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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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Food Gels: Structure and Function

edited by Longwei Jiang,

Qian Liu

Lili Ren

and Xiaoxia Yan

submission deadline 30 Aug 2025 | 8 articles | Viewed by 16871 | 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

Graţiela Teodora Tihan

submission deadline 30 Aug 2025 | 5 articles | Viewed by 11492 | 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

Song He

Zhi Li

Yuelei Pan

and Yajun Huang

submission deadline 30 Aug 2025 | 4 articles | Viewed by 6948 | 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

Ana Bucić-Kojić

submission deadline 30 Aug 2025 | 5 articles | Viewed by 5865 | 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 820 | 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

Weifeng Lin

and

Longgang Wang

submission deadline 31 Aug 2025 | 7 articles | Viewed by 22514 | 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)

Food Gels: Fabrication, Characterization, and Application

edited by

Hao Cheng

submission deadline 31 Aug 2025 | 9 articles | Viewed by 17396 | 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)

Advances in Stimulus-Responsive Hydrogels: Theory, Modern Advances, and Applications

edited by

Yevhenii M. Morozov

and Jakub Dostalek

submission deadline 31 Aug 2025 | 3 articles | Viewed by 15982 | 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)

Advanced Soft Gels with Enhanced Functionality for Biomedical and Additive Manufacturing Applications

edited by

Ing Kong

and

Akesh Babu Kakarla

submission deadline 31 Aug 2025 | 5 articles | Viewed by 12204 | 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

edited by

Ana Isabel Ribeiro

and

Andrea Zille

submission deadline 31 Aug 2025 | 10 articles | Viewed by 11920 | 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)

Design, Fabrication, and Applications of Food Composite Gels

edited by Shima Momen and

Mahsa Majzoobi

submission deadline 31 Aug 2025 | 3 articles | Viewed by 11887 | 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)

Gels in the Oil Field

edited by Lei Zhang

submission deadline 31 Aug 2025 | 7 articles | Viewed by 8927 | Submission Open

Keywords: gel; oil field; exploration and development; CCUS; functional materials

(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

Georgios Bokias

submission deadline 31 Aug 2025 | 5 articles | Viewed by 5577 | 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)

edited by

Przemyslaw Siejak

and

Krzysztof Polewski

submission deadline 31 Aug 2025 | 6 articles | Viewed by 4219 | 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)

edited by

Bae Hoon Lee

and

Nabila Mehwish

submission deadline 31 Aug 2025 | 2 articles | Viewed by 2716 | 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)

Polymer-Based Gels

edited by Antonio Veloso-Fernández and

Bogdan-Marian Tofanica

submission deadline 31 Aug 2025 | 1 articles | Viewed by 2009 | 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 Trends in Gels-Based Drug Delivery Systems

edited by

Akira Matsumoto

and Yuta Koda

submission deadline 31 Aug 2025 | Viewed by 498 | 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)

Polysaccharide-Based Gels

edited by Longxiang Zhu

submission deadline 31 Aug 2025 | 1 articles | Viewed by 414 | Submission Open

Keywords: polysaccharide; hydrogel; multi-functionalization; biomedicine; biodegradable; wearable sensors; packaging

(This special issue belongs to the Section Gel Chemistry and Physics)

Gel-Supported Catalysts for Sustainable Chemistry

edited by Maria H. L. Ribeiro

submission deadline 31 Aug 2025 | Viewed by 316 | Submission Open

Keywords: gels; hydrogels; enzymes; cells; biocatalysis; sustainable biocatalysis

(This special issue belongs to the Section Gel Applications)

Gel Biomaterials for Cancer Therapy and Biomedical Applications

edited by Natalie K. Livingston and Kimberly M. Stroka

submission deadline 31 Aug 2025 | Viewed by 187 | 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)

New Trends in Chitosan-Based Hydrogels

edited by

Lahoucine Bahsis

submission deadline 31 Aug 2025 | Viewed by 164 | 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

edited by

Andra-Cristina Enache

Corneliu Cojocaru

and

Petrisor Samoila

submission deadline 10 Sep 2025 | 6 articles | Viewed by 7304 | 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

Martina Lenzuni

and Dongdong Zhou

submission deadline 10 Sep 2025 | 4 articles | Viewed by 3852 | 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

Ran Du

submission deadline 15 Sep 2025 | 2 articles | Viewed by 2458 | 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 | 2 articles | Viewed by 2474 | 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

edited by

Joaquim Suñer-Carbó

and

Helena Colom-Codina

submission deadline 25 Sep 2025 | 7 articles | Viewed by 14085 | 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

Elena Ungureanu

and Valentin Popa

submission deadline 25 Sep 2025 | 6 articles | Viewed by 11556 | 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

edited by

Marta Slavkova

and

Marieta Constantin

submission deadline 25 Sep 2025 | 5 articles | Viewed by 10661 | 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

Jieyu Zhang

and

Daihua Fu

submission deadline 25 Sep 2025 | 2 articles | Viewed by 2952 | 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

edited by

Maria Stanca

and

Katarzyna Ławińska

submission deadline 30 Sep 2025 | 9 articles | Viewed by 22638 | 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)

edited by

Lorenzo Bonetti

Laura Riva

and

Christian Demitri

submission deadline 30 Sep 2025 | 10 articles | Viewed by 20849 | 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 14573 | 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

Mingze Sun

and

Tobias Abt

submission deadline 30 Sep 2025 | 4 articles | Viewed by 9167 | Submission Open

Keywords: aerogel; processing; properties; application

(This special issue belongs to the Section Gel Processing and Engineering)

Recent Advances in Microgels

edited by

Paula Isabel Soares

submission deadline 30 Sep 2025 | 3 articles | Viewed by 7097 | Submission Open

Keywords: thermoresponsive; stimuli-responsive; microgel; polymer; synthesis; branched structure; responsive material

(This special issue belongs to the Section Gel Applications)

Gel Materials for Heritage Conservation

edited by

Emiliano Carretti

, Rosangela Mastrangelo and Damiano Bandelli

submission deadline 30 Sep 2025 | 3 articles | Viewed by 6986 | 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)

Functional Gels Loaded with Natural Products

edited by Kristina Ramanauskienė

submission deadline 30 Sep 2025 | 5 articles | Viewed by 6866 | 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

edited by

Sibusiso Alven

and

Blessing Atim Aderibigbe

submission deadline 30 Sep 2025 | 4 articles | Viewed by 6314 | 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)

Rheological Properties and Applications of Gel-Based Materials

edited by Jungbin Ahn and

Rama Bansil

submission deadline 30 Sep 2025 | 5 articles | Viewed by 5461 | Submission Open

Keywords: gel-based materials; rheological analysis; nanocomposite

(This special issue belongs to the Section Gel Processing and Engineering)

Food Hydrogels: Synthesis, Characterization and Applications

edited by Esther Santamaría and González Azón Carme

submission deadline 30 Sep 2025 | 2 articles | Viewed by 5249 | 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)

Gels for Flexible Electronics and Energy Devices (2nd Edition)

edited by

Yi-Zhou Zhang

and

Wen-Yong Lai

submission deadline 30 Sep 2025 | 4 articles | Viewed by 4775 | Submission Open

Keywords: hydrogels; flexible sensors; strain/pressure sensors; gel electrolytes; flexible batteries; flexible supercapacitors; energy harvesting

(This special issue belongs to the Section Gel Applications)

Synthesis, Characterization and Applications of Collagen-Based Gels

edited by

Andreea-Mariana Negrescu

and

Anişoara Cîmpean

submission deadline 30 Sep 2025 | 3 articles | Viewed by 4743 | Submission Open

Keywords: collagen-based gels; soft materials; mechanical properties; functional applications; tissue engineering; regenerative medicine; drug delivery

(This special issue belongs to the Section Gel Processing and Engineering)

Advances in Synthetic and Bio-Based Aerogels: Mechanical Properties, Thermal Insulation, and Environmental Remediation (2nd Edition)

edited by

Beatriz Merillas

and

Luísa Durães

submission deadline 30 Sep 2025 | 3 articles | Viewed by 3704 | Submission Open

Keywords: aerogels; thermal insulation; mechanical properties; porous structure; environmental remediation

(This special issue belongs to the Section Gel Processing and Engineering)

Advancing Green Chemistry in Hydrogel Development: Design, Synthesis, and Characterization

edited by

Pietro Matricardi

and

Njomza Ajvazi

submission deadline 30 Sep 2025 | 2 articles | Viewed by 3220 | Submission Open

Keywords: hydrogels; biomolecules; natural polymers; biocompatibility; biodegradability; green chemistry

(This special issue belongs to the Section Gel Chemistry and Physics)

Food Gels: Structure and Properties (2nd Edition)

edited by

Hongjie Dai

submission deadline 30 Sep 2025 | 2 articles | Viewed by 2820 | Submission Open

Keywords: biopolymer; gel; hydrogel; structure; emulsion; food application; 3D printing; interaction

(This special issue belongs to the Section Gel Applications)

Electroactive Hydrogels: Application in Soft Actuators and Flexible Devices

edited by

Fatemeh Mokhtari

Bahareh Azimi

and Russell Varley

submission deadline 30 Sep 2025 | 2 articles | Viewed by 2298 | Submission Open

Keywords: dynamic hydrogel; electro-responsive hydrogel; injectable hydrogel electrode; conductive nanomicelle hydrogel; electroconductive hydrogel; wearable bioelectronic devices

(This special issue belongs to the Section Gel Analysis and Characterization)

Biobased Gels for Drugs and Cells

edited by Resmi Anand and

David Duday

submission deadline 30 Sep 2025 | 2 articles | Viewed by 1728 | Submission Open

Keywords: biobased gel; drug delivery; cell encapsulation; biomaterials; cell– biomaterial interactions; chitosan; gelatin; alginate; lignin; cellulose

(This special issue belongs to the Section Gel Applications)

Advances in Composite Gels (3rd Edition)

edited by

Shinya Inazumi

submission deadline 30 Sep 2025 | 2 articles | Viewed by 1569 | Submission Open

Keywords: nanocomposite hydrogels; bio-based composite hydrogels; organic– inorganic composite hydrogels

(This special issue belongs to the Section Gel Processing and Engineering)

Recent Advances in Hydrogel Materials

edited by

Siyuan Chen

and

Akira Matsumoto

submission deadline 30 Sep 2025 | 1 articles | Viewed by 1439 | Submission Open

Keywords: hydrogels; polymers; gel synthesis; characterization; interdisciplinary applications

(This special issue belongs to the Section Gel Analysis and Characterization)

Smart Gels for Sensing Devices and Flexible Electronics

edited by Junjie Qin,

Hailei Zhang

and

Zhongyu Cai

submission deadline 30 Sep 2025 | 2 articles | Viewed by 1430 | Submission Open

Keywords: hydrogels; organogels; responsive polymers; smart materials; intelligent materials; nanomaterials; biomaterials; actuators; chemical sensors; biosensors; wearable devices; soft robotics

(This special issue belongs to the Section Gel Applications)

Polymer Gels for Sensor Applications

edited by

Rui P. C. L. Sousa

Bjørn Torger Stokke

and Francis Vocanson

submission deadline 30 Sep 2025 | 2 articles | Viewed by 1420 | Submission Open

Keywords: polymer gels; sensing; monitoring; smart materials; functional gels; environmental sensors; optical sensors; electrochemical sensors; hydrogel sensors; sol-gel sensors

(This special issue belongs to the Section Gel Processing and Engineering)

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