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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Liquid Crystal Materials and Devices
edited by , Quanming Chen, Changli Sun and Kun Yin
submission deadline 10 May 2025 | 4 articles | Viewed by 6809 | Submission Open
(This special issue belongs to the Section Liquid Crystals)
Recent Advances in the Structural and Optical Properties of Perovskite Quantum Dots
edited by Myeongkee Park
submission deadline 10 May 2025 | Viewed by 200 | Submission Open
Keywords: perovskite; perovskite quantum dot; perovskite solar cells; optical properties; characterization of material structure
(This special issue belongs to the Section Inorganic Crystalline Materials)
Research Progress of Optical Fibers
edited by and
submission deadline 15 May 2025 | Viewed by 204 | Submission Open
Keywords: crystalline fibers; crystal-derived fibers; glass fibers; fiber sensing; fiber lasers; fiber processing
(This special issue belongs to the Section Inorganic Crystalline Materials)
Perovskite-Based Light-Emitting Devices
edited by Heyong Wang and
submission deadline 15 May 2025 | Viewed by 201 | Submission Open
Keywords: perovskites; optoelectronic; emission; device; photophysics
(This special issue belongs to the Section Inorganic Crystalline Materials)
Advances in Metal Matrix Composites: Structure, Properties and Applications submission deadline 20 May 2025 | 8 articles | Viewed by 18397 | Submission Open
Keywords: metal matrix composites; microstructure; mechanical properties; wear; thermophysical properties; electrical properties; applications
(This special issue belongs to the Section Crystalline Metals and Alloys)
Structure and Properties of Ceramic Materials
edited by Andrzej Kruk and Dorota Sitko
submission deadline 20 May 2025 | 4 articles | Viewed by 4651 | Submission Open
Keywords: magnetooptical properties; density; microstructure; luminescence; spectroscopy
(This special issue belongs to the Section Polycrystalline Ceramics)
Research and Applications of Light-Emitting Diodes
edited by , Beibei Xu, Zaifa Du and
submission deadline 20 May 2025 | 1 articles | Viewed by 3392 | Submission Open
Keywords: LEDs; lighting; displays; AR/VR; eye-tracking; color conversion materials
(This special issue belongs to the Section Materials for Energy Applications)
Research and Applications of Acoustic Metamaterials
edited by Qiujiao Du and
submission deadline 20 May 2025 | 3 articles | Viewed by 2707 | 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)
Advances in Nanocomposites: Structure, Properties and Applications
edited by , José Luis Casas-Espínola, Yazmin Mariela Hernández-Rodríguez and
submission deadline 20 May 2025 | 3 articles | Viewed by 2080 | 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)
Solidification Processing of Metal Alloys Under External Fields
edited by , Yanchun Zhu, Jianfei Zhang, and
submission deadline 20 May 2025 | 1 articles | Viewed by 1835 | 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)
Syntheses, Characterizations and Reactivities of Heterogeneous Catalysts: From Fundamentals to Materials
edited by , Xiao Zhao and Chunyan Shang
submission deadline 20 May 2025 | 1 articles | Viewed by 1664 | Submission Open
Keywords: catalyst design; heterogeneous catalysis; interfacial microenvironment; regulation of catalytic active centers; reaction kinetics; in situ techniques; theoretical studies
(This special issue belongs to the Section Materials for Energy Applications)
Solidification and Crystallization of Inorganic Materials
edited by Xinyu Yang, Shifeng Luo and Yan Wang
submission deadline 20 May 2025 | 2 articles | Viewed by 1251 | Submission Open
Keywords: crystallization process; nucleation mechanisms; crystal growth; crystal structure; morphology
(This special issue belongs to the Section Inorganic Crystalline Materials)
Growth and Properties of Photovoltaic Materials
edited by Mahmoud H. Hammouri and
submission deadline 20 May 2025 | 1 articles | Viewed by 623 | Submission Open
Keywords: photovoltaic materials; solar energy; crystal growth; semiconductor properties; energy 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 20 May 2025 | 1 articles | Viewed by 539 | 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)
New Insights in Electro- and Photo-Catalytic Performance of Biomimetics Composites submission deadline 20 May 2025 | Viewed by 408 | 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)
Structure and Properties of Piezoelectric Single Crystals
edited by Chengpeng Hu
submission deadline 20 May 2025 | Viewed by 346 | Submission Open
Keywords: structural characterization; dielectric properties; piezoelectric properties; ferroelectric properties; Raman analysis; actuators; piezoelectric analysis based on defect theory; thermodynamic and kinetic studies of piezoelectric; including theory; experiment; modeling; and simulation; X-ray diffraction; including the rocking curve
(This special issue belongs to the Section Polycrystalline Ceramics)
Molecular Simulations and Dynamics Analysis of Polymers submission deadline 20 May 2025 | Viewed by 337 | Submission Open
Keywords: molecular simulations; polymer dynamics; computational chemistry; molecular dynamics; polymer conformation; monte carlo simulations; polymer materials; phase behavior; thermal transitions; materials science
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
New Magnetic Films for Novel Applications
edited by Rui Sun and Xubo Liu
submission deadline 20 May 2025 | Viewed by 206 | Submission Open
Keywords: magnetic thin films; magnetization dynamics; magnons; skyrmions; two-dimensional magnets; altermagnetism; chirality-induced spin selectivity; spin-torque-induced magnetization switching; spintronic terahertz emission; acoustic pumping
(This special issue belongs to the Section Inorganic Crystalline Materials)
Preparation and Applications of High-Entropy Materials
edited by Bin Liu
submission deadline 22 May 2025 | 3 articles | Viewed by 2672 | Submission Open
Keywords: high-entropy alloys; high-entropy materials; entropy; composition design; preparation methods; microstructure; structures and properties; structural materials; functional applications
(This special issue belongs to the Section Crystalline Metals and Alloys)
Preparation and Characterization of Optoelectronic Functional Films
edited by Liangyao Chen
submission deadline 25 May 2025 | 8 articles | Viewed by 13226 | Submission Open
Keywords: functional materials; optical properties; composed material; metamaterials; metals and alloys
Microstructure and Deformation of Advanced Alloys submission deadline 29 May 2025 | 18 articles | Viewed by 29466 | 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)
Thermotropic Liquid Crystals as Novel Functional Materials submission deadline 29 May 2025 | Viewed by 256 | Submission Open
Keywords: synthesis; ferroelectrics; antiferroelectrics; structure-property relationship; investigation techniques; applications; computational modelling
(This special issue belongs to the Section Liquid Crystals)
Laser Surface Modification of Materials
edited by and
submission deadline 30 May 2025 | 3 articles | Viewed by 10580 | Submission Open
Keywords: laser surface modification; functional surface; surface microstructure; surface chemistry; surface roughness; surface characterization; laser– material interaction mechanism; wettability; optical property; corrosion; abrasion; mechanical property
(This special issue belongs to the Section Crystalline Metals and Alloys)
Crystallization Process and Simulation Calculation, Third Edition
edited by , , Kangli Li, Mengmeng Sun and Yu Liu
submission deadline 30 May 2025 | 7 articles | Viewed by 7149 | Submission Open
Keywords: nucleation and growth; agglomeration and breakage; process analytical technology; process intensification; continuous crystallization; spherical crystallization; co-crystallization; molecular dynamics simulation; hydrodynamics simulation
(This special issue belongs to the Section Industrial Crystallization)
Superconductors and Magnetic Materials
edited by , Elkin Ferney Rodriguez Velandia and
submission deadline 31 May 2025 | 5 articles | Viewed by 7435 | Submission Open
Keywords: high-electromagnetic-power density materials; superconductor compounds and nanomaterials; permanent magnets; high magnetic permeability materials; strong magnets; magnetic levitation or propulsion; magnetic shielding  ; magnetic resonance; magnetic particle acceleration or collision; magnetic confinement fusion; superconducting magnetic energy storage; rare-earth free magnetic materials; superconducting quantum interference devices; high-sensing magnetic-field detection
(This special issue belongs to the Section Inorganic Crystalline Materials)
Structural Studies in Drug Discovery and Development: From the Lead to the Pharmaceutical Form, 2nd Edition submission deadline 31 May 2025 | 2 articles | Viewed by 1695 | 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)
Synthesis and Crystal Structure of Rare-Earth Metal Compounds
edited by
submission deadline 31 May 2025 | 1 articles | Viewed by 1478 | Submission Open
Keywords: synthesis; crystal structure; luminescence; magnetism; catalysts; optical properties
Advances in Topological Metamaterials and Devices
edited by Dongyang Wang and Quanlong Yang
submission deadline 31 May 2025 | Viewed by 149 | Submission Open
Keywords: topological metamaterials; membrane devices; photonic crystals; silicon photonics; non-Hermitian physics; polarization singularity
Liquid Crystal Photonics and Emerging Displays
edited by , , Man-Chun Tseng, Fion Sze Yan Yeung and
submission deadline 1 Jun 2025 | 1 articles | Viewed by 1281 | Submission Open
Keywords: liquid crystal photonics; liquid crystal displays; display technology; liquid crystal application; display application
(This special issue belongs to the Section Liquid Crystals)
Advances in Liquid Crystal Dimers and Oligomers
edited by Sergio Diez Berart and Jordi Sellarés
submission deadline 10 Jun 2025 | 2 articles | Viewed by 3916 | Submission Open
Keywords: liquid crystal (LC) dimers; LC oligomers; design; synthesis; simulations; theory; physical characterization; twist-bend nematic; applications
(This special issue belongs to the Section Liquid Crystals)
Hybrid Materials for Energy Storage and Conversion submission deadline 10 Jun 2025 | 2 articles | Viewed by 2830 | Submission Open
Keywords: hybrid structure; materials engineering; pH; electrochemical  ; energy storage
(This special issue belongs to the Section Materials for Energy Applications)
Crystal Plasticity (4th Edition)
edited by , Yub Raj Paudel and Hongjoo Rhee
submission deadline 10 Jun 2025 | 2 articles | Viewed by 1116 | 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)
Electrode Materials in Lithium-Ion Batteries
edited by Zhongren Zhou
submission deadline 10 Jun 2025 | 2 articles | Viewed by 941 | 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)
Crystallization and Purification
edited by Kangli Li, and Keke Zhang
submission deadline 15 Jun 2025 | 4 articles | Viewed by 7958 | Submission Open
Keywords: crystallization technology; separation and purification; polymorph regulation; crystal habit
(This special issue belongs to the Section Industrial Crystallization)
Polycrystalline Materials—from Microstructure Characterization to Applications submission deadline 15 Jun 2025 | 3 articles | Viewed by 4704 | Submission Open
Keywords: polycrystalline materials; microstructural analysis; polycrystalline thin films; solvothermal synthesis; mechanism; model; performance characterization; preparation methods; porous materials; magnetic materials; covalent organometallic frameworks; post-synthesis of porous materials; morphology tuning; processing of polycrystalline materials; high surface area materials; supramolecular interactions; metal– organic frameworks (MOFs); layered materials; polymers
Development of Light Alloys and Their Applications
edited by Hua Qian Ang, Gulshan Kumar and
submission deadline 15 Jun 2025 | 5 articles | Viewed by 4190 | 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)
Crystalline Materials for Radiation Detection: A New Perspective (2nd Edition)
edited by
submission deadline 15 Jun 2025 | 1 articles | Viewed by 593 | Submission Open
Keywords: crystalline materials; semiconductor devices; radiation detectors; radiation induced defects; wide-band gap semiconductors (GaN; SiC; etc.); modeling; first-principles calculations; radiation hardness
(This special issue belongs to the Section Inorganic Crystalline Materials)
Novel Electrocatalyst Materials for the Production of Green Hydrogen by Ammonia and Seawater Electrolysis
edited by Bogusław Pierozyński
submission deadline 18 Jun 2025 | Viewed by 134 | Submission Open
Keywords: seawater electrolysis; electrocatalysts; ammonia electrolysis
Corrosion Phenomena in Metals
edited by , Rajeev Gupta, Mohammad Umar Farooq Khan and Ulises Martin Diaz
submission deadline 20 Jun 2025 | 7 articles | Viewed by 10868 | 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)
Advances in Processing, Simulation and Characterization of Alloys submission deadline 20 Jun 2025 | 9 articles | Viewed by 8775 | Submission Open
Keywords: process optimization; mechanical properties; microstructures; microstructural characterization; alloy design; modeling and simulation; heat treatments; finite element analysis (FEA); phase transformations
(This special issue belongs to the Section Crystalline Metals and Alloys)
Research on REBCO Films and Conductors submission deadline 20 Jun 2025 | 4 articles | Viewed by 8088 | Submission Open
Keywords: thin films; superconductor; REBCO compounds; sol– gel; chemical solution deposition (CSD); nanoparticles; pinning; nanocomposites; transport properties; magnetic properties.
X-Ray Protein Crystallography
edited by
submission deadline 20 Jun 2025 | 4 articles | Viewed by 6827 | Submission Open
Keywords: protein crystallography; X-ray crystallography; serial crystallography; structure determination; crys-tallization; data processing; radiation damage
(This special issue belongs to the Section Macromolecular Crystals)
Recent Advances in Microstructure and Properties of Metals and Alloys submission deadline 20 Jun 2025 | 8 articles | Viewed by 6793 | Submission Open
Keywords: microstructure characterization; phase transformations; material properties; mechanical properties; corrosion resistance; manufacturing technology
(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 20 Jun 2025 | 7 articles | Viewed by 5829 | 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)
Advanced Research of Electroceramics for Energy Conversion, Storage and Devices
edited by , , and Sílvia Soreto Teixeira
submission deadline 20 Jun 2025 | 2 articles | Viewed by 4347 | Submission Open
Keywords: electroceramics; synthesis processes; structural characterization; morphological characterization; dielectric properties; magnetic properties; piezoelectric properties; energy conversion; energy storage
(This special issue belongs to the Section Materials for Energy Applications)
Advances in Nanomaterials and Nanocomposites for Catalytic Applications
edited by
submission deadline 20 Jun 2025 | 4 articles | Viewed by 3415 | Submission Open
Keywords: nanomaterials; nanocomposites; nanocatalysts; catalytic performance; pollutant degradation; energy
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
Advanced Materials for Applications in Water Splitting
edited by Zhiyi Pan
submission deadline 20 Jun 2025 | 4 articles | Viewed by 3349 | 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)
Recent Advances in Metal-Organic Frameworks: Synthesis, Characterization and Application
edited by Sumei Li
submission deadline 20 Jun 2025 | 2 articles | Viewed by 3113 | Submission Open
Keywords: metal organic framework; CO2 capture; adsorption; catalysis; sample preparation; sensors
(This special issue belongs to the Section Organic Crystalline Materials)
Advances in Thermochromic Liquid Crystals and Functional Colour-Changing Materials submission deadline 20 Jun 2025 | 2 articles | Viewed by 2458 | Submission Open
Keywords: thermochromic liquid crystals (TLCS); leuco dyes; functional colour-changing materials; photochromic systems; electrochromic systems; piezochromic materials; smart packaging; temperature sensors; sensing technologies; responsive materials; optical properties
(This special issue belongs to the Section Liquid Crystals)
Advances in Multifunctional Materials and Structures submission deadline 20 Jun 2025 | 3 articles | Viewed by 2213 | Submission Open
Keywords: multi-phase intermetallic alloys; surface and interface engineering to improve the materials’ performance; novel coatings for enhancing the performance of metals; biocompatible and biodegradable materials; Fe-; Mg-; Ti-; Cu-; Co-; Al-; Zn-based intermetallic alloys; microstructure characterization (OM; SEM; XRD); surface interface characterization; mechanical properties; crystalline structures; phase transformations; and the interplay between microstructure and macroscopic properties; corrosion resistance and electrochemical analysis; in vivo and in vitro studies; osseointegration and cell studies; high biocompatibility for medical applications; thermal analysis; heat treatments; the relationship between structure; properties; and materials applications
(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)
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