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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Advances in Self-Assembled Luminescent Materials
edited by Gong Zhang, and Jianrong Qiu
submission deadline 10 Feb 2026 | Viewed by 144 | Submission Open
Keywords: supramolecular polymers; supramolecular assembly; circularly polarized luminescence; chiral self-assembly; crystal structure; optoelectronic properties; aggregation-induced emission
Crystallization of High-Performance Metallic Materials (3rd Edition)
edited by
submission deadline 10 Feb 2026 | Viewed by 101 | 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)
Advances in Zr-Based Alloys (2nd Edition)
edited by Quan Dong and
submission deadline 10 Feb 2026 | Viewed by 91 | 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 78 | 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 115 | 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 881 | 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 Deformation of Advanced Alloys (2nd Edition) submission deadline 28 Feb 2026 | 1 articles | Viewed by 334 | 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 179 | 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 and Mechanical Behavior of Advanced High Strength Steels
edited by Mattia Franceschi
submission deadline 28 Feb 2026 | Viewed by 169 | Submission Open
Keywords: AHSS; quench and partitioning; carbide free bainite; medium manganese steel; TRIP; austenite; bainitic transformation; tensile properties; fatigue; heat treatment
Microstructure Characterization and Design of Alloys, 2nd Edition
edited by , Arnoldo Bedolla-Jacuiende, Jacinto Cortéz Pérez and
submission deadline 28 Feb 2026 | Viewed by 117 | 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 | 4 articles | Viewed by 6729 | 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 543 | 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 174 | Submission Open
Keywords: microstructure evolution; theoretical modeling; computational simulation; nucleation mechanisms; morphological evolution  
Innovations in Catalytic Materials and Advanced Crystal Engineering
edited by Zhi Gao and
submission deadline 10 Mar 2026 | Viewed by 143 | 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)
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 131 | 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 118 | 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)
Non-Fourier Thermal Wave Crystals: Fundamentals, Modeling, and Applications
edited by Jesus Manzanares-Martinez
submission deadline 10 Mar 2026 | Viewed by 75 | 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 131 | 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 97 | 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 | 6 articles | Viewed by 9260 | 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)
Microstructure and Characterization of Crystalline Materials submission deadline 20 Mar 2026 | 5 articles | Viewed by 2996 | 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)
Optical Properties of Crystalline Semiconductors and Nanomaterials
edited by
submission deadline 20 Mar 2026 | 2 articles | Viewed by 2740 | 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 | 3 articles | Viewed by 2620 | 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 140 | 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 130 | 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)
Research on Complex Oxide Nanomaterials
edited by and Irina D. Stambolova
submission deadline 20 Mar 2026 | Viewed by 111 | Submission Open
Keywords: complex oxide; nanomaterials; composites; synthesis; physicochemical characterization; photocatalysis; application
(This special issue belongs to the Section Materials for Energy Applications)
Microstructure and Mechanical Behaviour of Structural Materials: 3rd Edition
edited by Saif Kayani and Byung-Joo Kim
submission deadline 20 Mar 2026 | Viewed by 47 | 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)
Nanocrystalline Materials Processing and Characterization submission deadline 30 Mar 2026 | Viewed by 323 | Submission Open
Keywords: nanomaterials; nanostructures; advanced materials; additive manufacturing; mechanical alloying; spark plasma sintering; functional materials; biomaterials; annealing; simulation and modelling
Polymorphism and Phase Transitions in Crystal Materials submission deadline 31 Mar 2026 | 3 articles | Viewed by 2912 | 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 874 | 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 224 | 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 196 | 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 142 | 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)
Microstructural Engineering in Powder Metallurgy and Additive Manufacturing Alloys
edited by José M. Mendoza-Duarte, and
submission deadline 10 Apr 2026 | Viewed by 193 | 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)
Functional Thin Films: Growth, Characterization, and Applications
edited by and Dominika Majchrzak
submission deadline 10 Apr 2026 | Viewed by 143 | 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 and Technological Aspects of Directed Energy Deposition
edited by and Alberto Santoni
submission deadline 10 Apr 2026 | Viewed by 95 | Submission Open
Keywords: laser powder directed energy deposition; metals and alloys; ceramics and metal matrix composites; microstructural features; wire arc additive manufacturing; mechanical properties; hierarchical structures; finite element simulations
(This special issue belongs to the Section Inorganic Crystalline Materials)
Recent Progress in Perovskite Materials for Solar Cells and Optoelectronic Devices
edited by Myeongkee Park
submission deadline 10 Apr 2026 | Viewed by 60 | Submission Open
Keywords: perovskite materials; solar cells; optoelectronic devices; optical characterization; electrochemical characterization; stability enhancement; device architecture; organic; halogen; and metal compositional engineering
(This special issue belongs to the Section Materials for Energy Applications)
Polymeric Materials for Sustainable Catalysis and Energy Applications
edited by Salvatore Impemba, , and
submission deadline 15 Apr 2026 | Viewed by 131 | Submission Open
Keywords: polymer; catalyst; biomass; energy; hydrogen; nanoparticles; electrocatalysis
(This special issue belongs to the Section Inorganic Crystalline Materials)
Optical Properties and Applications of 2D Materials
edited by José Guadalupe Murillo-Ramírez and
submission deadline 20 Apr 2026 | 1 articles | Viewed by 2222 | Submission Open
Keywords: monoatomic layers; graphene oxide; photonic materials; heterojunctions; thin films
(This special issue belongs to the Section Inorganic Crystalline Materials)
Advances in Nanoscale Materials for Electrocatalytic and Sensing Applications
edited by Ming Su
submission deadline 20 Apr 2026 | 1 articles | Viewed by 998 | 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)
Advances in Processing, Simulation and Characterization of Alloys (2nd Edition)
edited by , , Fuyu Dong and
submission deadline 20 Apr 2026 | 1 articles | Viewed by 298 | Submission Open
Keywords: alloy design; process optimization; heat treatments; phase transformations; mechanical; anti-corrosion; soft magnetic and other properties; microstructural characterization; modeling and simulation; Finite Element Analysis (FEA)
(This special issue belongs to the Section Crystalline Metals and Alloys)
Electron Microscopy Characterization of Soft Matter Materials
edited by and
submission deadline 20 Apr 2026 | Viewed by 254 | Submission Open
Keywords: cryo-electron microscopy (cryo-em); low-dose electron microscopy  ; focused ion beam sem (fib-sem); tomography; beam-sensitive materials  ; nanostructure characterization  ; structure-property relationships  ; deep learning segmentation; image processing; 3D reconstruction
Research on Functional Nanomaterials
edited by Erick L. Ribeiro, Zhen Zhang, and Gabriel Adolfo Cabrera-Pasca
submission deadline 20 Apr 2026 | Viewed by 48 | Submission Open
Keywords: nanomaterial synthesis and characterization; nanomaterials for energy and electronics; biomedical nanomaterials; magnetic nanomaterials; nanocatalysis; advanced nanostructures and hybrid nanocomposites; nanoscale surface functionalization; computational modeling of nanomaterials; data-driven materials discovery; optimization algorithms
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Advances in Preparation, Characterization and Application of Hydroxyapatite-Based Materials
edited by Nestor Méndez-Lozano and
submission deadline 20 Apr 2026 | Viewed by 43 | Submission Open
Keywords: hydroxyapatite; synthesis; doping; crystallization process; nucleation mechanisms; crystal growth; crystal structure; morphology; biomaterials; dental applications
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Optoelectronic Materials: Properties and Applications
edited by
submission deadline 20 Apr 2026 | Viewed by 22 | Submission Open
Keywords: optoelectronic materials; light-emitting devices; organic semiconductors
(This special issue belongs to the Section Materials for Energy Applications)
State-of-the-Art of Crystalline Metals and Alloys
edited by Roberto Martínez-Sánchez and
submission deadline 22 Apr 2026 | Viewed by 44 | Submission Open
Keywords: metals; alloys; solidification; grains; textures; dislocations; phase transformations; twinning; precipitation; martensite; X-ray diffraction; electron microscopy; casting; rolling; welding; additive manufacturing; mechanical properties
(This special issue belongs to the Section Crystalline Metals and Alloys)
Research and Applications of ZnO Thin Films
edited by , António F. da Cunha and
submission deadline 24 Apr 2026 | Viewed by 146 | Submission Open
Keywords: ZnO thin films; plasma-assisted deposition; magnetron sputtering; defect engineering; transparent conductive oxides; UV optoelectronics; flexible and wearable devices; energy harvesting; aerospace and environmental applications
(This special issue belongs to the Section Inorganic Crystalline Materials)
Microstructure, Properties and Characterization of Aluminum Alloys submission deadline 10 May 2026 | Viewed by 51 | Submission Open
Keywords: aluminum alloys; microstructure evolution; mechanical properties; corrosion resistance; precipitation strengthening; advanced characterization; additive manufacturing; thermomechanical processing; phase transformation; structure– property relationships
(This special issue belongs to the Section Crystalline Metals and Alloys)
Computational Phase Stabilities and Phase Tailoring of Alternative and Sustainable Hard Magnetic Materials
edited by and Thorsten Klüner
submission deadline 10 May 2026 | Viewed by 35 | Submission Open
Keywords: hard magnetic materials; computational materials design; computational phase stability; sustainable magnets; rare-earth-free magnets; rare-earth-lean magnets; thermodynamic modeling; computational material discovery; materials informatics
(This special issue belongs to the Section Inorganic Crystalline Materials)
Advances in Electrocatalyst Materials for Sustainable Applications
edited by and César A. Zúñiga
submission deadline 10 May 2026 | Viewed by 31 | Submission Open
Keywords: crystals; carbon nanomaterials; electrocatalysts; sustainability; circular; energy conversion devices; hydrogen economy; renewable sources
(This special issue belongs to the Section Materials for Energy Applications)
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