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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Feature Papers on “Hybrid and Composite Crystalline Materials” 2025
edited by
submission deadline 31 Dec 2025 | 4 articles | Viewed by 2860 | Submission Open
Keywords: hybrid materials; composite materials; intermolecular interactions; molecular crystals; coordination polymers; metal– organic frameworks; covalent organic frameworks; hierarchical zeolites; zeolite-like materials; organic– inorganic hybrids; graphene; carbon nitride; layered sulfides; metal nanoparticles; metal oxide nanoparticles; metal chalcogenide nanoparticles; metal pnictide nanoparticles; MXenes
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Advances and Perspectives in Noble Metal Nanoparticles submission deadline 31 Dec 2025 | 1 articles | Viewed by 551 | Submission Open
Keywords: nanomaterials; nanoparticles; noble metal; AuNPs; AgNPs; PtNPs; platinum group metals; sensing; catalysis; nanomedicine; bioactivity
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Optical Vortices and Solitons submission deadline 31 Dec 2025 | Viewed by 233 | Submission Open
Keywords: vortex structures; solitons; nonlinear optics; biophotonics
Advanced Research on Perovskite Solar Cells
edited by Chunyang Zhang, , and
submission deadline 31 Dec 2025 | Viewed by 178 | Submission Open
Keywords: perovskite; solar cell; carbon-based; stable; cost; efficient; energy; structural design
(This special issue belongs to the Section Materials for Energy Applications)
Graphene-Related and Graphene-Like Reinforcements in Composites: Manufacturing and Applications
edited by and Silvia Vesco
submission deadline 31 Dec 2025 | Viewed by 122 | Submission Open
Keywords: two-dimensional materials; polymer composites; metal matrix composites; coatings; particle reinforcement; green manufacturing; lightweighting; wear resistance; mechanical performances; conductivity
Metamaterials and Their Devices, Second Edition
edited by
submission deadline 10 Jan 2026 | 6 articles | Viewed by 7087 | Submission Open
Keywords: metamaterials; lattice metamaterials; crystal materials and structures; plasmonic and dielectric metamaterials; photonic crystals; phononic crystals; metasurfaces; fundamental issues; emerging fields for MMs; electromagnetic response; magnetic-resonance; electric-resonance; numerical methods; applications
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Performance and Processing of Metal Materials
edited by Zhanfeng Wang and Benilde F. O. Costa
submission deadline 10 Jan 2026 | 2 articles | Viewed by 986 | Submission Open
Keywords: metal materials; high-performance alloys; advanced processing techniques; material behavior modeling; mechanical properties
(This special issue belongs to the Section Crystalline Metals and Alloys)
Advances in Glass-Ceramics
edited by and Janusz Partyka
submission deadline 10 Jan 2026 | 1 articles | Viewed by 950 | Submission Open
Keywords: glass-ceramics; polycrystalline materials; crystallization of glass; nucleation and crystal growth
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Surface Modification Treatments of Metallic Materials (2nd Edition)
edited by , Zongwei Ren and
submission deadline 10 Jan 2026 | 1 articles | Viewed by 559 | Submission Open
Keywords: surface modification; surface integrity; microstructure; residual stress; surface morphology; microhardness; metallic materials; mechanical property; fatigue; high-performance manufacturing
(This special issue belongs to the Section Crystalline Metals and Alloys)
Structure and Characterization of Enzymes
edited by
submission deadline 10 Jan 2026 | Viewed by 91 | Submission Open
Keywords: enzyme structure; biocatalysis; structure– function relationship; X-ray crystallography; artificial intelligence in structural biology
2D Crystalline Nanomaterials (2nd Edition)
edited by Yao Yao
submission deadline 10 Jan 2026 | Viewed by 68 | Submission Open
Keywords: 2D crystalline nanomaterial; device; electronic
Mechanical Properties of Light Alloys
edited by Wenjie Song and
submission deadline 10 Jan 2026 | Viewed by 57 | Submission Open
Keywords: magnesium; microstructure; mechanical properties; friction stir welding; cast; plastic deformation; hydrogen storage; kinetics; titanium; aluminum; titanium alloy casting; high-performance aluminum alloy; counter-gravity casting; titanium aluminide
Synchrotron X-Ray Techniques in the Study of Nanomaterials
edited by Lucas Atila Bernardes Marçal, Ângelo Malachias de Souza and
submission deadline 10 Jan 2026 | Viewed by 50 | Submission Open
Keywords: X-ray diffraction; crystallography; synchrotron radiation; nanomaterials; crystal dynamics; X-ray spectroscopy; nano-device characterization
Advances in Metal Matrix Composites (Second Edition)
edited by
submission deadline 15 Jan 2026 | 2 articles | Viewed by 3884 | Submission Open
Keywords: metal matrix composites; additive manufacturing; nanocarbons; spark plasma sintering; powder metallurgy; interface control; strengthening mechanism; mechanical response; functional properties
(This special issue belongs to the Section Crystalline Metals and Alloys)
Lanthanide Coordination Complexes: Advances in Ligand Design, Structure, and Luminescent Applications
edited by Nawal Al-Rasbi
submission deadline 15 Jan 2026 | Viewed by 322 | Submission Open
Keywords: lanthanide(III) coordination complexes; crystal structure; ligand’ s design; luminescence properties; light emitting diodes (LEDs); luminescent chemo-sensors; antibacterial and antimicrobial activity
(This special issue belongs to the Section Inorganic Crystalline Materials)
Alloy Materials Degradation and Microstructural Study submission deadline 15 Jan 2026 | Viewed by 139 | Submission Open
Keywords: high-temperature corrosion; material degradation; extreme environment materials; hot corrosion; molten salt corrosion; scanning electron microscopy; mechanical properties; corrosion mechanism; corrosion-resistant alloys; coatings; microstructure characterization
(This special issue belongs to the Section Crystalline Metals and Alloys)
Crystalline Materials for Energy Storage submission deadline 15 Jan 2026 | Viewed by 34 | Submission Open
Keywords: energy storage; solid-state electrolytes; flexible and wearable storage devices; thin-film supercapacitors; integration of harvesting/storage elements
(This special issue belongs to the Section Materials for Energy Applications)
Advances in Crystalline Nanocellulose and Its Derivatives for Sustainable Functional Materials
edited by Carlos Molina-Ramírez and
submission deadline 15 Jan 2026 | Viewed by 7 | Submission Open
Keywords: crystalline nanocellulose; cellulose nanocrystals (CNCs); cellulose nanofibrils (CNFs); circular economy; sustainable materials; nanocellulose applications; bio-based composites; structure– property relationships; biodegradable materials; functional nanomaterials
(This special issue belongs to the Section Organic Crystalline Materials)
Advances in Nanomaterials and Nanocomposites for Catalytic Applications
edited by
submission deadline 20 Jan 2026 | 4 articles | Viewed by 4425 | Submission Open
Keywords: nanomaterials; nanocomposites; nanocatalysts; catalytic performance; pollutant degradation; energy
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Metal Oxide-Based Nanomaterials: Advances in Synthesis, Characterization, and Applications submission deadline 20 Jan 2026 | 1 articles | Viewed by 4058 | Submission Open
Keywords: metal-oxide-based nanomaterials; nanocrystals; synthesis techniques; characterization; environmental remediation; catalysis; biomedical applications; green synthesis; toxicity assessment; sustainability; interdisciplinary research; machine learning; innovative research; environmental monitoring; drug delivery; life cycle analysis
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Analysis of Halogen and Other σ-Hole Bonds in Crystals (2nd Edition)
edited by
submission deadline 20 Jan 2026 | 2 articles | Viewed by 1561 | Submission Open
Keywords: halogen bonding; sigma-hole bonding; electrostatic potentials; nature of noncovalent interactions
(This special issue belongs to the Section Crystal Engineering)
Synergizing Crystallography, Mineral Materials Science and Solid Waste Upcycling for Sustainable Materials Innovation
edited by Limei Wu, Xin Liu and
submission deadline 20 Jan 2026 | Viewed by 74 | Submission Open
Keywords: mineral crystallography; mineral materials; solid waste valorization; AI-driven material design
Microstructure Analysis, Phase Composition and Properties of Steels submission deadline 20 Jan 2026 | Viewed by 35 | Submission Open
Keywords: advanced characterization of steel microstructures (SEM; TEM; EBSD; XRD; etc.); phase transformations and kinetics in alloyed steels; relationships between microstructure and mechanical properties; heat treatment; thermomechanical processing; and surface modification; modeling and simulation of microstructural evolution; correlation of crystal structure and anisotropy with physical properties; steel behavior under extreme environments (e.g.; cryogenic; high temperature; corrosive); novel alloying concepts and high-performance steel grades (e.g.; AHSS; TRIP; TWIP; maraging)
(This special issue belongs to the Section Crystalline Metals and Alloys)
Research and Applications of TiO2 Nanotube Layers submission deadline 21 Jan 2026 | Viewed by 104 | Submission Open
Keywords: TiO2 nanotube layers; upscaling; bipolar electrochemistry; anodization; photocatalysis; biomedical devices; environmental remediation; energy storage
Ceramic Materials: Structural, Mechanical and Dielectric Properties
edited by and
submission deadline 25 Jan 2026 | Viewed by 186 | Submission Open
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)
Research Progress of Crystalline Metamaterials submission deadline 10 Feb 2026 | 2 articles | Viewed by 1645 | 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)
Mechanical Properties of Microcrystalline Glass
edited by
submission deadline 10 Feb 2026 | 1 articles | Viewed by 1637 | Submission Open
Keywords: mechanical properties; crystalline glass; glass; glass-ceramic; hardness; crack resistance; fracture toughness; X-ray diffraction; optical properties; theoretical models
Mechanical Properties and Friction Behavior of Metal Alloys and Their Composites
edited by Jingwen Qiu
submission deadline 10 Feb 2026 | 1 articles | Viewed by 540 | 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)
Density Functional Theory (DFT) in Crystalline Material
edited by , Rodrigo Gester and Mateus Ribeiro Lage
submission deadline 10 Feb 2026 | Viewed by 335 | 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 | Viewed by 126 | 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)
Synthesis and Structure of Nanocomposites
edited by and Zahra Heydari
submission deadline 10 Feb 2026 | Viewed by 64 | Submission Open
Keywords: nanocomposites; synthesis methods; nanofillers; advanced characterization; nanomaterials engineering
Advances in Zr-Based Alloys (2nd Edition)
edited by Quan Dong and
submission deadline 10 Feb 2026 | Viewed by 61 | 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)
Advances in Self-Assembled Luminescent Materials
edited by Gong Zhang, and Jianrong Qiu
submission deadline 10 Feb 2026 | Viewed by 53 | Submission Open
Keywords: supramolecular polymers; supramolecular assembly; circularly polarized luminescence; chiral self-assembly; crystal structure; optoelectronic properties; aggregation-induced emission
Microstructure Characterization and Design of Advanced Alloys submission deadline 10 Feb 2026 | Viewed by 41 | 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)
Mechanical Properties and Structure of Metal Materials
edited by Xiang Li, Wei Zhang and
submission deadline 10 Feb 2026 | Viewed by 26 | 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)
Crystallization of High-Performance Metallic Materials (3rd Edition)
edited by
submission deadline 10 Feb 2026 | Viewed by 21 | 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
edited by Ljubica Đačanin Far and
submission deadline 10 Feb 2026 | Viewed by 1 | 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)
Simulation on Casting and Solidification Process of Crystalline Metals and Alloys submission deadline 25 Feb 2026 | Viewed by 31 | 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 150 | 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
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 80 | 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 72 | 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)
Microstructure and Mechanical Behavior of Adavance High Strength Steels
edited by Mattia Franceschi
submission deadline 28 Feb 2026 | Viewed by 72 | 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 | Viewed by 36 | 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)
Advanced Research on Microstructure Evolution in Crystalline Materials
edited by Andreas Prahs and
submission deadline 10 Mar 2026 | Viewed by 71 | Submission Open
Keywords: microstructure evolution; theoretical modeling; computational simulation; nucleation mechanisms; morphological evolution  
Recent Advances in Microstructure and Properties of Metals and Alloys (2nd Edition) submission deadline 10 Mar 2026 | Viewed by 49 | Submission Open
Keywords: microstructure characterization; phase transformations; material properties; mechanical properties; corrosion resistance; manufacturing technology
Optical Properties of Crystalline Semiconductors and Nanomaterials
edited by
submission deadline 20 Mar 2026 | 2 articles | Viewed by 2204 | 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 Thin-Film Materials and Their Applications
edited by and Abdessamad Aouni
submission deadline 20 Mar 2026 | 1 articles | Viewed by 1054 | Submission Open
Keywords: thin-film materials; coatings; synthesis and growth; interfacial phenomena
(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 17 | 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)
Nanocrystalline Materials Processing and Characterization submission deadline 30 Mar 2026 | Viewed by 120 | Submission Open
Keywords: nanomaterials; nanostructures; advanced materials; additive manufacturing; mechanical alloying; spark plasma sintering; functional materials; biomaterials; annealing; simulation and modelling
Research in Ferromagnetic Materials submission deadline 31 Mar 2026 | Viewed by 621 | Submission Open
Keywords: ferromagnetic materials; external magnetic field; magnetization; Curie temperature; hysteresis; magnetocaloric effect; modeling methods; innovative applications
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