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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Ceramic Materials: Structural, Mechanical and Dielectric Properties
edited by and
submission deadline 25 Jan 2026 | 2 articles | Viewed by 2213
Keywords: dielectric materials; functional ceramics; complex oxides; ferroelectric materials; non-Debye relaxation; solid-state synthesis; sol– gel synthesis; structural characterization (XRD; SEM; Raman; XPS); composition– structure– property relationships; energy storage; microwave devices; flexible electronics; materials for communication systems; multifunctional composites; impedance analyzer; crystallographic; microstructural; optical properties
(This special issue belongs to the Section Polycrystalline Ceramics)
Crystalline Materials for Energy Conversion Applications in Solar Cells
edited by Eros Radicchi and Francesca Lo Presti
submission deadline 10 Feb 2026 | 4 articles | Viewed by 5832 | Submission Open
Keywords: solar cells; up-conversion; down-conversion; down-shifting; cystalline materials
(This special issue belongs to the Section Materials for Energy Applications)
Mechanical Properties of Microcrystalline Glass
edited by
submission deadline 10 Feb 2026 | 1 articles | Viewed by 3091 | Submission Open
Keywords: mechanical properties; crystalline glass; glass; glass-ceramic; hardness; crack resistance; fracture toughness; X-ray diffraction; optical properties; theoretical models
Research Progress of Crystalline Metamaterials submission deadline 10 Feb 2026 | 2 articles | Viewed by 2946 | Submission Open
Keywords: metamaterials; coding metamaterial; metadevices; cloaking; radar cross-section reduction; electromagnetic absorbtion reduction; imaging; sensing
(This special issue belongs to the Section Inorganic Crystalline Materials)
Superconductivity and Condensed Matter Physics
edited by Byungkyun Kang
submission deadline 10 Feb 2026 | 2 articles | Viewed by 2487 | Submission Open
Keywords: superconductors  ; high-temperature superconductivity; low-dimensional crystals; hydrides; spin-triplet superconductor; nanostructure; magnetism  ; topological quantum
(This special issue belongs to the Section Inorganic Crystalline Materials)
Mechanical Properties and Structure of Metal Materials
edited by Xiang Li, Wei Zhang and
submission deadline 10 Feb 2026 | 3 articles | Viewed by 2009 | Submission Open
Keywords: metal; metal-based metamaterials; architected metamaterials; microstructure; pores; honeycomb materials; lattice materials; truss materials; sandwich structure; cellular materials; mechanical property; structural design; application
(This special issue belongs to the Section Crystalline Metals and Alloys)
Density Functional Theory (DFT) in Crystalline Material
edited by , Rodrigo Gester and Mateus Ribeiro Lage
submission deadline 10 Feb 2026 | 1 articles | Viewed by 1552 | Submission Open
Keywords: density functional theory; crystalline materials; electronic structure; defects; phase stability; mechanical properties; surface science; high-throughput screening; machine learning; computational material science
Crystallization Processes and Simulation Calculations, Fourth Edition
edited by , and Mingxuan Li
submission deadline 10 Feb 2026 | 1 articles | Viewed by 1268 | Submission Open
Keywords: process analytical technology; process intensification; AI-enhanced crystallization; machine learning; multi-objective optimization; molecular dynamics simulation; hydrodynamics simulation
(This special issue belongs to the Section Industrial Crystallization)
Mechanical Properties and Friction Behavior of Metal Alloys and Their Composites
edited by Jingwen Qiu
submission deadline 10 Feb 2026 | 1 articles | Viewed by 945 | Submission Open
Keywords: mechanical properties; friction and wear; lubrication; steel; aluminum alloy; titanium alloy; magnesium alloy; high-entropy alloy; composites; EBSD; TEM; APT
(This special issue belongs to the Section Crystalline Metals and Alloys)
Crystallization of High-Performance Metallic Materials (3rd Edition)
edited by and
submission deadline 10 Feb 2026 | 2 articles | Viewed by 935 | Submission Open
Keywords: solidification of steel and alloys; casting process; solid phase transformation; high-performance metallic materials; in situ characterization; nucleation and growth in metals; inclusion/precipitate engineering in steel and alloys; slag and flux engineering; thermodynamics and kinetics of crystallization; process– structure– property correlation in alloys
(This special issue belongs to the Section Crystalline Metals and Alloys)
Properties and Synthesis of Luminescent Materials submission deadline 10 Feb 2026 | 1 articles | Viewed by 714 | Submission Open
Keywords: luminescent materials; lanthanide doping; transition metal doping; synthesis; structure– property correlations; optical properties; luminescence thermometry; fluorescence sensors; photocatalysis; defects
(This special issue belongs to the Section Materials for Energy Applications)
Microstructure Characterization and Design of Advanced Alloys submission deadline 10 Feb 2026 | 1 articles | Viewed by 713 | Submission Open
Keywords: advanced alloys; microstructure characterization; property optimization; multi-scale analysis; computational modeling
(This special issue belongs to the Section Crystalline Metals and Alloys)
Perovskites: Crystal Structure, Properties and Applications submission deadline 10 Feb 2026 | Viewed by 327 | Submission Open
Keywords: perovskite materials; crystal structure; material characterization; energy applications; nanotechnology; computational modeling
(This special issue belongs to the Section Materials for Energy Applications)
Synthesis and Structure of Nanocomposites
edited by and Zahra Heydari
submission deadline 10 Feb 2026 | Viewed by 244 | Submission Open
Keywords: nanocomposites; synthesis methods; nanofillers; advanced characterization; nanomaterials engineering
Advances in Self-Assembled Luminescent Materials
edited by Gong Zhang, and Jianrong Qiu
submission deadline 10 Feb 2026 | Viewed by 213 | Submission Open
Keywords: supramolecular polymers; supramolecular assembly; circularly polarized luminescence; chiral self-assembly; crystal structure; optoelectronic properties; aggregation-induced emission
Advances in Zr-Based Alloys (2nd Edition)
edited by Quan Dong and
submission deadline 10 Feb 2026 | Viewed by 186 | Submission Open
Keywords: microstructure; corrosion resistance; irradiation resistance; strengthening and toughening; mechanical properties; simulation
(This special issue belongs to the Section Crystalline Metals and Alloys)
Emerging Trends in Functional Oxide Ceramics
edited by Victor E. Álvarez-Montaño, and Subhash Sharma
submission deadline 17 Feb 2026 | Viewed by 138 | Submission Open
Keywords: functional oxide ceramics; high-entropy ceramics; crystal structure; solid-state synthesis; phase stability; dielectric properties; phase diagrams; complex oxides; structure– property relationships
(This special issue belongs to the Section Polycrystalline Ceramics)
Simulation on Casting and Solidification Process of Crystalline Metals and Alloys submission deadline 25 Feb 2026 | Viewed by 229 | Submission Open
Keywords: casting simulation; solidification modeling; crystalline metals and alloys; microstructure evolution; grain structure prediction; thermal and fluid flow analysis; phase transformation; numerical methods in metallurgy; defect prediction in casting
(This special issue belongs to the Section Crystalline Metals and Alloys)
Machine Learning for Material and Process Optimization in Additive Manufacturing submission deadline 26 Feb 2026 | 1 articles | Viewed by 1301 | Submission Open
Keywords: machine learning; additive manufacturing; process optimization; material design; artificial intelligence; material development; digital twins; process control; data-driven modeling; advanced manufacturing; sustainable manufacturing
Microstructure and Mechanical Behavior of Advanced High Strength Steels
edited by Mattia Franceschi
submission deadline 28 Feb 2026 | 1 articles | Viewed by 719 | Submission Open
Keywords: AHSS; quench and partitioning; carbide free bainite; medium manganese steel; TRIP; austenite; bainitic transformation; tensile properties; fatigue; heat treatment
Microstructure and Deformation of Advanced Alloys (2nd Edition) submission deadline 28 Feb 2026 | 1 articles | Viewed by 616 | Submission Open
Keywords: metals and alloys; defects; texture; microstructure; deformation; aging; properties; hot-working; cold-working
(This special issue belongs to the Section Crystalline Metals and Alloys)
Advances in Functional Materials for Lithium Secondary Battery System: Challenge, Opportunities, Solutions and Applications
edited by Jingzheng Weng, Minquan Tian and
submission deadline 28 Feb 2026 | Viewed by 285 | Submission Open
Keywords: functional materials; crystalline materials; polymer conductors; energy materials; electrode materials; solid electrolytes; high-voltage functional materials; lithium battery; next-generation post-lithium battery systems
(This special issue belongs to the Section Materials for Energy Applications)
Microstructure Characterization and Design of Alloys, 2nd Edition
edited by , Arnoldo Bedolla-Jacuiende, Jacinto Cortéz Pérez and
submission deadline 28 Feb 2026 | Viewed by 193 | Submission Open
Keywords: microstructural analysis; mechanical properties; tribological behavior of ferrous and non-ferrous alloys
(This special issue belongs to the Section Crystalline Metals and Alloys)
Synthesis, Crystal Structures and Hirshfeld Surface Analysis of Coordination Compounds (3rd Edition) submission deadline 10 Mar 2026 | 5 articles | Viewed by 8686 | Submission Open
Keywords: coordination complexes  ; synthesis  ; crystal and molecular structure  ; hirschfeld surface analysis; non-covalent interactions
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Recent Advances in Microstructure and Properties of Metals and Alloys (2nd Edition) submission deadline 10 Mar 2026 | 1 articles | Viewed by 909 | Submission Open
Keywords: microstructure characterization; phase transformations; material properties; mechanical properties; corrosion resistance; manufacturing technology
Advanced Research on Microstructure Evolution in Crystalline Materials
edited by Andreas Prahs and
submission deadline 10 Mar 2026 | Viewed by 242 | Submission Open
Keywords: microstructure evolution; theoretical modeling; computational simulation; nucleation mechanisms; morphological evolution  
Processing–Structure–Property Relationships in Next-Generation Titanium Alloys
edited by Maria Ntsoaki Mathabathe and Amogelang Sylvester Bolokang
submission deadline 10 Mar 2026 | Viewed by 239 | Submission Open
Keywords: titanium alloys; microstructural evolution; phase transformations; metastable β -titanium alloys; high-entropy Ti-based alloys; additive manufacturing; powder metallurgy; mechanical properties; corrosion resistance; fatigue and creep behaviour; biomedical applications; hydrogen storage; advanced characterization; computational thermodynamics; sustainable processing
(This special issue belongs to the Section Crystalline Metals and Alloys)
Ceramic Matrix Composites for High Temperature Applications
edited by Dustin Gilmer and
submission deadline 10 Mar 2026 | Viewed by 238 | Submission Open
Keywords: ceramic matrix composite; high temperature; oxidation; advanced manufacturing; compositionally complex ceramics; ultra-high temperature ceramics; fiber reinforced composite
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Innovations in Catalytic Materials and Advanced Crystal Engineering
edited by Zhi Gao and
submission deadline 10 Mar 2026 | Viewed by 200 | Submission Open
Keywords: catalytic materials; advanced crystal engineering; crystal structure design; catalytic performance; sustainable technology innovation
(This special issue belongs to the Section Crystal Engineering)
Non-Fourier Thermal Wave Crystals: Fundamentals, Modeling, and Applications
edited by Jesus Manzanares-Martinez
submission deadline 10 Mar 2026 | Viewed by 143 | Submission Open
Keywords: thermal wave crystals; hyperbolic heat conduction; Bloch/Floquet analysis; thermal band gaps; nanoscale heat transfer; phonon hydrodynamics; layered composites; wave-based thermal management
(This special issue belongs to the Section Inorganic Crystalline Materials)
The Cutting Edge of Energy Materials Research Aimed at Practical Application
edited by
submission deadline 15 Mar 2026 | Viewed by 228 | Submission Open
Keywords: perovskite material; battery material (secondary battery; super capacitor; etc.); wide-bandgap semiconductor; thermoelectric materials (solid and liquid); characterization
(This special issue belongs to the Section Materials for Energy Applications)
Structure-Based Drug Design and New Methodologies submission deadline 15 Mar 2026 | Viewed by 175 | Submission Open
Keywords: new drugs; noncovalent interactions; molecular recognition; supramolecular chemistry; PROTAC
(This special issue belongs to the Section Biomolecular Crystals)
Welding and Joining of Metallic Materials: Microstructure and Mechanical Properties, 2nd Edition
edited by and Reza Beygi
submission deadline 20 Mar 2026 | 8 articles | Viewed by 12789 | 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)
Organic Photonics: Organic Optical Functional Materials and Devices
edited by Yaoxing Bian, Xiaoyu Shi and Junhua Tong
submission deadline 20 Mar 2026 | 5 articles | Viewed by 11430 | Submission Open
Keywords: micro- and nano-cavity lasers; random laser; light-emitting materials and devices; photophysics and spectroscopy for light-emitting materials; photodetection techniques; sensors; micro-nano structured organic semiconductor materials and devices; non-Hermitian; parity– time symmetry; organic flexible driving material; organic smart material
(This special issue belongs to the Section Organic Crystalline Materials)
Microstructure and Characterization of Crystalline Materials submission deadline 20 Mar 2026 | 5 articles | Viewed by 4401 | Submission Open
Keywords: metallic and composite materials; casting; AM; plastic working; SPD; microstructure evolution and characterization; plasticity; mechanical properties; destructive and nondestructive testing; computer simulations; expert systems
(This special issue belongs to the Section Crystal Engineering)
Advances in Thin-Film Materials and Their Applications
edited by and Abdessamad Aouni
submission deadline 20 Mar 2026 | 4 articles | Viewed by 4061 | Submission Open
Keywords: thin-film materials; coatings; synthesis and growth; interfacial phenomena
(This special issue belongs to the Section Inorganic Crystalline Materials)
Optical Properties of Crystalline Semiconductors and Nanomaterials
edited by
submission deadline 20 Mar 2026 | 2 articles | Viewed by 3206 | Submission Open
Keywords: semiconductors; optoelectronics; quantum dots; nanoparticles; nanostructures; quantum materials; photoluminescence; photoelectric
(This special issue belongs to the Section Inorganic Crystalline Materials)
Advances in Wide Bandgap Semiconductor Materials
edited by Sanjie Liu, Xinhe Zheng, and
submission deadline 20 Mar 2026 | Viewed by 224 | Submission Open
Keywords: wide-bandgap semiconductor; crystal growth; MBE; CVD/MOCVD; HVPE; optoelectronics; power electronics; LED; UV; nanostructures; doping; defects; electron mobility; thermal conductivity
(This special issue belongs to the Section Materials for Energy Applications)
Advances in Electrochemical Energy Storage Materials: From Fundamental Mechanisms to Practical Applications
edited by Weiqiang Lv and
submission deadline 20 Mar 2026 | Viewed by 220 | Submission Open
Keywords: electrochemical energy storage; advanced materials; battery; catalysis; in situ characterization; interfacial chemistry; nanomaterials; solid-state electrolytes; mechanism elucidation; device engineering
(This special issue belongs to the Section Materials for Energy Applications)
Microstructure and Mechanical Behaviour of Structural Materials: 3rd Edition
edited by Saif Haider Kayani and Byung-Joo Kim
submission deadline 20 Mar 2026 | 1 articles | Viewed by 172 | Submission Open
Keywords: Fe alloys and steels; lightweight alloys; powder metallurgy; microstructural analysis; deformation analysis
(This special issue belongs to the Section Crystalline Metals and Alloys)
Research on Complex Oxide Nanomaterials
edited by and Irina D. Stambolova
submission deadline 20 Mar 2026 | Viewed by 171 | Submission Open
Keywords: complex oxide; nanomaterials; composites; synthesis; physicochemical characterization; photocatalysis; application
(This special issue belongs to the Section Materials for Energy Applications)
Nanocrystalline Materials Processing and Characterization submission deadline 30 Mar 2026 | Viewed by 405 | Submission Open
Keywords: nanomaterials; nanostructures; advanced materials; additive manufacturing; mechanical alloying; spark plasma sintering; functional materials; biomaterials; annealing; simulation and modelling
Structural Studies in Drug Discovery and Development: From the Lead to the Pharmaceutical Form, 2nd Edition submission deadline 31 Mar 2026 | 3 articles | Viewed by 5314 | Submission Open
Keywords: single-crystal X-ray diffraction; structural analysis; spectroscopic methods; spectrometric methods; pharmaceutical compounds; biologically active molecules; organic molecules; metal complexes; synthetic intermediates; atropisomers; absolute configuration; asymmetric synthesis; catalysis; mechanistic investigations; polymorphism; co-crystals; solubility
(This special issue belongs to the Section Crystal Engineering)
Polymorphism and Phase Transitions in Crystal Materials submission deadline 31 Mar 2026 | 3 articles | Viewed by 4580 | Submission Open
Keywords: polymorph; polymorphism; phase transition; form change; crystal; cocrystal; solid; pharmaceutical; solid state
(This special issue belongs to the Section Crystal Engineering)
Research in Ferromagnetic Materials submission deadline 31 Mar 2026 | Viewed by 957 | Submission Open
Keywords: ferromagnetic materials; external magnetic field; magnetization; Curie temperature; hysteresis; magnetocaloric effect; modeling methods; innovative applications
Nanostructured Functional Materials: Structure, Properties, and Emerging Applications submission deadline 31 Mar 2026 | Viewed by 323 | Submission Open
Keywords: nanostructured materials; structure– property relationships; advanced functional materials; biomedical and environmental applications; materials for water treatment and energy
Density Functional Theory in Optoelectronic Materials submission deadline 31 Mar 2026 | Viewed by 281 | Submission Open
Keywords: first-principles study; electrodeposition technique; thin-film deposition; electronic structure; optical properties; metal oxide semiconductors; quantum mechanical modeling; 2D materials; XRD analysis; SEM/EDX characterization
Advances in Photocatalytic Technology and Materials submission deadline 31 Mar 2026 | Viewed by 210 | Submission Open
Keywords: photocatalytic materials; nanostructured photocatalysts; scalable solar fuel production; hydrogen generation; photoelectrochemical; charge transfer separation; CO2 valorization; semiconductor interfaces; photocatalytic structural modification; photocatalytic reforming
(This special issue belongs to the Section Materials for Energy Applications)
Functional Thin Films: Growth, Characterization, and Applications
edited by and Dominika Majchrzak
submission deadline 10 Apr 2026 | 2 articles | Viewed by 744 | Submission Open
Keywords: functional and functionalized thin films; thin film growth and fabrication; 2D materials and layered structures; thin film characterization techniques; modeling and simulations of thin films; surface modification and interface engineering; functional thin films for catalysis; electronics; optics; sensors; coatings; biotechnology; medicine and micromechanical applications
(This special issue belongs to the Section Inorganic Crystalline Materials)
Microstructural Engineering in Powder Metallurgy and Additive Manufacturing Alloys
edited by José M. Mendoza-Duarte, and
submission deadline 10 Apr 2026 | Viewed by 262 | Submission Open
Keywords: aluminum-based alloys; metal matrix composites; high-energy ball milling; powder metallurgy; high frequency induction sintering; precipitation kinetics and phase transformations; high-frequency induction sintering; environmental adsorbents; microstructure– mechanical properties relationships
(This special issue belongs to the Section Crystalline Metals and Alloys)
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