer integration; functional hydrogels; biocompatibility; characterization
(This special issue belongs to the Section Gel Analysis and Characterization)
Biopolymer Gel-Assisted Synthesis of Particles for Biomedical Applications (2nd Edition) submission deadline 20 Aug 2025 | 10 articles | Viewed by 24590 | Submission Open
Keywords: biopolymer gels in synthesis of hierarchical and self-assembled structures; biopolymer hybrid particles for cell encapsulation and biofabrication; biopolymer hybrid particles for micropatterning and bio sensing in microfluidic devices; injectable biopolymer hybrid particles in biomedical applications; biopolymer hybrid particles for drug delivery; biopolymer hybrid particles in cosmetic; hygiene; and personal care products
(This special issue belongs to the Section Gel Applications)
Hydrogels, Oleogels and Bigels Used for Drug Delivery submission deadline 20 Aug 2025 | 6 articles | Viewed by 13181 | Submission Open
Keywords: hydrogels; oleogels; and bigels; semisolid pharmaceuticals and semisolid dispersions; pharmaceutical technology; industrial pharmaceutical processes; semisolid formulations development; topical and in situ gelling systems; gelled system formers and gel-forming polymers; pharmacotechnical analysis; semi-solid control diagram (SSCD); texture and consistency analysis; rheology and mathematical modeling; in vitro penetration tests; membrane permeation; and mathematical modeling; franz and diffusion cells; static permeation flux; and dynamic permeation flux; membranes; natural membranes; synthetic membranes; transdermal drug delivery; quality via the design of experiments
(This special issue belongs to the Section Gel Processing and Engineering)
Rheological Studies and Applications of Hydrogels Related to Drug Delivery submission deadline 20 Aug 2025 | 4 articles | Viewed by 13160 | Submission Open
Keywords: applications of hydrogels; hydrogels in drug delivery; rheology of hydrogels; role of rheology in drug delivery; properties of hydrogels
(This special issue belongs to the Section Gel Processing and Engineering)
Recent Developments in Food Gels (2nd Edition) submission deadline 20 Aug 2025 | 5 articles | Viewed by 8536 | Submission Open
Keywords: hydrogels (macrogels)/microgels/nanogels; oleogels/aerogels/lipogels/emulgels; multicomponent/mixed gels; food gel networks; natural biopolymers; stimuli-responsive food gels; herbal gels; self-assembled gels; food product development; food fortification; GIT uptake and release; natural product encapsulation and delivery
(This special issue belongs to the Section Gel Chemistry and Physics)
Food Gels: Structure and Function
edited by Longwei Jiang, , and Xiaoxia Yan
submission deadline 30 Aug 2025 | 8 articles | Viewed by 15706 | Submission Open
Keywords: food gels; polymers; polysaccharide; protein; structure; chemical and physicochemical characterization; film-forming properties; food quality; food non-destructive testing
(This special issue belongs to the Section Gel Applications)
Advances and Current Applications in Gel-Based Membranes
edited by Roxana Gabriela Zgârian and
submission deadline 30 Aug 2025 | 5 articles | Viewed by 11207 | Submission Open
Keywords: functional gel-based membranes; gel-based membranes with added extract plants for biomedical applications; gel-based membranes for environmental protection; delivery systems; water process technologies; water harvesting; biocompatibility; biodegradability
(This special issue belongs to the Section Gel Processing and Engineering)
Aerogels: Synthesis and Applications
edited by , , and Yajun Huang
submission deadline 30 Aug 2025 | 4 articles | Viewed by 6703 | Submission Open
Keywords: aerogel; preparation and application; modeling; simulation
(This special issue belongs to the Section Gel Applications)
Food Gel-Based Systems: Gel-Forming and Food Applications
edited by Buliyaminu Adegbemiro Alimi, Da Chen and
submission deadline 30 Aug 2025 | 4 articles | Viewed by 5227 | Submission Open
Keywords: novel food-derived gels; encapsulation and delivery of bioactive compounds using gels; bioaccessibility of bioactive compounds; gel-based packaging and edible coatings; structure; processing technologies
(This special issue belongs to the Section Gel Applications)
Towards Smart Gel Material for Flexible and Wearable Electronics
edited by Chuanqian Shi, Chengjun Wang and Ye Qiu
submission deadline 30 Aug 2025 | 1 articles | Viewed by 733 | Submission Open
Keywords: smart hydrogel; flexible electronics; wearable electronics; gel-based devices; gel synthesis and application
(This special issue belongs to the Section Gel Analysis and Characterization)
Advanced Hydrogels: Preparation, Property and Biomedical Application (2nd Edition)
edited by and
submission deadline 31 Aug 2025 | 7 articles | Viewed by 21311 | Submission Open
Keywords: zwitterionic hydrogels; nanogels; composite hydrogels; double network hydrogels; antifouling; wound healing; lubrication; mechanical properties; implants
(This special issue belongs to the Section Gel Processing and Engineering)
Advances in Stimulus-Responsive Hydrogels: Theory, Modern Advances, and Applications
edited by and Jakub Dostalek
submission deadline 31 Aug 2025 | 3 articles | Viewed by 14218 | Submission Open
Keywords: stimulus-responsive hydrogels; smart materials; hybrid materials; thermoresponsiveness; physical and chemical mechanisms; hydrogel fabrication; hydrogel application
(This special issue belongs to the Section Gel Processing and Engineering)
Food Gels: Fabrication, Characterization, and Application
edited by
submission deadline 31 Aug 2025 | 9 articles | Viewed by 13614 | 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 Applications)
Design, Fabrication, and Applications of Food Composite Gels
edited by Shima Momen and
submission deadline 31 Aug 2025 | 3 articles | Viewed by 11234 | Submission Open
Keywords: food texture; nutritional benefits; innovative food products; component interactions; hydrogel; protein functionality; plant protein; encapsulation; bioactive compounds; food engineering
(This special issue belongs to the Section Gel Processing and Engineering)
Advanced Soft Gels with Enhanced Functionality for Biomedical and Additive Manufacturing Applications submission deadline 31 Aug 2025 | 5 articles | Viewed by 11113 | Submission Open
Keywords: synthesis; characterisation; physiochemical properties; biodegradation; synthetic and natural polymers; biopolymers; physical and chemical crosslinking; composite gels; self-healing gels; cell culture; drug delivery; 3D printing and bioprinting; tissue engineering; hydrogels; microgels; nanogels
(This special issue belongs to the Section Gel Processing and Engineering)
Research Progress and Application Prospects of Gel Electrolytes submission deadline 31 Aug 2025 | 10 articles | Viewed by 10843 | Submission Open
Keywords: gel electrolytes; safer electrolytes; flexible electronics; environmentally friendly electrolytes; capacitors; batteries; conductive materials
(This special issue belongs to the Section Gel Chemistry and Physics)
Gels in the Oil Field
edited by Lei Zhang
submission deadline 31 Aug 2025 | 7 articles | Viewed by 8515 | Submission Open
Keywords: gel; oil field; exploration and development; CCUS; functional materials
(This special issue belongs to the Section Gel Chemistry and Physics)
Hydrogels, Microgels and Nanogels Emerging Platforms for Drug Delivery, Antibacterial Properties and Tissue Engineering
edited by Dimitrios Skoulas and
submission deadline 31 Aug 2025 | 3 articles | Viewed by 6613 | Submission Open
Keywords: hydrogels; microgels; nanogels; drug delivery; antibacterial properties; tissue engineering
(This special issue belongs to the Section Gel Chemistry and Physics)
Outcomes and Trends in Polymer Gels: Designing, Properties and Applications
edited by Noelia Maldonado Gavilán and
submission deadline 31 Aug 2025 | 5 articles | Viewed by 5209 | Submission Open
Keywords: polymeric networks; strengthened supramolecular interactions; novel crosslinkers; smart behavior; advanced manufacturing and characterization
(This special issue belongs to the Section Gel Processing and Engineering)
Recent Advances in Food Gels (2nd Edition) submission deadline 31 Aug 2025 | 6 articles | Viewed by 3684 | Submission Open
Keywords: biopolymers; chemical properties; food gel networks; food product development; gelation mechanism; hydrogels/microgels/nanogels; multicomponent/mixed gels; oleogels/aerogels/lipogels/emulgels; physical properties; polysaccharide gels; protein gels; rheology; sensory properties of food; texture
(This special issue belongs to the Section Gel Applications)
Engineering Advanced Hydrogels for Biomedical Applications (2nd Edition) submission deadline 31 Aug 2025 | 2 articles | Viewed by 2509 | Submission Open
Keywords: hydrogels; immunoregulation; multifunctional properties; polymers; nanocomposites; tissue regeneration; wound healing; bioprinting; drug delivery; cell culture
(This special issue belongs to the Section Gel Applications)
Nanogels and Microgels: Fundamental Studies, Applications, and Emerging Trends
edited by Guang Chen and Jiaxing Yuan
submission deadline 31 Aug 2025 | 2 articles | Viewed by 2452 | Submission Open
Keywords: volume phase transition; non-equilibrium swelling/collapse dynamics; stimuli responsive behaviors; drug delivery systems; soft actuators and robotics; biosensors; polymer network
(This special issue belongs to the Section Gel Chemistry and Physics)
Research on the Applications of Conductive Hydrogels
edited by , Ching-Wen Chang and
submission deadline 31 Aug 2025 | 1 articles | Viewed by 1357 | Submission Open
Keywords: conductive hydrogels; flexible electronics; bioelectronics; biosensors; tissue engineering; wearable devices; soft robotics; material design; biocompatibility; electrochemical properties
(This special issue belongs to the Section Gel Applications)
Polymer-Based Gels
edited by Antonio Veloso-Fernández and
submission deadline 31 Aug 2025 | 1 articles | Viewed by 1345 | Submission Open
Keywords: polymer gels; gel formation; smart materials; sustainable materials; biopolymers; polymer chemistry; gel synthesis
(This special issue belongs to the Section Gel Analysis and Characterization)
Recent Advances in Soft Gels in the Food Industry and Technology
edited by , , , Sérgio Cruz Sousa and
submission deadline 31 Aug 2025 | 1 articles | Viewed by 1192 | Submission Open
Keywords: soft gels; food texture; gelling agents; food industry applications; sustainable food technology; nutritional enhancement; flavor release systems; bioactive compound delivery; microstructure analysis; shelf-life extension
(This special issue belongs to the Section Gel Processing and Engineering)
Recent Advances in Gels for Pharmaceutical Application
edited by , and Daiva Majienė
submission deadline 31 Aug 2025 | 1 articles | Viewed by 661 | Submission Open
Keywords: gel; hydrogel; bigels; nanogel; microgel; gel-related formulation; encapsulation techniques; drug delivery; drug targeting
(This special issue belongs to the Section Gel Applications)
Recent Trends in Gels-Based Drug Delivery Systems
edited by and Yuta Koda
submission deadline 31 Aug 2025 | Viewed by 489 | Submission Open
Keywords: drug delivery system; biomaterials; hydrogels; designing network structures; stimuli-responsive; sensors; theranostics; biomacromolecule conjugation and encapsulation; injectable gels; sol– gel transition; liquid– liquid phase separation; biodegradable
(This special issue belongs to the Section Gel Applications)
Gel-Supported Catalysts for Sustainable Chemistry
edited by Maria H. L. Ribeiro
submission deadline 31 Aug 2025 | Viewed by 310 | Submission Open
Keywords: gels; hydrogels; enzymes; cells; biocatalysis; sustainable biocatalysis
(This special issue belongs to the Section Gel Applications)
Recent Advancements and Functional Applications of Aerogels
edited by and Qiaoran Zhang
submission deadline 31 Aug 2025 | Viewed by 199 | Submission Open
Keywords: aerogels; multifunctional applications; thermal insulation; stimuli-responsive; flame retardant; wearable aerogels
(This special issue belongs to the Section Gel Processing and Engineering)
Gel Biomaterials for Cancer Therapy and Biomedical Applications
edited by Natalie K. Livingston and Kimberly M. Stroka
submission deadline 31 Aug 2025 | Viewed by 180 | Submission Open
Keywords: gel biomaterials; hydrogels; cancer therapy; drug delivery systems; tumor microenvironment; immunotherapy; injectable gels
(This special issue belongs to the Section Gel Applications)
Polysaccharide-Based Gels
edited by Longxiang Zhu
submission deadline 31 Aug 2025 | Viewed by 170 | Submission Open
Keywords: polysaccharide; hydrogel; multi-functionalization; biomedicine; biodegradable; wearable sensors; packaging
(This special issue belongs to the Section Gel Chemistry and Physics)
New Trends in Chitosan-Based Hydrogels
edited by
submission deadline 31 Aug 2025 | Viewed by 147 | Submission Open
Keywords: chitosan hydrogels; green synthesis; biopolymer-based hydrogels; polymer crosslinking; biodegradable hydrogels; nanocomposites
(This special issue belongs to the Section Gel Applications)
Customizing Hydrogels: A Journey from Concept to End-Use Properties submission deadline 10 Sep 2025 | 6 articles | Viewed by 6606 | Submission Open
Keywords: natural/synthetic/hybrid hydrogels; chemical/physical hydrogels; “ smart” hydrogels; (nano)composite hydrogels; gelation mechanism; end-use properties
(This special issue belongs to the Section Gel Chemistry and Physics)
Advances in Hydrogels for Regenerative Medicine
edited by and Dongdong Zhou
submission deadline 10 Sep 2025 | 1 articles | Viewed by 2293 | Submission Open
Keywords: hydrogels; regenerative medicine; biomaterials; tissue engineering; drug delivery; 3D bioprinting; scaffold design; biocompatibility; stimuli-responsive hydrogels
(This special issue belongs to the Section Gel Processing and Engineering)
Advanced Metal Gels: Synthesis and Applications
edited by Yue Hu and
submission deadline 15 Sep 2025 | 2 articles | Viewed by 2324 | Submission Open
Keywords: aerogels; gels; metal aerogels; porous materials; nanostructures; catalysis; sensing; actuators; smart materials
(This special issue belongs to the Section Gel Processing and Engineering)
Recent Advances in Crosslinked Gels (2nd Edition)
edited by Qinguo Fan
submission deadline 20 Sep 2025 | 1 articles | Viewed by 2189 | Submission Open
Keywords: polymeric gels; crosslinked gels; supramolecular gels; synthesis of polymers; characterization of gels; smart gels; stimuli-responsive gels; applications; drug delivery; sensors; tissue engineering; adsorption
(This special issue belongs to the Section Gel Analysis and Characterization)
Gels for Biomedical Applications submission deadline 25 Sep 2025 | 7 articles | Viewed by 13196 | Submission Open
Keywords: gels; hydrogels; smart gels; in situ gels; biomedical applications; drug delivery; tissue engineering; wound healing
(This special issue belongs to the Section Gel Chemistry and Physics)
Eco-Friendly Gels for Adsorption
edited by and Valentin Popa
submission deadline 25 Sep 2025 | 6 articles | Viewed by 11005 | Submission Open
Keywords: gels/biogels/agrogels/hydrogels; adsorption; adsorbents/bioadsorbents; polymers; heavy metal ions; biocides; dye; pollutants; environmental science; wastewater remediation; wastewater treatment; renewable resources; biodegradable materials
(This special issue belongs to the Section Gel Processing and Engineering)
Composite Hydrogels for Biomedical Applications submission deadline 25 Sep 2025 | 5 articles | Viewed by 10264 | Submission Open
Keywords: hydrogels; drug delivery; composite hydrogels; gel characterization; biomedical application; wound healing; tissue engineering
(This special issue belongs to the Section Gel Chemistry and Physics)
Gel-Based Materials for Biomedical Engineering (2nd Edition)
edited by and
submission deadline 25 Sep 2025 | 2 articles | Viewed by 2588 | Submission Open
Keywords: biomaterials; hydrogels; injectable hydrogels; cryogels; tissue engineering; wound healing; drug delivery; heart failure
(This special issue belongs to the Section Gel Chemistry and Physics)
Recent Advances in Protein Gels submission deadline 30 Sep 2025 | 9 articles | Viewed by 21302 | Submission Open
Keywords: protein gels; hydrogels; biopolymers; synthesis and characterization; functional applications; waste management; circular economy
(This special issue belongs to the Section Gel Analysis and Characterization)
Advances in Cellulose-Based Hydrogels (3rd Edition) submission deadline 30 Sep 2025 | 10 articles | Viewed by 19859 | Submission Open
Keywords: cellulose; nanocellulose; cellulose derivatives; cellulose-based composites; hydrogels; design; characterization; applications
(This special issue belongs to the Section Gel Analysis and Characterization)
Designing Hydrogels for Sustained Delivery of Therapeutic Agents
edited by Jiajia Xiang
submission deadline 30 Sep 2025 | 5 articles | Viewed by 14045 | Submission Open
Keywords: hydrogel; nanogel; drug delivery; gene delivery; cancer therapy; tissue engineering; controlled release; regenerative medicine
(This special issue belongs to the Section Gel Applications)
Recent Progress and Development of Advanced Aerogels: Latest Processing Methods, Improved Properties and Application (2nd Edition)
edited by and
submission deadline 30 Sep 2025 | 4 articles | Viewed by 8873 | Submission Open
Keywords: aerogel; processing; properties; application
(This special issue belongs to the Section Gel Processing and Engineering)
Gel Materials for Heritage Conservation
edited by , Rosangela Mastrangelo and Damiano Bandelli
submission deadline 30 Sep 2025 | 3 articles | Viewed by 6600 | Submission Open
Keywords: advanced gel materials; hydrogels; organogels; eco-sustainable materials; gel analytical chemistry; cultural heritage preservation; cleaning; consolidation; and protection
(This special issue belongs to the Section Gel Applications)
Recent Advances in Microgels submission deadline 30 Sep 2025 | 3 articles | Viewed by 6530 | Submission Open
Keywords: thermoresponsive; stimuli-responsive; microgel; polymer; synthesis; branched structure; responsive material
(This special issue belongs to the Section Gel Applications)
Functional Gels Loaded with Natural Products
edited by Kristina Ramanauskienė
submission deadline 30 Sep 2025 | 5 articles | Viewed by 6363 | Submission Open
Keywords: natural compounds; antioxidant activity; biological activity; gelling agents; in vitro; rheology
(This special issue belongs to the Section Gel Processing and Engineering)
Wound Healing and Other Biomedical Applications of Novel Gel Formulations submission deadline 30 Sep 2025 | 4 articles | Viewed by 5805 | Submission Open
Keywords: gels; hydrogels; cryogels; topical gels; wound dressing; chronic wounds; tissue engineering; regenerative medicine; antimicrobial activity; anti-inflammatory; antiparasitic efficacy; cancer therapy; drug resistance; drug delivery
(This special issue belongs to the Section Gel Applications)
Advances and Application of Polymer Gels for Subsurface Energy and Storage
edited by and Jingyang Pu
submission deadline 30 Sep 2025 | 4 articles | Viewed by 5090 | Submission Open
Keywords: Novel polymer gel materials (e.g.; phase-change polymer gels; self-healing hydrogels; thermal-responsive polymer gels; salt-resistant polymer gels; sustainable and renewable polymer gels; etc.); ; Polymer gel applications in carbon capture; utilization; and storage; ; Factors impacting the effectiveness of polymer gel treatment; ; Characterization of polymer gel transport and plugging performance in porous media; ; Reservoir numerical/physical simulation of CO2 flooding; ; Machine learning applications in polymer gels projects.
(This special issue belongs to the Section Gel Applications)
Food Hydrogels: Synthesis, Characterization and Applications
edited by Esther Santamaría and González Azón Carme
submission deadline 30 Sep 2025 | 2 articles | Viewed by 5068 | Submission Open
Keywords: food hydrogels; natural biopolymers; controlled release nutrients; rheological characterization; texture modification; shelf life extension; functional food
(This special issue belongs to the Section Gel Chemistry and Physics)
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