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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Microstructure Characterization and Design of Advanced Alloys submission deadline 20 Nov 2026 | 3 articles | Viewed by 3041 | 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)
Advances in Wide Bandgap Semiconductor Materials
edited by Sanjie Liu, Xinhe Zheng, and
submission deadline 20 Nov 2026 | 3 articles | Viewed by 2555 | 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)
Bridging the Embryonic Period for Disruptive Innovation in Crystal Growth
edited by
submission deadline 20 Nov 2026 | 2 articles | Viewed by 1314 | Submission Open
Keywords: synthesis technique; growth technique; in situ evaluation; theoretical approach; solubility; interface; defect; diffusion
(This special issue belongs to the Section Crystal Engineering)
Synthesis, Crystal Structures and Hirshfeld Surface Analysis of Coordination Compounds (4th Edition) submission deadline 20 Nov 2026 | 1 articles | Viewed by 797 | 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)
Advances in Adsorbent Materials: Properties and Applications
edited by , Atul A. Pawar and
submission deadline 20 Nov 2026 | 1 articles | Viewed by 747 | Submission Open
Keywords: porous materials; sustainability; environmental remedies; energy; adsorption kinetics; 2D/3D materials; metal organic frameworks/zeolites/activated carbons; surface area; selectivity; bio adsorbents
(This special issue belongs to the Section Materials for Energy Applications)
Pharmaceutical Cocrystals: Design, Stability, and Performance
edited by Larissa Bernardi and
submission deadline 20 Nov 2026 | Viewed by 244 | Submission Open
Keywords: pharmaceutical cocrystals; crystal engineering; drug solubility enhancement; solid-state pharmaceuticals
(This special issue belongs to the Section Industrial Crystallization)
Research on Single-Crystal Superalloys
edited by and
submission deadline 20 Nov 2026 | 1 articles | Viewed by 193 | Submission Open
Keywords: single-crystal superalloys; creep; solidification and casting; oxidation and corrosion; microstructure stability; additive manufacturing; thermal barrier coatings (TBCs); alloy design (computational/experimental); fatigue and fracture
(This special issue belongs to the Section Crystalline Metals and Alloys)
Laser Control of Creation and Growth of Crystals
edited by
submission deadline 20 Nov 2026 | Viewed by 134 | Submission Open
Keywords: glass crystallization; organic crystallization; three-dimensional direct writing technique; ultra-fast processes in optics; optical nonlinearities control in condensed matter; photosensitivity; polymorphism control; optical chirality control; laser-induced new crystalline phases
Recent Advances in the Development and Application of Clay-Based Hybrid and Composite Materials submission deadline 10 Dec 2026 | 1 articles | Viewed by 1100 | Submission Open
Keywords: clay functionalization and intercalation chemistry; structural and morphological characterization; organo-clay nanocomposites; chemical sensors and BioSensors; materials for 3D printing
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Advances and Expansion of Epitaxial Nitride-Based Materials
edited by , Robert A. Makin and
submission deadline 10 Dec 2026 | 1 articles | Viewed by 733 | Submission Open
Keywords: epitaxy; nitride; heterostructure; doping; electrical transport; magnetism; optical properties; machine learning; artificial intelligence
(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 Dec 2026 | Viewed by 617 | 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)
Synthesis, Preparation and Applications of Nanostructured Materials submission deadline 10 Dec 2026 | Viewed by 480 | Submission Open
Keywords: nanomaterials; nanostructures; nanomagnetism; nanodevices; smart nanomaterials; nanotechnology
(This special issue belongs to the Section Inorganic Crystalline Materials)
Predictive Modelling of Inorganic Functional Materials: From Fundamentals to Device Applications
edited by
submission deadline 10 Dec 2026 | Viewed by 375 | Submission Open
Keywords: functional inorganic materials; optical materials; energy materials; interatomic potentials; density functional theory
(This special issue belongs to the Section Inorganic Crystalline Materials)
Organic Photonics: Organic Optical Functional Materials and Devices (2nd Edition)
edited by Yaoxing Bian, Xiaoyu Shi and Junhua Tong
submission deadline 10 Dec 2026 | Viewed by 212 | 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)
Functional Thin Films: Growth, Characterization, and Applications
edited by and Dominika Majchrzak
submission deadline 20 Dec 2026 | 6 articles | Viewed by 6026 | 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)
Microstructure, Properties and Characterization of Aluminum Alloys submission deadline 20 Dec 2026 | 3 articles | Viewed by 3791 | 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)
Recent Progress in Corrosion Protection of Materials
edited by , Ivan Erick Castaneda-Robles and
submission deadline 20 Dec 2026 | 3 articles | Viewed by 1982 | Submission Open
Keywords: corrosion; protection; sustainable; materials
(This special issue belongs to the Section Industrial Crystallization)
Advanced Catalytic Materials in Energy and Environment
edited by Wanliang Yang
submission deadline 20 Dec 2026 | 2 articles | Viewed by 1901 | Submission Open
Keywords: crystalline catalysts; crystal facet; defect engineering; in situ XRD; CO2 reduction; water splitting; photocatalysis; electrocatalysis; perovskite; MOF
(This special issue belongs to the Section Materials for Energy Applications)
Electrochemical Preparation of Magnetic Materials
edited by Milica Spasojević Savković and
submission deadline 20 Dec 2026 | Viewed by 1770 | Submission Open
Keywords: electrodeposition; magnetization; electric properties; energy storage; electrochemistry
(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 20 Dec 2026 | 1 articles | Viewed by 1568 | Submission Open
Keywords: polymer; catalyst; biomass; energy; hydrogen; nanoparticles; electrocatalysis
(This special issue belongs to the Section Inorganic Crystalline Materials)
Advances in Processing, Simulation and Characterization of Alloys (2nd Edition)
edited by , , Fuyu Dong and
submission deadline 20 Dec 2026 | 1 articles | Viewed by 1511 | 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)
Advances in the Growth and Application of Nitride Crystals
edited by
submission deadline 20 Dec 2026 | 1 articles | Viewed by 1422 | Submission Open
Keywords: gallium nitride; aluminum nitride; boron nitride; crystal growth; substrate processing; hydride vapor phase epitaxy; flux method; high-pressure ammonothermal method; physical vapor transport; chemical mechanical polishing
(This special issue belongs to the Section Inorganic Crystalline Materials)
Raman Spectroscopy and Crystals: Classical Methods Bridging Modern Benchmarks
edited by and Gino Mariotto
submission deadline 20 Dec 2026 | 1 articles | Viewed by 874 | Submission Open
Keywords: Raman spectroscopy; crystalline materials; crystal structure; advanced characterization; ceramics; glass–ceramics; polymers; materials science
(This special issue belongs to the Section Inorganic Crystalline Materials)
Preparation and Performance Research of Piezoelectric Ceramics
edited by and Yongcheng Zhang
submission deadline 20 Dec 2026 | Viewed by 316 | Submission Open
Keywords: piezoelectric ceramics; ferroelectric materials; lead-free piezoelectrics; material synthesis; sintering; structure-property relationships; electromechanical properties; actuators and sensors
(This special issue belongs to the Section Polycrystalline Ceramics)
Adsorption and Photocatalytic Materials for Environmental Remediation
edited by Ruimeng Wang, Jianmin Chen and
submission deadline 20 Dec 2026 | Viewed by 253 | Submission Open
Keywords: advanced functional materials; adsorption; photocatalysis; mechanistic studies; scalable manufacturing; environmental remediation
(This special issue belongs to the Section Organic Crystalline Materials)
Laser Metal Additive Manufacturing and Laser Welding Processes submission deadline 20 Dec 2026 | Viewed by 223 | Submission Open
Keywords: additive manufacturing; welding processes; microstructure optimization; mechanical properties; medium/high-entropy alloys; superalloys; defect control
(This special issue belongs to the Section Crystalline Metals and Alloys)
Crystallization of High-Performance Metallic Materials (3rd Edition)
edited by and
submission deadline 30 Dec 2026 | 5 articles | Viewed by 4672 | 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)
Crystallographic and Molecular Approaches in Drug Design and Development
edited by , Nada Kheira Sebbar and Riham Sghyar
submission deadline 30 Dec 2026 | Viewed by 521 | Submission Open
Keywords: organic synthesis; medicinal chemistry; bioactive organic compounds; structure–activity relationships; molecular design; solid-state properties; QSAR/QSPR
(This special issue belongs to the Section Biomolecular Crystals)
Modern Gem Crystals: Synthesis, Characterization, Genesis and Intelligent Analysis
edited by , and
submission deadline 31 Dec 2026 | 10 articles | Viewed by 9236 | Submission Open
Keywords: gemology; mineralogy; geographic-origin determination; spectroscopy; synthetic gemstones; treatment detection; artificial intelligence (AI) in gemology; digitalization; non-destructive testing
(This special issue belongs to the Section Mineralogical Crystallography and Biomineralization)
Advances in Optoelectronic Materials
edited by Mourad Boutahir and El Mehdi El Khattabi
submission deadline 31 Dec 2026 | 5 articles | Viewed by 5029 | Submission Open
Keywords: two-dimensional materials; DFT; CVD
(This special issue belongs to the Section Materials for Energy Applications)
Applications of Crystalline Materials in Elastocaloric Devices submission deadline 31 Dec 2026 | 2 articles | Viewed by 2724 | Submission Open
Keywords: elastocaloric; shape memory alloys; austenite–martensite transformations; solid-state cooling; solid-state heat pumping
(This special issue belongs to the Section Materials for Energy Applications)
Crystals: 15th Anniversary submission deadline 31 Dec 2026 | 3 articles | Viewed by 2042 | Submission Open
Keywords: crystals; crystal growth; characterization techniques; crystalline; structure properties and applications of crystalline materials
Design and Development of Silicon Heterostructures for Electronics and Photonics
edited by Abel Garzón Román, Carlos Zúñiga Islas, Sergio Alberto Gamboa Sánchez and
submission deadline 31 Dec 2026 | 1 articles | Viewed by 1381 | Submission Open
Keywords: crystals; semiconductors, superconductors; characterization techniques; heterostructures, electronics, and photonics application; organic or inorganic materials; growth; deposit; experimental or computational results
(This special issue belongs to the Section Materials for Energy Applications)
Crystallization and Precipitation in Life-Science, (Bio)polymer and Recycling Industries
edited by , and Vico Tenberg
submission deadline 31 Dec 2026 | 1 articles | Viewed by 1043 | Submission Open
Keywords: phase equilibria; recycling processes; circular economy; biopolymer processing and valorization; sustainable process engineering; innovative crystallization and precipitation process concepts; industrial applications
(This special issue belongs to the Section Industrial Crystallization)
Selected Papers from the 5th International Online Conference on Crystals submission deadline 31 Dec 2026 | Viewed by 477 | Submission Open
Keywords: inorganic crystalline materials; liquid crystals; organic crystalline materials; hybrid and composite crystalline materials; materials for energy applications; crystal engineering; crystalline metals and alloys
Feature Papers on “Hybrid and Composite Crystalline Materials” 2026
edited by
submission deadline 31 Dec 2026 | Viewed by 380 | 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)
Research in Magnesium-Based Alloys
edited by Shifeng Luo, , Yan Wang and Xiao Lei
submission deadline 31 Dec 2026 | Viewed by 340 | Submission Open
Keywords: high-strength Mg alloys; thermal conductivity; texture; heterogeneous structure; LPSO phase; hot extrusion; dynamic recrystallization; creep
(This special issue belongs to the Section Crystalline Metals and Alloys)
Research on Biomedical Alloys, Biocompatible and Biodegradable Alloys
edited by
submission deadline 31 Dec 2026 | Viewed by 323 | Submission Open
Keywords: microstructure; corrosion; in vitro/in vivo analysis; biocompatible; biodegradable alloys
(This special issue belongs to the Section Crystalline Metals and Alloys)
Advanced Crystalline and Nanoscale Materials for Electronic and Optoelectronic Applications
edited by , and Zaved Hossain Khan
submission deadline 31 Dec 2026 | Viewed by 306 | Submission Open
Keywords: crystalline; nanoscale; electronic; optoelectronic
(This special issue belongs to the Section Materials for Energy Applications)
Scintillator Crystals: Structure, Characterization and Scintillation Models
edited by and
submission deadline 10 Jan 2027 | 1 articles | Viewed by 569 | Submission Open
Keywords: scintillator crystals; inorganic scintillator; organic scintillator; hybrid scintillator; nano-scintillator; crystal structure; defect engineering; carrier dynamics; kinetic modeling
(This special issue belongs to the Section Inorganic Crystalline Materials)
Microstructure and Mechanical Properties of Dissimilar Material Joints
edited by Xiajun Guo, , Chenghao Zhang, Jun Jin, and
submission deadline 10 Jan 2027 | Viewed by 167 | Submission Open
Keywords: welding and joining; dissimilar materials joining; brazing; mechanical properties; interfacial microstructure; ceramic; alloys
(This special issue belongs to the Section Crystalline Metals and Alloys)
Crystal Structure and Characterization of Minerals and Related Nanomaterials
edited by
submission deadline 20 Jan 2027 | 3 articles | Viewed by 4236 | Submission Open
Keywords: mineral, crystal, crystal structure; new mineral species and mineral groups; crystal chemistry and properties of minerals and related nanomaterials; chemical variability; homogeneity; advanced minerals and nanomaterials characterization
(This special issue belongs to the Section Mineralogical Crystallography and Biomineralization)
Advances in Scintillators: Luminescence Properties and Applications submission deadline 20 Jan 2027 | 1 articles | Viewed by 1603 | Submission Open
Keywords: scintillator crystals; inorganic scintillators; co-doped scintillators; mixed scintillators; hybrid scintillator materials (inorganic/organic); medical imaging; nuclear imaging detectors
Feature Papers on “Inorganic Crystalline Materials”
edited by
submission deadline 20 Jan 2027 | Viewed by 217 | Submission Open
Keywords: semiconductors; superconductors; ion conductors; magnets; photonic; optical; NLO; LASER and ferroic crystals; phosphors and scintillators; catalysts
(This special issue belongs to the Section Inorganic Crystalline Materials)
Advances in Medium/High-Entropy Materials
edited by Zhipeng Wang, Yuanyuan Tian and Yang Chen
submission deadline 20 Jan 2027 | Viewed by 186 | Submission Open
Keywords: medium-entropy materials; high-entropy materials; materials design; structure–property relationships; high-temperature stability; corrosion resistance; electrocatalysis; energy storage; computational materials science; machine learning
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
The Development and Application of Laser Material Processing
edited by Daniel Fernández-González and
submission deadline 20 Jan 2027 | Viewed by 117 | Submission Open
Keywords: ceramic matrix composites; three-dimensional structures; metal matrix composites; polymer based materials; laser material processing; selective laser sintering (SLS); additive manufacturing; laser–material interaction; surface engineering; process optimization; advanced manufacturing technologies
(This special issue belongs to the Section Inorganic Crystalline Materials)
Processing, Microstructure, and Properties of Metals
edited by Liang Huang, Lihong Jiang, and Siliang Yan
submission deadline 20 Jan 2027 | Viewed by 116 | Submission Open
Keywords: advanced processing techniques; microstructural characterization; mechanical properties; constitutive model; phase transformation; strengthening mechanisms; computational modeling
(This special issue belongs to the Section Crystalline Metals and Alloys)
Novel Functional Crystalline Materials for Energy Conversion and Sensing submission deadline 21 Jan 2027 | Viewed by 466 | Submission Open
Keywords: functional crystalline materials; energy conversion; sensing materials; photovoltaic and photocatalysis systems; thermoelectric and thermionic materials; piezoelectric crystals; crystal growth and design; low-dimensional crystalline systems; hybrid crystalline materials; computational materials science
(This special issue belongs to the Section Inorganic Crystalline Materials)
Key Crystal Materials for Optoelectronic Devices: Structure Regulation, Performance Optimization, and Device Applications
edited by Penghui He and
submission deadline 10 Feb 2027 | 1 articles | Viewed by 731 | Submission Open
Keywords: crystal growth and defect engineering; optoelectronic property tuning; structure–performance relationships; high-efficiency photonic devices; emerging crystalline materials
(This special issue belongs to the Section Inorganic Crystalline Materials)
Recent Research on Piezoelectric Ceramics
edited by Nengneng Luo, , Xudong Qi, Linjing Liu, and Kai Li
submission deadline 19 Feb 2027 | 2 articles | Viewed by 4063 | Submission Open
Keywords: piezoelectric ceramics; manufacture technologies; piezoelectricity; defect; grain
(This special issue belongs to the Section Polycrystalline Ceramics)
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