Special Issues

Crystals 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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Synthesis and Characterization of Oxide Nanoparticles submission deadline 15 Sep 2025 | 4 articles | Viewed by 8132 | Submission Open
Keywords: oxide nanoparticles elaboration; emerging nanostructured materials; morphostructural characterization of nanoparticles; optical applications of nanoparticles; nanostructured thin films; antibacterial properties
(This special issue belongs to the Section Inorganic Crystalline Materials)
Hybrid Organic–Inorganic Materials Used to Improve the Environment and Human Health (2nd Edition) submission deadline 15 Sep 2025 | 3 articles | Viewed by 5981 | Submission Open
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
New Insights into Optical Crystals: From Fundamentals to Materials Performance
edited by Conggang Li and
submission deadline 15 Sep 2025 | 1 articles | Viewed by 1089 | Submission Open
Keywords: material design; optical crystals; synthesis methods; crystal growth; optical properties; structure– properties relationship
(This special issue belongs to the Section Materials for Energy Applications)
Synthesis, Characterizations and Applications of Atomically Precise Nanomaterials
edited by and Longlong Geng
submission deadline 15 Sep 2025 | Viewed by 389 | Submission Open
Keywords: nanoclusters; nanostructures; catalysis; single crystal X-ray diffraction; crystal growth
(This special issue belongs to the Section Crystal Engineering)
Applications and Innovations in Electroceramics submission deadline 15 Sep 2025 | Viewed by 304 | Submission Open
Keywords: ceramic materials; dielectric properties; solid state reaction; complex impedance spectroscopy; numerical simulation; composites; luminescence properties
(This special issue belongs to the Section Polycrystalline Ceramics)
Research Progress of Eutectic Alloys
edited by and Chuanqiang Li
submission deadline 15 Sep 2025 | Viewed by 232 | Submission Open
Keywords: eutectic alloys; microstructure; alloy design; solidification mechanism; mechanical properties
(This special issue belongs to the Section Crystalline Metals and Alloys)
Advanced Research in 2D Materials
edited by and
submission deadline 20 Sep 2025 | 3 articles | Viewed by 5483 | Submission Open
Keywords: synthesis and fabrication of 2D materials; characterization and properties of 2D materials; applications involving 2D materials; theories involving 2D materials; machine learning involving 2D materials
(This special issue belongs to the Section Inorganic Crystalline Materials)
Catalysts and Modeling of Ammonia Synthesis Catalytic Reactions
edited by Constantinos D. Zeinalipour-Yazdi
submission deadline 20 Sep 2025 | 2 articles | Viewed by 4993 | Submission Open
Keywords: ammonia synthesis; mechanism; DFT; screening; catalysis
(This special issue belongs to the Section Inorganic Crystalline Materials)
Porous Ceramics and Their Composite Materials
edited by , and Xinxin Jin
submission deadline 20 Sep 2025 | 1 articles | Viewed by 3148 | Submission Open
Keywords: porous ceramics and composites; lightweight ceramics; porous geopolymer; ceramics for water purification; 3D-printed porous ceramics; sustainable ceramics derived from solid wastes; glass ceramic foams
(This special issue belongs to the Section Polycrystalline Ceramics)
Microstructure Evolution and Mechanical Properties of Steels
edited by and
submission deadline 20 Sep 2025 | 2 articles | Viewed by 2910 | Submission Open
Keywords: steel; microstructure; materials characterization; mechanical Properties; additive manufacturing; welding; casting; numerical simulation
(This special issue belongs to the Section Crystalline Metals and Alloys)
Materials for Applications in Water Splitting and Battery
edited by Xiaoyong Yang and Weiwei Pang
submission deadline 20 Sep 2025 | 1 articles | Viewed by 1590 | Submission Open
Keywords: low-dimensional materials; nanocrystals; nanocage; sustainable materials; emerging functional nanomaterials; heterostructures; energy storage and conversion; battery research; electrode– electrolyte interfaces; high-energy electrode materials; material design; photoelectrochemical water splitting
(This special issue belongs to the Section Materials for Energy Applications)
Fatigue and Fracture of Welded Structures
edited by Zheng Liu, Hang Liang and
submission deadline 20 Sep 2025 | 1 articles | Viewed by 960 | Submission Open
Keywords: welding technology; welding evaluation; fracture mechanics; fatigue crack propagation; fatigue; fracture toughness test; size effect; failure analysis; fatigue damage mechanism; digital image correlation method; stress– strain response; structural engineering; finite element analysis; engineering metallic materials; deformation analysis; multiscale simulation; microscopic characterization; life prediction
(This special issue belongs to the Section Crystalline Metals and Alloys)
Structure and Elemental Variations in Metals submission deadline 20 Sep 2025 | 1 articles | Viewed by 636 | Submission Open
Keywords: metal; element; EDS; distribution; microstructure
(This special issue belongs to the Section Crystalline Metals and Alloys)
Thermal and Thermo-Oxidative Decomposition of Polymers and Polymer Blends
edited by
submission deadline 20 Sep 2025 | Viewed by 243 | Submission Open
Keywords: polymers; polymer blends; thermal properties; decomposition
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Raman Laser Technology of Crystals
edited by and Haiyong Zhu
submission deadline 20 Sep 2025 | Viewed by 194 | Submission Open
Keywords: Raman crystals; crystalline Raman laser; Raman effect; Raman spectroscopy; Raman generator; material characterization; crystalline Raman materials; second-harmonic generation or sum-frequency generation of crystalline Raman laser
(This special issue belongs to the Section Inorganic Crystalline Materials)
Magnetic Shape-Memory Alloys: An Exploration of the Correlation Between Microstructure and Macroscopic Properties
edited by Zhenni Zhou, Yuhai Qu and
submission deadline 20 Sep 2025 | Viewed by 132 | Submission Open
Keywords: Ni-Mn-based alloys; dynamic phase transition mechanisms; magneto-elastic coupling; multi-field coupling effects; composition sensitivity; interface engineering; cross-scale characterization; intelligent driving materials
(This special issue belongs to the Section Crystalline Metals and Alloys)
Microstructure and Mechanical Properties of Alloys and Composites
edited by Qingchun Zhu and
submission deadline 22 Sep 2025 | 3 articles | Viewed by 1280 | Submission Open
Keywords: mechanical properties; microstructure; alloying elements; alloys; composite materials
(This special issue belongs to the Section Crystalline Metals and Alloys)
Preparation and Characterization of Precipitates in Magnesium Alloys
edited by Yangxin Li
submission deadline 25 Sep 2025 | 1 articles | Viewed by 1082 | Submission Open
Keywords: magnesium alloys; precipitates; morphology; crystallography; advanced characterization; properties
(This special issue belongs to the Section Crystalline Metals and Alloys)
Advanced Technologies for Protein Crystal Optimization and Delivery of Protein Crystals
edited by and Hévila Brognaro
submission deadline 25 Sep 2025 | Viewed by 491 | Submission Open
Keywords: distinct crystals growth; in-vivo crystallization; crystal nucleation and liquid dense protein clusters; crystal growth for neutron diffraction; external electrical and magnetic fields; microgravity crystallization; mass transport in crystallization; in situ analysis of crystals; in situ optimization of crystals; physicochemical characterization of crystals; scoring crystal suspensions; instrument and software development; crystal delivery for XFEL and synchrotron radiation sources
(This special issue belongs to the Section Biomolecular Crystals)
Synthesis of Lithium Metal Battery Materials
edited by Yuanjian Li
submission deadline 26 Sep 2025 | Viewed by 136 | Submission Open
Keywords: lithium metal batteries; lithium composite electrodes; lithium alloy anodes; functional separators; solid-state electrolytes; battery material synthesis
Crystallography of Enzymes
edited by and
submission deadline 30 Sep 2025 | 9 articles | Viewed by 14051 | Submission Open
Keywords: enzyme; structure; function; X-ray crystallography; crystal; crystallization; catalytic mechanism; antagonist
(This special issue belongs to the Section Biomolecular Crystals)
Structure and Properties of Ceramic Materials
edited by Andrzej Kruk and Dorota Sitko
submission deadline 30 Sep 2025 | 5 articles | Viewed by 6620 | Submission Open
Keywords: magnetooptical properties; density; microstructure; luminescence; spectroscopy
(This special issue belongs to the Section Polycrystalline Ceramics)
Special Issue of the Professional Committee of Key Materials and Technology for Electronic Components (PC-KMTEC)
edited by Feng Shi, , , Guangzu Zhang, and
submission deadline 30 Sep 2025 | 2 articles | Viewed by 4770 | Submission Open
Keywords: microwave dielectric ceramics; ferroelectric ceramics; piezoelectric ceramics; thermoelectric ceramics; pyroelectric ceramics; sensitive ceramics; transparent ceramics
(This special issue belongs to the Section Polycrystalline Ceramics)
Advances in New Functional Biomaterials for Medical Applications, Second Edition submission deadline 30 Sep 2025 | 2 articles | Viewed by 3511 | Submission Open
Keywords: new biomaterials; characterization; metallic biomaterials; bio interactive; resorbable biomaterials; controlled reactions
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
State-of-the-Art Liquid Crystals Research in Japan (2nd Edition) submission deadline 30 Sep 2025 | 1 articles | Viewed by 1975 | Submission Open
Keywords: liquid crystals; blue phase; stimulus responsiveness; photoalignment control; molecular dynamics simulations; rheology; X-ray diffraction; luminescence; electrical conductivity
(This special issue belongs to the Section Liquid Crystals)
Advanced Surface Modifications on Materials (2nd Edition)
edited by , and Rasoul Khandan
submission deadline 30 Sep 2025 | 1 articles | Viewed by 853 | Submission Open
Keywords: surface modifications; advanced surface techniques; materials surface engineering; surface properties; laser surface modification; laser surface coating
High-Tech Metals—Overview, Microstructure, Properties and Recyclability (2nd Edition) submission deadline 30 Sep 2025 | Viewed by 458 | Submission Open
Keywords: high-tech metals; microstructure; properties; material characterization; winning; recyclability
Advances in New Composite Insulating Materials: Crystal Structure, Properties, and Applications
edited by Mojia Huang, Zhiwen Lan and
submission deadline 30 Sep 2025 | Viewed by 214 | Submission Open
Keywords: energy consumption; composite insulation materials; new structures; thermal and mechanical characteristics; energy efficiency; mechanical properties; construction industry
(This special issue belongs to the Section Materials for Energy Applications)
Bioprocessing-Inspired Fabrication of Materials
edited by
submission deadline 30 Sep 2025 | Viewed by 206 | Submission Open
Keywords: bioprocessing-inspired fabrication; bioprocessing-inspired synthesis; structures and functions; biomineralization-inspired; photosynthesis-inspired; additive manufacturing; microscale additive manufacturing; nanoscale additive manufacturing; bioinspired materials; biostructures; bioproperties and bioperformance; enamel-like nanocomposites; calcium-based minerals; biomineralization of collagen fibrils; kinetics of mineral deposition; artificial mineralization; natural living organism-directed synthesis; protein- or organism-induced synthesis; physiological processes
(This special issue belongs to the Section Mineralogical Crystallography and Biomineralization)
Advancements in Wide and Ultra Wide Bandgap Semiconductor Devices for RF and Power Applications
edited by Abdelaziz Rabehi and
submission deadline 30 Sep 2025 | Viewed by 150 | Submission Open
Keywords: wide bandgap semiconductors; RF transistors; power electronics; GaN devices; SiC transistors; Ga2O3 devices; diamond transistors; 5G and 6G communication; power conversion; electric vehicles; smart grids; device reliability; energy efficiency
(This special issue belongs to the Section Materials for Energy Applications)
Recent Advances in the Stabilization of Metal Halide Perovskites
edited by Virginia Carnevali, Mingyang Wei, Vladislav Sláma and Lorenzo Agosta
submission deadline 1 Oct 2025 | Viewed by 261 | Submission Open
Keywords: 3D/2D perovskites; perovskite nucleation; low-dimension perovskites; machine-learned interatomic potentials; Rb incorporation; Cl incorporation; electron transport layer; hole transport layer; interface passivation; wide-bandgap perovskites; solar cell stability
(This special issue belongs to the Section Materials for Energy Applications)
Optical and Electrical Properties of Nano- and Microcrystals
edited by Yuhua Duan
submission deadline 10 Oct 2025 | 2 articles | Viewed by 1273 | Submission Open
Keywords: nano- and microcrystals; material growth methods; material characterization; semiconductor materials  ; optoelectronic devices; nanoscale fabrication techniques; multi-scale modeling; energy systems
(This special issue belongs to the Section Inorganic Crystalline Materials)
Crystalline Materials for Radiation Detection: A New Perspective (2nd Edition)
edited by
submission deadline 10 Oct 2025 | 1 articles | Viewed by 918 | Submission Open
Keywords: crystalline materials; semiconductor devices; radiation detectors; radiation induced defects; wide-band gap semiconductors (GaN; SiC; etc.); modeling; first-principles calculations; radiation hardness
(This special issue belongs to the Section Inorganic Crystalline Materials)
Pharmaceutical and Biotechnological Applications of Protein Crystals
edited by and
submission deadline 10 Oct 2025 | Viewed by 564 | Submission Open
Keywords: protein crystallisation; drug discovery; drug design; drug delivery; crystallography; machine learning; biopharmaceutical manufacturing; crystallisation techniques; downstream processes
(This special issue belongs to the Section Biomolecular Crystals)
The Design and Synthesis of Advanced Energy Catalytic Materials
edited by Wanliang Yang
submission deadline 10 Oct 2025 | Viewed by 207 | Submission Open
Keywords: energy catalytic materials; nanostructured catalyst; computational modelin; single-atom catalysts; metal– organic frameworks (MOFs); 2D materials
(This special issue belongs to the Section Materials for Energy Applications)
Advanced Technologies in Graphene-Based Materials (2nd Edition) submission deadline 15 Oct 2025 | 1 articles | Viewed by 1575 | Submission Open
Keywords: graphene and its related materials; reduced graphene oxide; carbon nanotubes; nanocomposites; synthesis and preparation; functionalization; surface characterization; coatings; (bio)sensors; energy storage devices
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Metallurgy-Processing-Properties Relationship of Metallic Materials
edited by
submission deadline 15 Oct 2025 | 2 articles | Viewed by 1071 | Submission Open
Keywords: metallurgy; phase transformation; phase diagram; material processing; alloy development; mechanical properties; microstructural analysis; simulation; characterization techniques
(This special issue belongs to the Section Crystalline Metals and Alloys)
Rare Earth-Based Crystalline Materials: Synthesis, Characterization and Applications
edited by Fuqiang Ren and Louwen Zhang
submission deadline 15 Oct 2025 | Viewed by 179 | Submission Open
Keywords: synthesis; rare earths; characterization; nanocrystals; luminescent properties; bioimaging; optoelectronics
(This special issue belongs to the Section Inorganic Crystalline Materials)
Crystal Growth and Characterization of Intermetallic Compounds
edited by Rubén Mendoza-Cruz
submission deadline 15 Oct 2025 | Viewed by 132 | Submission Open
Keywords: intermetallics; nanoalloys; compounds; structure; ordered phase
(This special issue belongs to the Section Crystalline Metals and Alloys)
Advances in Nanoscale Materials for Electrocatalytic and Sensing Applications
edited by Ming Su
submission deadline 20 Oct 2025 | 1 articles | Viewed by 782 | Submission Open
Keywords: nanoscale materials; synthesis and characterization; nanocrystals; nanocatalysts; electrocatalysis; electrocatalytic mechanisms; nanosensors; sensing applications
(This special issue belongs to the Section Materials for Energy Applications)
Widespread Application of Advanced Nanomaterials
edited by , Dan Xue and
submission deadline 20 Oct 2025 | Viewed by 169 | Submission Open
Keywords: advanced nanomaterials; functional nanomaterials; nanocomposites; energy storage and conversion; environmental nanotechnology; smart nanomaterials; stimuli-responsive systems; photocatalysis and sensors; nano-enabled electronics and photonics; sustainable synthesis; ai-assisted materials design; nanoscale characterization; structure– property relationships; multidisciplinary applications
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Research on Perovskite Materials and Perovskite Solar Cells submission deadline 20 Oct 2025 | Viewed by 154 | Submission Open
Keywords: perovskite solar cells; perovskite thin films; stability and degradation mechanisms; solar cell modeling; optoelectronic properties; tandem solar cells
Advanced Materials for CO2 Reduction
edited by Dalei Sun
submission deadline 20 Oct 2025 | Viewed by 139 | Submission Open
Keywords: heterogenous catalysts; CO2 capture and utilization; CO2 reduction
(This special issue belongs to the Section Materials for Energy Applications)
Layered Materials and Their Applications
edited by and Cristina Carbone
submission deadline 23 Oct 2025 | 1 articles | Viewed by 576 | Submission Open
Keywords: layered materials; LDH; anionic clays; composites; structure– properties relationships
(This special issue belongs to the Section Inorganic Crystalline Materials)
Emerging Perovskite Materials and Applications submission deadline 25 Oct 2025 | 2 articles | Viewed by 1426 | Submission Open
Keywords: perovskite materials; fluorescence; efficiency; solar cells; ion doping; pressure effects; phase transition; optical properties; vibrational spectroscopy; electronic state calculations; theoretical models
(This special issue belongs to the Section Inorganic Crystalline Materials)
Research Progress of Laser Crystals
edited by Huili Zhang and
submission deadline 25 Oct 2025 | 1 articles | Viewed by 559 | Submission Open
Keywords: laser crystal; crystal growth; crystal structure; spectral properties; laser performance
Structure, Properties, and Applications of Nanomaterials and Thin Films
edited by
submission deadline 25 Oct 2025 | Viewed by 100 | Submission Open
Keywords: nanomaterials; thin films; interface phenomena; nanostructure-property relationships; synthesis techniques; characterization methods; electronic and optical Properties; energy storage applications; biomedical nanotechnology; device integration
Welding and Joining of Metallic Materials: Microstructure and Mechanical Properties, 2nd Edition
edited by and Reza Beygi
submission deadline 31 Oct 2025 | 6 articles | Viewed by 7676 | Submission Open
Keywords: friction stir welding; laser welding; electron beam welding; hybrid welding; adhesive bonding; welding-based additive manufacturing (WAAM); gas metal arc welding (GMAW); gas tungsten arc welding (GTAW); shielded metal arc welding (SMAW); welding parameters and optimization; microstructure; post-weld heat treatment; grain structure; phase transformations; precipitates; defects; residual stresses; mechanical properties; non-destructive testing; fatigue analysis; fracture mechanics; weld integrity; reliability assessments
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Recent Achievements in Oxide Transistors
edited by Penghui He and
submission deadline 31 Oct 2025 | Viewed by 135 | Submission Open
Keywords: novel oxide materials; high mobility and robust stability; advanced fabrication techniques; device innovation and physics; emergent phenomena or applications
(This special issue belongs to the Section Inorganic Crystalline Materials)
The Development of Advanced Materials for Electrochemical Energy Conversion and Storage
edited by Zhipeng Yu and Hong Yin
submission deadline 1 Nov 2025 | 3 articles | Viewed by 9137 | Submission Open
Keywords: advanced materials; electrochemical energy conversion; electrochemical energy storage; water electrolysis; fuel cells; batteries; supercapacitors; nanostructured materials; composite materials; novel electrolytes; energy efficiency
(This special issue belongs to the Section Materials for Energy Applications)
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