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 and Properties of Metals and Alloys
edited by Zhongquan Zhang, and Ze Chai
submission deadline 10 Nov 2025 | 7 articles | Viewed by 7441 | Submission Open
Keywords: metals/alloys; bulk materials; coatings; films; microstructure; phase; grain; interface; lattice; dislocation; vacancy; diffusion; mechanical property; strengthening; deformation; strain; electrical property; anti-corrosive property; magnetic property
(This special issue belongs to the Section Crystalline Metals and Alloys)
Research and Applications of Acoustic Metamaterials
edited by Qiujiao Du and
submission deadline 10 Nov 2025 | 4 articles | Viewed by 5287 | Submission Open
Keywords: acoustic metamaterial; seismic metamaterial; metasurface; noise and vibration isolation; topology; machine learning; nonlinearity; intelligent metamaterial; bound state in the continuum; cloaking
(This special issue belongs to the Section Inorganic Crystalline Materials)
Sustainable Heterogeneous Catalyst: From Structure to Application
edited by and
submission deadline 10 Nov 2025 | 1 articles | Viewed by 3502 | Submission Open
Keywords: heterogeneous catalyst; electrocatalysts; photocatalysts; thermal catalysts; green chemistry; structural-activity studies; biofuels platform molecules energy CO2 conversion
(This special issue belongs to the Section Materials for Energy Applications)
New Insights into Coating Materials: From Fundamentals to Material Performance
edited by Haibin Zhang
submission deadline 10 Nov 2025 | 2 articles | Viewed by 2731 | Submission Open
Keywords: coatings; coating materials; ceramic coatings; oxidation resistance; oxidation-protective coating; anti-corrosion coatings; metal surface properties; metal surface engineering; metal damage protection; surface modification; surface technology; wear-resistant; corrosion protection coating; composite coating; microstructure and performance; hardness; mechanical properties
(This special issue belongs to the Section Inorganic Crystalline Materials)
Recent Advances in Photocatalysts Materials
edited by Kristina Mojsilovic and
submission deadline 10 Nov 2025 | 2 articles | Viewed by 1700 | Submission Open
Keywords: photocatalysis; heterogeneous photocatalysis; hybrid materials; hydrogen evolution; titanium; aluminum; magnesium; scanning electron microscopy; X-ray diffraction; transport properties; UV lamp; solar spectrum; LDHs; MOFs; zeolites
(This special issue belongs to the Section Materials for Energy Applications)
Surface and Interface Engineering of Metal Oxides: From Atomic-Scale Design to Applications in Catalysis, Energy and Electronics
edited by Xuefeng Chu, Chao Wang and
submission deadline 10 Nov 2025 | Viewed by 106 | Submission Open
Keywords: metal oxides; surface and interface; atomic-scale synthesis; interfacial catalysis; advanced characterization; energy applications; structure-property relationships; design and engineering; computational material design
Advanced Surface Engineering Materials: Characterization and Properties (2nd Edition) submission deadline 15 Nov 2025 | 3 articles | Viewed by 3635 | Submission Open
Keywords: surface characterization; ultra-thin films; surface treatments; functionalized surface; SPM techniques
(This special issue belongs to the Section Inorganic Crystalline Materials)
Advances in New Multifunctional Hard Materials
edited by Tomas Soria-Biurrun, María de Nicolás Morillas, and
submission deadline 15 Nov 2025 | 2 articles | Viewed by 3163 | Submission Open
Keywords: alternative metallic binders; alternative ceramic phases; additive manufacturing; conventional proccesing; microstructural characterization; mechanical properties
(This special issue belongs to the Section Crystalline Metals and Alloys)
Innovations in Magnetic Composites: Synthesis to Application
edited by Izabella Crăciunescu
submission deadline 15 Nov 2025 | 3 articles | Viewed by 1465 | Submission Open
Keywords: magnetic nanomaterials; composites; hybrid nanostructures; magnetoresponsive systems; applications
Innovative Insights into Deformation and Failure of Metallic Alloys
edited by and Vasilis Karamitros
submission deadline 15 Nov 2025 | 1 articles | Viewed by 1362 | Submission Open
Keywords: high-entropy alloys (HEAs); additively manufactured alloys; microstructural characteristics; predictive modeling; extreme loading conditions
(This special issue belongs to the Section Crystalline Metals and Alloys)
Multifunctional Metal–Organic Frameworks (MOFs) at the Interface of Chemistry and Materials Science
edited by and Yanshu Shi
submission deadline 15 Nov 2025 | Viewed by 121 | Submission Open
Keywords: metal– organic framework; material discovery; adsorption; catalysis; crystallography; nanomaterial; sensing
(This special issue belongs to the Section Macromolecular Crystals)
Cutting-Edge Research in Plastic-Flexible Thermoelectric Materials
edited by Dongwang Yang
submission deadline 15 Nov 2025 | Viewed by 61 | Submission Open
Keywords: plastic-flexible thermoelectric materials; advanced fabrication; crystal architecture; microstructural engineering; electron– phonon– ion decoupling; machine learning
(This special issue belongs to the Section Materials for Energy Applications)
Recent Advances in III-Nitride Semiconductors and Correlated Wide Bandgap Semiconductors, 2nd Edition
edited by and
submission deadline 20 Nov 2025 | 9 articles | Viewed by 11588 | Submission Open
Keywords: nitrides; GaN; Ga2O3; NiO; diamond; AlScN; heterostructures; epitaxy; electro-optics devices; micro-electronics devices; power devices; integrated circuits and modules; photonic crystal enhanced light-matter interaction; photonic crystal and plasmonics
(This special issue belongs to the Section Materials for Energy Applications)
Advances in Nanocomposites: Structure, Properties and Applications
edited by , José Luis Casas-Espínola, Yazmin Mariela Hernández-Rodríguez and
submission deadline 20 Nov 2025 | 5 articles | Viewed by 5503 | Submission Open
Keywords: electron microscopy; nanostructured materials; nanocrystals; mechanical properties; functionalization; phase transition; applied nanomaterials; advanced characterization
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Structural Studies in Drug Discovery and Development: From the Lead to the Pharmaceutical Form, 2nd Edition submission deadline 20 Nov 2025 | 3 articles | Viewed by 2789 | 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)
Single-Crystalline Composite Materials (Second Edition) submission deadline 20 Nov 2025 | 1 articles | Viewed by 1966 | Submission Open
Keywords: single crystals; composites; crystallization; structural defects; testing methods
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
New Horizons in Metal–Organic Frameworks: Fundamentals, Characterization, and Molecular Modeling submission deadline 20 Nov 2025 | Viewed by 281 | Submission Open
Keywords: metal– ligand interactions; tunable properties; advanced materials; metal– organic frameworks; molecular modeling
(This special issue belongs to the Section Organic Crystalline Materials)
Research on the Preparation and Performance of Photocatalytic Materials
edited by Baoying Dai
submission deadline 20 Nov 2025 | Viewed by 196 | Submission Open
Keywords: photocatalytic technology and its application; photocatalytic hydrogen evolution; photocatalytic degradation; photocatalytic disinfection; photocatalytic therapy; photocatalytic carbon dioxide reduction; promoted carrier separation; controllable preparation; high reactive site exposure; increased solar light utilization efficiency
(This special issue belongs to the Section Materials for Energy Applications)
Crystaline TiO2 Nanotubes: From Production, Modification, to Innovative Applications
edited by
submission deadline 20 Nov 2025 | Viewed by 141 | Submission Open
Keywords: crystallization of TiO2 nanotubes; TiO2 nanotubes biomedical applications; TiO2 nanotubes in dye-sensitized solar cells; TiO2 nanotubes drug delivery systems; TiO2 nanotubes antibacterial agents; TiO2 nanotubes self-cleaning substrates
Advanced Alloys for Aggressive Environments: Challenges and Breakthroughs
edited by , Raquel Lopez and
submission deadline 25 Nov 2025 | 1 articles | Viewed by 932 | Submission Open
Keywords: metals; alloys; high-entropy alloys; metallic coating; additively manufactured alloys; microstructure; wear resistance; chemical stability; thermal stability; environmental durability; corrosion resistance; corrosion fatigue; high-temperature oxidation; mechanical properties; hardness testing; practical applications
(This special issue belongs to the Section Crystalline Metals and Alloys)
Optical Characterization of Functional Materials submission deadline 25 Nov 2025 | 1 articles | Viewed by 458 | Submission Open
Keywords: photonic materials; optical spectroscopy; Raman; ellipsometry; graphene; TiO2; terahertz spectroscopy; crystal growth; thin films; functional materials
(This special issue belongs to the Section Materials for Energy Applications)
Materials and Their Performance Characterization in Extreme Environments
edited by Ruzhuan Wang, Yi He and
submission deadline 25 Nov 2025 | Viewed by 200 | Submission Open
Keywords: failure mechanisms; multi-scale modeling; extreme environments; microstructure and macroscopic properties; design of high-performance advanced materials; advanced characterization techniques (including experimental and theoretical characterization)
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Solidification Processing of Metal Alloys Under External Fields
edited by , Yanchun Zhu, Jianfei Zhang, and
submission deadline 30 Nov 2025 | 1 articles | Viewed by 2185 | Submission Open
Keywords: solidification; external fields; material properties; microstructures; crystals; numerical simulation; alloys; microstructure characterization
(This special issue belongs to the Section Crystalline Metals and Alloys)
Advances in High-Performance Alloys
edited by Huihui Zhi, Cheng Wen and
submission deadline 30 Nov 2025 | 2 articles | Viewed by 1086 | Submission Open
Keywords: high-entropy alloys; steels and iron alloys; magnesium alloys; aluminum alloys; copper alloys; titanium alloys; mechanical properties; corrosion resistance properties; hydrogen embrittlement; characterization; machine learning
(This special issue belongs to the Section Crystalline Metals and Alloys)
Research on Electrolytes and Energy Storage Materials (2nd Edition)
edited by and Mengjie Chen
submission deadline 30 Nov 2025 | Viewed by 106 | Submission Open
Keywords: electrolytes; energy storage materials; batteries; supercapacitors; lithium-ion batteries; solid-state electrolytes; charge– discharge mechanisms; green technology; sustainable materials; next-generation energy storage
(This special issue belongs to the Section Materials for Energy Applications)
Research on Energy Storage Materials
edited by Feng Yu
submission deadline 8 Dec 2025 | Viewed by 131 | Submission Open
Keywords: aqueous batteries; supercapacitor; electrochemical energy storage; energy storage materials
Reviews of Crystal Engineering submission deadline 10 Dec 2025 | 6 articles | Viewed by 24703 | Submission Open
Keywords: inter- and intramolecular interactions; σ -hole and π -hole bonds; molecular crystals; cooperativity effects; structure motifs; molecular geometry; the correlation of parameters describing structures; substituent effects; structures of aromatic compounds; charge density analysis; comparison of various interactions
(This special issue belongs to the Section Crystal Engineering)
Development of Light Alloys and Their Applications
edited by , Gulshan Kumar and
submission deadline 10 Dec 2025 | 9 articles | Viewed by 10516 | Submission Open
Keywords: light alloys; aluminium alloys; magnesium alloys; titanium alloys; deformation behaviour; alloy and development; metallurgy; material characterization
(This special issue belongs to the Section Crystalline Metals and Alloys)
Research Progress of Photoluminescent Materials
edited by Lei Han
submission deadline 10 Dec 2025 | 4 articles | Viewed by 5334 | Submission Open
Keywords: photoluminescence; luminescent materials; optoelectronic devices; advanced photonic applications; optoelectronics and photonics
(This special issue belongs to the Section Inorganic Crystalline Materials)
Growth, Structural Identification, and Characterization of Semiconductor Alloys and Low-Dimensional Heterostructures
edited by
submission deadline 10 Dec 2025 | 2 articles | Viewed by 1663 | Submission Open
Keywords: epitaxial growth including (MBE; CVD; MOCVD; etc.); group-IV elemental semiconductors and alloys; III-V; III-N; II-VI; and IV-IV compound semiconductors and alloys; designing low-dimensional heterostructures (MQWs; SLs; etc.) for devices; IR; Raman scattering; photoluminescence; spectroscopic ellipsometry; characterization techniques; etc.; simulations of structural; electronic; vibrational; and thermal transport in MQWs and SLs
(This special issue belongs to the Section Crystalline Metals and Alloys)
Thermotropic Liquid Crystals as Novel Functional Materials submission deadline 10 Dec 2025 | Viewed by 390 | Submission Open
Keywords: synthesis; ferroelectrics; antiferroelectrics; structure-property relationship; investigation techniques; applications; computational modelling
(This special issue belongs to the Section Liquid Crystals)
Recent Advances in Graphene and Other Two-Dimensional Materials submission deadline 15 Dec 2025 | 7 articles | Viewed by 17625 | Submission Open
Keywords: two-dimensional materials; graphene; graphene oxide; transition metal dichalcogenides (TMDCs); graphene-based composites; 2D advanced devices and applications; functionalization of graphene; characterization techniques: electrical; electronic; optical; and mechanical properties
(This special issue belongs to the Section Inorganic Crystalline Materials)
Electronic Phenomena of Transition Metal Oxides Volume II
edited by Krzysztof Szot and
submission deadline 15 Dec 2025 | 5 articles | Viewed by 15845 | Submission Open
Keywords: metal– insulator transitions and superconductivity; atomistic processes at surfaces; interfaces; and extended defects; electronic structure and lattice dynamics; redox reactions and oxygen transport; segregation and phase transformations; multiferroic properties; machine learning for transition metal oxides design and discovery
(This special issue belongs to the Section Inorganic Crystalline Materials)
Corrosion Phenomena in Metals
edited by , , Mohammad Umar Farooq Khan and Ulises Martin Diaz
submission deadline 15 Dec 2025 | 8 articles | Viewed by 14045 | Submission Open
Keywords: stress corrosion cracking; environment-assisted cracking; localized corrosion; corrosion inhibitor; high-entropy alloys; additively manufactured alloys; transmission electron microscopy; potentiodynamic polarization test; high-temperature oxidation; nanocrystalline alloys; electrochemical impedance spectroscopy; secondary phases; metallic coating; immersion test; failure initiation and propagation mechanism; corrosion mitigation; semiconductive properties; passive film; modeling; service lifetime prediction
(This special issue belongs to the Section Crystalline Metals and Alloys)
Design, Development and Processing of Aluminium Alloys and Their Composite Materials
edited by Peng Tang, , Kang Wang and Xingzhi Pang
submission deadline 15 Dec 2025 | 11 articles | Viewed by 10794 | Submission Open
Keywords: aluminium matrix composite materials; composition; solidification; advanced characterization; phase composition– property correlation; recycled aluminium; green low-carbon aluminium alloy system research and development
(This special issue belongs to the Section Crystalline Metals and Alloys)
Crystal Plasticity (4th Edition)
edited by , Yub Raj Paudel and Hongjoo Rhee
submission deadline 15 Dec 2025 | 3 articles | Viewed by 2313 | Submission Open
Keywords: plasticity; computational methods; machine learning; texture evolution; microstructural mechanisms; thermomechanical processing; advanced manufacturing and metamaterials; process– structure– property relationships; metals; alloys; and intermetallics
(This special issue belongs to the Section Crystalline Metals and Alloys)
Recent Advances in Scintillator Materials
edited by
submission deadline 15 Dec 2025 | 1 articles | Viewed by 670 | Submission Open
Keywords: scintillators; crystals; films; ceramics; nanopowders; melt growth; liquid-phase epitaxy; and solid-state reactions; luminescence; energy transfer processes; defects; dopants
(This special issue belongs to the Section Inorganic Crystalline Materials)
Selected Papers from the 30th International Workshop on Industrial Crystallization (BIWIC 2025) on Crystals
edited by , , Na Wang and
submission deadline 15 Dec 2025 | Viewed by 164 | Submission Open
Keywords: industrial crystallization; crystallization technology; crystallization equipment; crystallization process control; crystallization process enhancement
(This special issue belongs to the Section Industrial Crystallization)
Crystallization and Purification
edited by Kangli Li, and Keke Zhang
submission deadline 20 Dec 2025 | 5 articles | Viewed by 13820 | Submission Open
Keywords: crystallization technology; separation and purification; polymorph regulation; crystal habit
(This special issue belongs to the Section Industrial Crystallization)
Organic Photonics: Organic Optical Functional Materials and Devices
edited by Yaoxing Bian, Xiaoyu Shi and Junhua Tong
submission deadline 20 Dec 2025 | 4 articles | Viewed by 8164 | 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)
Advanced Materials for Applications in Water Splitting
edited by Zhiyi Pan
submission deadline 20 Dec 2025 | 4 articles | Viewed by 5890 | Submission Open
Keywords: hydrogen energy; advanced electrocatalyst; water splitting; material design; structural characterization; simulated calculation; structure– activity relationship; mechanism
(This special issue belongs to the Section Materials for Energy Applications)
The Synthesis and Prospects of Magnetic Materials
edited by Jiayi He, Xuefeng Liao and Jiasheng Zhang
submission deadline 20 Dec 2025 | 3 articles | Viewed by 4373 | Submission Open
Keywords: magnetism; magnetic material; magnetic device; micromagnetic simulation; electromagnetic simulation; machine learning
(This special issue belongs to the Section Crystalline Metals and Alloys)
Recent Advances in Metal-Organic Frameworks: Synthesis, Characterization and Application
edited by Sumei Li
submission deadline 20 Dec 2025 | 2 articles | Viewed by 3751 | Submission Open
Keywords: metal organic framework; CO2 capture; adsorption; catalysis; sample preparation; sensors
(This special issue belongs to the Section Organic Crystalline Materials)
Electrode Materials in Lithium-Ion Batteries
edited by Zhongren Zhou
submission deadline 20 Dec 2025 | 2 articles | Viewed by 2332 | Submission Open
Keywords: lithium-ion battery; positive-electrode material; negative-electrode material; new electrode material; electrochemical performance; lithium storage performance; lithium iron phosphate; lithium nickel– manganese– cobalt oxide; silicon-based material; lithium manganese oxide; molten salt electrochemistry; solid waste resources recovery
(This special issue belongs to the Section Materials for Energy Applications)
Recent Research on Electronic Materials and Packaging Technology
edited by , Jinguo Ge and Jing Liu
submission deadline 20 Dec 2025 | 1 articles | Viewed by 1177 | Submission Open
Keywords: electronics packaging; advanced manufacturing techniques; crystalline materials; microstructure characterization; semiconductor crystals; thermal interface materials
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Growth and Properties of Photovoltaic Materials
edited by Mahmoud H. Hammouri and
submission deadline 20 Dec 2025 | 1 articles | Viewed by 1006 | Submission Open
Keywords: photovoltaic materials; solar energy; crystal growth; semiconductor properties; energy conversion
(This special issue belongs to the Section Materials for Energy Applications)
Nanoelectronics and Bioelectronics submission deadline 20 Dec 2025 | 1 articles | Viewed by 957 | Submission Open
Keywords: nano-biotechnology; nanoelectronics; nanofabrication; crystalline materials; biosensors; nanomedicine; nanotechnology; functional materials; materials synthesis; wearable sensors; medical diagnostics
Functional Acoustic Metamaterials
edited by
submission deadline 20 Dec 2025 | 1 articles | Viewed by 859 | Submission Open
Keywords: anisotropy; acoustic(s); metamaterial; metasurface; cloak; stealth; supersonic(s); ultrasonic(s); off-diagonal element
New Insights in Electro- and Photo-Catalytic Performance of Biomimetics Composites submission deadline 20 Dec 2025 | Viewed by 467 | Submission Open
Keywords: photoredox; wastewater treatment; metal– organic framework; electrochemical water splitting; hydrogen production; photocatalytic degradation; electrodes development; biomimetic composite; energy storage; self-cleaning materials
(This special issue belongs to the Section Organic Crystalline Materials)
Research Progress on Thermoelectric Materials
edited by and
submission deadline 20 Dec 2025 | Viewed by 167 | Submission Open
Keywords: thermoelectric material  ; thermoelectric efficiency; X-ray diffraction; electrical conductivity  ; Seebeck coefficient  ; thermal conductivity  ; ZT value; band gap; phonon engineering; microstructure  ; sustainable materials  ; energy harvesting
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