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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Hydrogel for Sustained Delivery of Therapeutic Agents (2nd Edition) submission deadline 30 Jun 2025 | 11 articles | Viewed by 28103
Keywords: hydrogels; drug delivery; therapeutic agents; natural biopolymers; aerogels; polymer gels properties; biomedical applications; tissue engineering; smart hydrogels; stimuli-responsive gels; biomaterials; physical-chemical characterization; 3D printing; structure-property relationship; regenerative medicine
(This special issue belongs to the Section Gel Applications)
Advancements in Food Gelation: Exploring Mechanisms and Applications
edited by Zhouyi Xiong, , Qun Huang and
submission deadline 30 Jun 2025 | 9 articles | Viewed by 17672
Keywords: food gelation; gelation mechanisms; rheological properties; innovative techniques; functional ingredients; structure-function relationships
(This special issue belongs to the Section Gel Chemistry and Physics)
Aerogels—Preparation and Properties submission deadline 30 Jun 2025 | 11 articles | Viewed by 15776
Keywords: aerogels; aerogel composites; aerogel hybrids; nano-aerogels; supercritical drying; subcritical drying; optical properties; electrical properties; magnetic properties; mechanical properties
(This special issue belongs to the Section Gel Processing and Engineering)
Advances in Gel Films
edited by and Crina Anastasescu
submission deadline 30 Jun 2025 | 5 articles | Viewed by 11393
Keywords: gel films; sol-gel synthesis; film deposition; film characterization; film applications
(This special issue belongs to the Section Gel Processing and Engineering)
Applications of Gels in Energy Materials and Devices
edited by Mobinul Islam
submission deadline 30 Jun 2025 | 5 articles | Viewed by 11068
Keywords: polymer gel; gel precursor; hydrogels; gel membrane; solar cell; batteries; sol– gel method; energy devices; energy conversion; energy harvesting; supercapacitor; flexible batteries; H2O2 production
(This special issue belongs to the Section Gel Analysis and Characterization)
Designing Hydrogels and Hydrogel-Derived Materials for Agriculture and Water Sustainability
edited by , M. Melendrez-castro and
submission deadline 30 Jun 2025 | 7 articles | Viewed by 9812
Keywords: super absorbent; hydrogels; controlled release hydrogels in agriculture; hydrogels for contaminant removal; design and characterization of hydrogels; application of hydrogels for environmental sustainability; nanocomposite hydrogels; hybrid hydrogels; biobased hydrogels
(This special issue belongs to the Section Gel Applications)
Recent Research on Medical Hydrogels submission deadline 30 Jun 2025 | 6 articles | Viewed by 9672
Keywords: hydrogels; polymers; wound healing; tissue engineering; biomedical applications
(This special issue belongs to the Section Gel Applications)
Novel Polymer Gels: Synthesis, Properties, and Applications submission deadline 30 Jun 2025 | 6 articles | Viewed by 8735
Keywords: polymer gels; chemical and physical crosslinking; stimuli-responsive; self-healing; antimicrobial; drug delivery; tissue engineering; soft robotics; sensors; environmental
(This special issue belongs to the Section Gel Applications)
Structure and Properties of Functional Hydrogels (2nd Edition) submission deadline 30 Jun 2025 | 5 articles | Viewed by 8152
Keywords: functional hydrogels; hierarchical structure; multiscale structure; structure– property relationship; mechanical property
(This special issue belongs to the Section Gel Analysis and Characterization)
Gel-Related Materials: Challenges and Opportunities submission deadline 30 Jun 2025 | 9 articles | Viewed by 7346
Keywords: gels; organogels; hydrogels; chemical gels; gels made in mixtures; gels made in solvents; drug delivery; drug crystallization
(This special issue belongs to the Section Gel Applications)
Polysaccharide Gels: Application in Drug Delivery submission deadline 30 Jun 2025 | 2 articles | Viewed by 3328
Keywords: polysaccharides; drug delivery; biomaterials; encapsulation; controlled release; biocompatibility; biodegradability; targeted delivery; hydrogels; therapeutic agents; pharmaceutical applications
(This special issue belongs to the Section Gel Applications)
Properties and Structure of Hydrogel-Related Materials (2nd Edition)
edited by Wei Cui
submission deadline 30 Jun 2025 | 2 articles | Viewed by 2748
Keywords: gel and network; tough gel; gel rheology; gel adhesion; photonic crystal hydrogel sensor
(This special issue belongs to the Section Gel Applications)
Smart Hydrogel-Type Formulations: New Insights Regarding Design and Biomedical Applications
edited by , and Georgeta Coneac
submission deadline 30 Jun 2025 | 1 articles | Viewed by 1079
Keywords: hydrogels; gelling formulations; stimuli-responsive hydrogels; magnetic hydrogels; light-cured hydrogels; metallic hydrogels; manufacturing process (design); physicochemical features; mechanical properties; biological activity; cancer therapy; drug delivery platforms; drug integration; materials encapsulation; drug release kinetics
(This special issue belongs to the Section Gel Analysis and Characterization)
Food Gels: Gelling Process and New Applications
edited by Xin Du and
submission deadline 30 Jun 2025 | 1 articles | Viewed by 1009
Keywords: muscle food; biopolymers; protein; gelation properties; development of novel food gels
(This special issue belongs to the Section Gel Applications)
Novel Gels for Biomedical Applications
edited by Amrita Pal and Sung-Hyuk Sunwoo
submission deadline 30 Jun 2025 | 1 articles | Viewed by 979
Keywords: biohybrid hydrogels; smart gels; natural and synthetic biomaterial; drug delivery; endovascular embolization; therapeutic neovascularization
(This special issue belongs to the Section Gel Chemistry and Physics)
Molecular Dynamics Simulations and Modelling on Gels
edited by Jingxuan Ding, Qing Huang and Tingzheng Hou
submission deadline 30 Jun 2025 | Viewed by 150
Keywords: molecular dynamics; coarse-grained MD; machine learning; cross-linked gels; microstructure; mechanical properties; swelling and thermal behavior; polymer electrolytes; biomedical; drug delivery
(This special issue belongs to the Section Gel Processing and Engineering)
Advances in Functional Gel (2nd Edition) submission deadline 10 Jul 2025 | 7 articles | Viewed by 12872 | Submission Open
Keywords: smart gel systems; nanohybrid gels; nanocomposite gels; innovative advanced gels; bio-based gel materials; sol– gel technique; functional gel coatings
(This special issue belongs to the Section Gel Chemistry and Physics)
Cellulose Gels: Properties and Prospective Applications
edited by Xiaopeng Peng
submission deadline 10 Jul 2025 | 3 articles | Viewed by 1977 | Submission Open
Keywords: hydrogels; nanocellulose; cellulose nanocrystals; nanofibrillated cellulose; bacterial nanocellulose; biodegradable; biocompatible
(This special issue belongs to the Section Gel Analysis and Characterization)
Designing Gels for Catalysts submission deadline 20 Jul 2025 | 7 articles | Viewed by 15472 | Submission Open
Keywords: photocatalysis; hydrogel-based photocatalyst; gel design
(This special issue belongs to the Section Gel Applications)
Gel Formation Processes and Materials for Functional Thin Films
edited by Denitsa K. Elenkova, and
submission deadline 20 Jul 2025 | 3 articles | Viewed by 1710 | Submission Open
Keywords: sol– gel method; gels; thin films; deep coating; spin coating; film applications; membranes
(This special issue belongs to the Section Gel Processing and Engineering)
Hybrid Hydrogels: From Biomaterials Development to Eco-Friendly Approaches
edited by Gabriela Craciun, , and
submission deadline 20 Jul 2025 | 1 articles | Viewed by 1208 | Submission Open
Keywords: hydrogels; hybrid polymers; natural and synthetic polymers; advanced and smart hydrogels; radiation crosslinking; biocompatibility  ; swelling and biodegradation kinetics  ; innovative techniques  ; drug or fertilizer release
(This special issue belongs to the Section Gel Analysis and Characterization)
Recent Advances in Gels Engineering for Drug Delivery (2nd Edition) submission deadline 30 Jul 2025 | 10 articles | Viewed by 14392 | Submission Open
Keywords: gels and nanogels; drug delivery; biomedical applications; topical administration; oral administration; parenteral administration; stimuli-responsive gels
(This special issue belongs to the Section Gel Applications)
Chemical Properties and Application of Gel Materials
edited by Jiahui Liu, and Xiaolong Zeng
submission deadline 30 Jul 2025 | 9 articles | Viewed by 11627 | Submission Open
Keywords: soft materials; gel materials; synthesis and characterization; structure– property relationships
(This special issue belongs to the Section Gel Processing and Engineering)
Advanced Hydrogels for Biomedical Applications
edited by
submission deadline 30 Jul 2025 | 4 articles | Viewed by 1941 | Submission Open
Keywords: hydrogels; drug delivery; tissue engineering; bioimaging; sensing and diagnostics
(This special issue belongs to the Section Gel Applications)
Hydrogel for Tissue Engineering and Biomedical Therapeutics
edited by
submission deadline 31 Jul 2025 | 7 articles | Viewed by 13349 | Submission Open
Keywords: hydrogel; tissue engineering; biomedical therapeutics; biomimetic scaffolds; drug delivery; regenerative medicine; cell-material interactions
(This special issue belongs to the Section Gel Applications)
Gel-Based Adsorbent Materials for Environmental Remediation
edited by and Abdalla H. Karoyo
submission deadline 31 Jul 2025 | 5 articles | Viewed by 9957 | Submission Open
Keywords: gels; environmental remediation; adsorbent; adsorption; crosslinking; smart materials; structure– function; water harvesting
(This special issue belongs to the Section Gel Processing and Engineering)
Recent Research on Alginate Hydrogels in Bioengineering Applications submission deadline 31 Jul 2025 | 6 articles | Viewed by 9889 | 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)
State-of-the-Art Gel Research in China
edited by Ziguang Zhao, Weipeng Chen and
submission deadline 31 Jul 2025 | 6 articles | Viewed by 9883 | Submission Open
Keywords: gels; soft materials; hydrogel; aerogel; xerogel; cryogel; microgel; nanogel; lipogel; emulgel; ionogel; metallogel; food gel; bigel; mechanical performance; smart features; interdisciplinary applications; etc.
(This special issue belongs to the Section Gel Applications)
Recent Trends in Gels for 3D Printing submission deadline 31 Jul 2025 | 3 articles | Viewed by 6880 | Submission Open
Keywords: gels; hydrogels; bioresponsive hydrogels; 3d printing; additive manufacturing; processing of hydrogels; material properties; applications
(This special issue belongs to the Section Gel Analysis and Characterization)
Gels for Oil and Gas Industry Applications (3rd Edition)
edited by , and
submission deadline 31 Jul 2025 | 9 articles | Viewed by 6810 | Submission Open
Keywords: the development of novel gels; the conformance control of gels; the fracturing of gels; the chemical EOR of gels; the field application of gels
(This special issue belongs to the Section Gel Applications)
High-Performance Hydrogel
edited by
submission deadline 31 Jul 2025 | 2 articles | Viewed by 3563 | Submission Open
Keywords: mechanical robustness; responsive characteristics; exceptional absorption; tailored designs; biomedical applications; environmental applications
(This special issue belongs to the Section Gel Chemistry and Physics)
Advances in Functional Hydrogels and Their Applications
edited by Peng Zhao
submission deadline 31 Jul 2025 | 2 articles | Viewed by 3554 | Submission Open
Keywords: hydrogels; biomaterials; biopolymers; stimuli response; smart hydrogels; drug delivery; 3D printing; tissue engineering; tissue regeneration
(This special issue belongs to the Section Gel Processing and Engineering)
Advances in Protein Gels and Their Applications
edited by Qi Han and Junhua Li
submission deadline 31 Jul 2025 | 3 articles | Viewed by 2751 | Submission Open
Keywords: protein gels; protein structure; protein aggregation; hydrogels; gelling properties
(This special issue belongs to the Section Gel Applications)
Smart Hydrogels in Engineering and Biomedical Applications
edited by and
submission deadline 31 Jul 2025 | 1 articles | Viewed by 1209 | Submission Open
Keywords: hydrogels; lubrication; biotribology; articular joint; water-based lubricants; composite lubricants
(This special issue belongs to the Section Gel Applications)
Application of Hydrogels in Adsorption of Pollutants in Water and Wastewater Treatment submission deadline 31 Jul 2025 | 1 articles | Viewed by 1016 | Submission Open
Keywords: water and wastewater treatment; effective adsorption; pollutant removal; nanomaterials; three-dimensional polymer networks; heavy metals; organic dyes; and pharmaceuticals; specific contaminants
(This special issue belongs to the Section Gel Applications)
Biopolymer-Based Gels for Drug Delivery and Tissue Engineering (2nd Edition) submission deadline 31 Jul 2025 | 3 articles | Viewed by 987 | Submission Open
Keywords: polysaccharides; proteins; biopolymers; gel development; gel evaluation; formulation optimization; gels in cancer therapy; tissue engineering
(This special issue belongs to the Section Gel Applications)
Hydrogels for Cartilage Tissue Engineering and Mechanobiology
edited by , Rocío Castro-Viñuelas and Veerle Bloemen
submission deadline 31 Jul 2025 | Viewed by 414 | Submission Open
Keywords: hydrogels; tissue engineering; cartilage; biocompatibility; mechanobiology; mechanical properties; scaffolds
(This special issue belongs to the Section Gel Analysis and Characterization)
Antimicrobial Gels and Related Process Technologies
edited by
submission deadline 31 Jul 2025 | Viewed by 261 | Submission Open
Keywords: antimicrobial gel materials; coatings; functional materials; sol–gel technology; gel processes
(This special issue belongs to the Section Gel Processing and Engineering)
Rational Design and Applications of Hydrogels in Regenerative Medicine
edited by Diego Trucco and
submission deadline 31 Jul 2025 | Viewed by 202 | Submission Open
Keywords: advanced biomaterials; hydrogel design; hydrogel functionalization; hydrogel characterization; tissue regeneration; tissue substitution; in vitro models; regenerative medicine
(This special issue belongs to the Section Gel Applications)
Functional Gels Applied in Energy Storage Systems
edited by Xiaojiang Mu and Lina Ma
submission deadline 31 Jul 2025 | Viewed by 188 | Submission Open
Keywords: solar interfacial evaporation; hydrogel; aerogel; photothermal conversion; lithium battery; radiation cooling; thermoelectric conversion
(This special issue belongs to the Section Gel Applications)
Plant-Based Gels for Food Applications submission deadline 31 Jul 2025 | Viewed by 147 | Submission Open
Keywords: alternative proteins; hydrogels; oleogels; bigels; food structure
(This special issue belongs to the Section Gel Applications)
Composite Hydrogels: From Fundamental Research to Application
edited by , Hyeongmin Seo, Jingshun Zhuang and Lihong Lao
submission deadline 15 Aug 2025 | Viewed by 216 | 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 | 9 articles | Viewed by 22818 | 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)
Rheological Studies and Applications of Hydrogels Related to Drug Delivery submission deadline 20 Aug 2025 | 4 articles | Viewed by 12090 | 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)
Hydrogels, Oleogels and Bigels Used for Drug Delivery submission deadline 20 Aug 2025 | 6 articles | Viewed by 11918 | 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)
Recent Developments in Food Gels (2nd Edition) submission deadline 20 Aug 2025 | 5 articles | Viewed by 7867 | 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 | 7 articles | Viewed by 14070 | 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 | 4 articles | Viewed by 10550 | 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 6181 | 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 | 3 articles | Viewed by 4320 | 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)
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