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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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Synthesis, Crystal Structures, and Biological Activities of Transition Metal Complexes

edited by Dušan Dimić

submission deadline 30 Aug 2025 | 1 articles | Viewed by 980 | Submission Open

Keywords: transition metal complexes; DFT; QTAIM; cytotoxicity; antioxidant activity; protein binding affinity; crystal structures; NMR; IR

(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)

Polymorphism and Phase Transitions in Crystal Materials

edited by

Łukasz Szeleszczuk

submission deadline 30 Aug 2025 | Viewed by 224 | Submission Open

Keywords: polymorph; polymorphism; phase transition; form change; crystal; cocrystal; solid; pharmaceutical; solid state

(This special issue belongs to the Section Crystal Engineering)

Deformation and Degradation Behavior of Alloys and Structural Materials

edited by Zachary Norris Buck, James Robert Torres and

Umberto Prisco

submission deadline 30 Aug 2025 | Viewed by 84 | Submission Open

Keywords: deformation mechanisms; fatigue and fracture; microstructure characterization; residual stress; alloy design; embrittlement; corrosion; phase transformation; additive manufacturing; X-ray and neutron scattering; mitigation

(This special issue belongs to the Section Crystalline Metals and Alloys)

Young Crystallographers Across Europe

edited by

Benny Danilo Belviso

and

Mattia Lopresti

submission deadline 31 Aug 2025 | 8 articles | Viewed by 13704 | Submission Open

Keywords: young crystallographers; crystallography; structural investigation

Metal Oxides: Crystal Structure, Synthesis and Characterization (2nd Edition)

edited by

Karolina Siedliska

Kamila Komędera

and

Raffaello Mazzaro

submission deadline 31 Aug 2025 | 7 articles | Viewed by 4924 | Submission Open

Keywords: metal oxides; material characterization; synthesis; crystal structure; nanomaterials; applications

(This special issue belongs to the Section Inorganic Crystalline Materials)

Advanced Research of Graphene Oxide-Based Materials for Catalysis

edited by

Laroussi Chaabane

and Ivalina Trendafilova

submission deadline 31 Aug 2025 | Viewed by 665 | Submission Open

Keywords: synthesis or growth of graphene-based materials; characterization of graphene-based materials; theoretical models; graphene-based materials in energy applications; graphene-based materials in catalysis

(This special issue belongs to the Section Inorganic Crystalline Materials)

Synthesis, Structure and Application of Metal Halides

edited by Bo Zhang

submission deadline 31 Aug 2025 | 1 articles | Viewed by 350 | Submission Open

Keywords: X-ray diffraction analysis; structural assembly; structure– activity relationship; semiconductor property; theoretical research; catalysis

(This special issue belongs to the Section Inorganic Crystalline Materials)

Advances of High Entropy Alloys (2nd Edition)

edited by

Long Meng

and

Xiaoming Sun

submission deadline 31 Aug 2025 | 1 articles | Viewed by 329 | Submission Open

Keywords: high entropy alloys; corrosion-resistant properties; mechanical properties; microstructures; anti-oxidation properties; passivation properties; electrochemical properties

(This special issue belongs to the Section Crystalline Metals and Alloys)

Crystalline Materials in Electrochemistry

edited by Weiqiang Lv, Zhixiao Xu and Wenjing Deng

submission deadline 31 Aug 2025 | Viewed by 67 | Submission Open

Keywords: crystalline materials; organic materials; inorganic materials; batteries; supercapacitors; electrocatalysis; intercalation chemistry; in situ/operando characterization

(This special issue belongs to the Section Materials for Energy Applications)

Research in Compounds, Materials, Reactors and Processes for Thermochemical Energy Storage

edited by

Sandra Afflerbach

and

Reinhard Trettin

submission deadline 5 Sep 2025 | Viewed by 62 | Submission Open

Keywords: sensible storage materials; latent storage materials; thermochemical storage materials; material screening; reaction mechanisms; structure- and process-related materials properties; thermochemical and thermophysical materials properties (re-)crystallization; crystal morphology; defect structures and doping

(This special issue belongs to the Section Materials for Energy Applications)

Advances in Microstructure and Plastic Deformation of High-Strength Steels

edited by

Wojciech Borek

submission deadline 10 Sep 2025 | 3 articles | Viewed by 3674 | Submission Open

Keywords: microstructure of high-strength steels; hot working; cold working; plastic deformation; innovative methodology research; new technologies; thermomechanical treatment; physical and numerical simulation of plastic deformation; structure simulation after plastic deformation; structure and mechanical properties.

(This special issue belongs to the Section Crystalline Metals and Alloys)

Research and Applications of Thin Films and Energy Materials

edited by Chanwook Jeon and Pritam J. Morankar

submission deadline 10 Sep 2025 | 1 articles | Viewed by 1522 | Submission Open

Keywords: thin films; energy materials; electrochromic materials; supercapacitors; battery materials; 2D materials; metal oxides; composite materials; surface engineering; energy conversion; energy storage

(This special issue belongs to the Section Materials for Energy Applications)

Electrically Active Defects: Studied by Junction Spectroscopy Techniques

edited by Ivana Capan

submission deadline 10 Sep 2025 | 1 articles | Viewed by 1177 | Submission Open

Keywords: defects; deep levels; transient spectroscopy; semiconductors; Si; Ge; SiC; GaN; Ga2O3

(This special issue belongs to the Section Inorganic Crystalline Materials)

Crystalline Materials for Energy Conversion Applications in Solar Cells

edited by Eros Radicchi and Francesca Lo Presti

submission deadline 10 Sep 2025 | 2 articles | Viewed by 985 | Submission Open

Keywords: solar cells; up-conversion; down-conversion; down-shifting; cystalline materials

(This special issue belongs to the Section Materials for Energy Applications)

Microstructure and Characterization of Crystalline Materials

edited by

Wenqi Guo

Yankun Dou

and

Krzysztof Zaba

submission deadline 10 Sep 2025 | 1 articles | Viewed by 439 | 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)

Microstructure and Reliability of Electronic Packaging Materials

edited by Shuibao Liang, Wangyun Li and

Ching-Cherng Sun

submission deadline 10 Sep 2025 | Viewed by 67 | Submission Open

Keywords: electronic packaging; heterogeneous integration; solder interconnect; liquid metal; power electronics; integrated circuit; bonding; sintering; reliability; electromigration; thermomigration; mechanical behavior

Research on Low-Dimensional Quantum Materials

edited by Km Rubi and

Fei Gao

submission deadline 10 Sep 2025 | Viewed by 50 | Submission Open

Keywords: 2D material; quantum dot; nanowire; 2D electron gas; quantum confinement; quantum hall effect; superconductivity; graphene; 2D MXenes; transition metal dichalcogenides; electronic bandstructure; magnetism; photonics

Hybrid Organic–Inorganic Materials Used to Improve the Environment and Human Health (2nd Edition)

edited by

Radu Claudiu Fierascu

and

Florentina Monica Raduly

submission deadline 15 Sep 2025 | 3 articles | Viewed by 5216 | Submission Open

(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)

Synthesis and Characterization of Oxide Nanoparticles

edited by

Adriana-Gabriela Schiopu

and

Laura Madalina Cursaru

submission deadline 15 Sep 2025 | 3 articles | Viewed by 5053 | Submission Open

Keywords: oxide nanoparticles elaboration; emerging nanostructured materials; morphostructural characterization of nanoparticles; optical applications of nanoparticles; nanostructured thin films; antibacterial properties

(This special issue belongs to the Section Inorganic Crystalline Materials)

New Insights into Optical Crystals: From Fundamentals to Materials Performance

edited by Conggang Li and

Youngpak Lee

submission deadline 15 Sep 2025 | 1 articles | Viewed by 678 | Submission Open

Keywords: material design; optical crystals; synthesis methods; crystal growth; optical properties; structure– properties relationship

(This special issue belongs to the Section Materials for Energy Applications)

Synthesis, Characterizations and Applications of Atomically Precise Nanomaterials

edited by

Haixiang Han

and Longlong Geng

submission deadline 15 Sep 2025 | Viewed by 285 | Submission Open

Keywords: nanoclusters; nanostructures; catalysis; single crystal X-ray diffraction; crystal growth

(This special issue belongs to the Section Crystal Engineering)

Applications and Innovations in Electroceramics

edited by

Suresh Kumar Jakka

and

João Paulo Costa Do Nascimento

submission deadline 15 Sep 2025 | Viewed by 233 | Submission Open

Keywords: ceramic materials; dielectric properties; solid state reaction; complex impedance spectroscopy; numerical simulation; composites; luminescence properties

(This special issue belongs to the Section Polycrystalline Ceramics)

Research Progress of Eutectic Alloys

edited by

Yong Dong

and Chuanqiang Li

submission deadline 15 Sep 2025 | Viewed by 155 | Submission Open

Keywords: eutectic alloys; microstructure; alloy design; solidification mechanism; mechanical properties

(This special issue belongs to the Section Crystalline Metals and Alloys)

Advanced Research in 2D Materials

edited by

Bosong Sun

and

Kwun Nam Hui

submission deadline 20 Sep 2025 | 3 articles | Viewed by 4269 | Submission Open

Keywords: synthesis and fabrication of 2D materials; characterization and properties of 2D materials; applications involving 2D materials; theories involving 2D materials; machine learning involving 2D materials

(This special issue belongs to the Section Inorganic Crystalline Materials)

Catalysts and Modeling of Ammonia Synthesis Catalytic Reactions

edited by Constantinos D. Zeinalipour-Yazdi

submission deadline 20 Sep 2025 | 2 articles | Viewed by 4020 | Submission Open

Keywords: ammonia synthesis; mechanism; DFT; screening; catalysis

(This special issue belongs to the Section Inorganic Crystalline Materials)

Synthesis, Crystal Structures and Hirshfeld Surface Analysis of Coordination Compounds (3rd Edition)

edited by

Waldemar Maniukiewicz

submission deadline 20 Sep 2025 | 2 articles | Viewed by 3925 | 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)

Porous Ceramics and Their Composite Materials

edited by

Chengying Bai

Hamada Elsayed

and Xinxin Jin

submission deadline 20 Sep 2025 | 1 articles | Viewed by 2533 | Submission Open

Keywords: porous ceramics and composites; lightweight ceramics; porous geopolymer; ceramics for water purification; 3D-printed porous ceramics; sustainable ceramics derived from solid wastes; glass ceramic foams

(This special issue belongs to the Section Polycrystalline Ceramics)

Microstructure Evolution and Mechanical Properties of Steels

edited by

Lei Wang

and

Kehong Wang

submission deadline 20 Sep 2025 | 2 articles | Viewed by 2101 | Submission Open

Keywords: steel; microstructure; materials characterization; mechanical Properties; additive manufacturing; welding; casting; numerical simulation

(This special issue belongs to the Section Crystalline Metals and Alloys)

Materials for Applications in Water Splitting and Battery

edited by Xiaoyong Yang and Weiwei Pang

submission deadline 20 Sep 2025 | 1 articles | Viewed by 1298 | Submission Open

Keywords: low-dimensional materials; nanocrystals; nanocage; sustainable materials; emerging functional nanomaterials; heterostructures; energy storage and conversion; battery research; electrode– electrolyte interfaces; high-energy electrode materials; material design; photoelectrochemical water splitting

(This special issue belongs to the Section Materials for Energy Applications)

Fatigue and Fracture of Welded Structures

edited by Zheng Liu, Hang Liang and

Xin Wang

submission deadline 20 Sep 2025 | 1 articles | Viewed by 648 | Submission Open

Keywords: welding technology; welding evaluation; fracture mechanics; fatigue crack propagation; fatigue; fracture toughness test; size effect; failure analysis; fatigue damage mechanism; digital image correlation method; stress– strain response; structural engineering; finite element analysis; engineering metallic materials; deformation analysis; multiscale simulation; microscopic characterization; life prediction

(This special issue belongs to the Section Crystalline Metals and Alloys)

Structure and Elemental Variations in Metals

edited by

Yanhui Chen

and

Heinz-Günter Brokmeier

submission deadline 20 Sep 2025 | 1 articles | Viewed by 230 | Submission Open

Keywords: metal; element; EDS; distribution; microstructure

(This special issue belongs to the Section Crystalline Metals and Alloys)

Thermal and Thermo-Oxidative Decomposition of Polymers and Polymer Blends

edited by

Sergejs Gaidukovs

submission deadline 20 Sep 2025 | Viewed by 145 | Submission Open

Keywords: polymers; polymer blends; thermal properties; decomposition

(This special issue belongs to the Section Hybrid and Composite Crystalline Materials)

Raman Laser Technology of Crystals

edited by

Shibo Dai

and Haiyong Zhu

submission deadline 20 Sep 2025 | Viewed by 110 | Submission Open

Keywords: Raman crystals; crystalline Raman laser; Raman effect; Raman spectroscopy; Raman generator; material characterization; crystalline Raman materials; second-harmonic generation or sum-frequency generation of crystalline Raman laser

(This special issue belongs to the Section Inorganic Crystalline Materials)

Recent Advances in Scintillator Materials

edited by

Yuriy Zorenko

submission deadline 20 Sep 2025 | Viewed by 103 | 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)

Microstructure and Mechanical Properties of Alloys and Composites

edited by Qingchun Zhu and

Nikolai Zarkevich

submission deadline 22 Sep 2025 | 2 articles | Viewed by 578 | Submission Open

Keywords: mechanical properties; microstructure; alloying elements; alloys; composite materials

(This special issue belongs to the Section Crystalline Metals and Alloys)

Preparation and Characterization of Precipitates in Magnesium Alloys

edited by Yangxin Li

submission deadline 25 Sep 2025 | 1 articles | Viewed by 660 | Submission Open

Keywords: magnesium alloys; precipitates; morphology; crystallography; advanced characterization; properties

(This special issue belongs to the Section Crystalline Metals and Alloys)

Advanced Technologies for Protein Crystal Optimization and Delivery of Protein Crystals

edited by

Christian Betzel

and Hévila Brognaro

submission deadline 25 Sep 2025 | Viewed by 386 | Submission Open

Keywords: distinct crystals growth; in-vivo crystallization; crystal nucleation and liquid dense protein clusters; crystal growth for neutron diffraction; external electrical and magnetic fields; microgravity crystallization; mass transport in crystallization; in situ analysis of crystals; in situ optimization of crystals; physicochemical characterization of crystals; scoring crystal suspensions; instrument and software development; crystal delivery for XFEL and synchrotron radiation sources

(This special issue belongs to the Section Biomolecular Crystals)

Multi-Component Hybrid and Composite Nanostructures for Healthcare Applications

edited by

Yury Ryabchikov

submission deadline 25 Sep 2025 | Viewed by 43 | Submission Open

Keywords: multi-component (nano-)structures; inorganic/organic (nano-)structures; synthesis and characterization; healthcare applications

Synthesis of Lithium Metal Battery Materials

edited by Yuanjian Li

submission deadline 26 Sep 2025 | Viewed by 60 | Submission Open

Keywords: lithium metal batteries; lithium composite electrodes; lithium alloy anodes; functional separators; solid-state electrolytes; battery material synthesis

Crystallography of Enzymes

edited by

Bo Liang

and

Houfu Guo

submission deadline 30 Sep 2025 | 6 articles | Viewed by 9777 | Submission Open

Keywords: enzyme; structure; function; X-ray crystallography; crystal; crystallization; catalytic mechanism; antagonist

(This special issue belongs to the Section Biomolecular Crystals)

Special Issue of the Professional Committee of Key Materials and Technology for Electronic Components (PC-KMTEC)

edited by Feng Shi,

, Guangzu Zhang,

and

submission deadline 30 Sep 2025 | 2 articles | Viewed by 3869 | Submission Open

Keywords: microwave dielectric ceramics; ferroelectric ceramics; piezoelectric ceramics; thermoelectric ceramics; pyroelectric ceramics; sensitive ceramics; transparent ceramics

(This special issue belongs to the Section Polycrystalline Ceramics)

State-of-the-Art Liquid Crystals Research in Japan (2nd Edition)

edited by

Shigeyuki Yamada

Mizuho Kondo

and

Kosuke Kaneko

submission deadline 30 Sep 2025 | Viewed by 376 | Submission Open

Keywords: liquid crystals; blue phase; stimulus responsiveness; photoalignment control; molecular dynamics simulations; rheology; X-ray diffraction; luminescence; electrical conductivity

(This special issue belongs to the Section Liquid Crystals)

High-Tech Metals—Overview, Microstructure, Properties and Recyclability (2nd Edition)

edited by

Christiane Scharf

and

Marek Sroka

submission deadline 30 Sep 2025 | Viewed by 350 | Submission Open

Keywords: high-tech metals; microstructure; properties; material characterization; winning; recyclability

Advanced Surface Modifications on Materials (2nd Edition)

edited by

Mahmoud Moradi

Mohammad Rezayat

and Rasoul Khandan

submission deadline 30 Sep 2025 | Viewed by 165 | Submission Open

Keywords: surface modifications; advanced surface techniques; materials surface engineering; surface properties; laser surface modification; laser surface coating

Bioprocessing-Inspired Fabrication of Materials

edited by

Kun Wang

submission deadline 30 Sep 2025 | Viewed by 132 | Submission Open

Keywords: bioprocessing-inspired fabrication; bioprocessing-inspired synthesis; structures and functions; biomineralization-inspired; photosynthesis-inspired; additive manufacturing; microscale additive manufacturing; nanoscale additive manufacturing; bioinspired materials; biostructures; bioproperties and bioperformance; enamel-like nanocomposites; calcium-based minerals; biomineralization of collagen fibrils; kinetics of mineral deposition; artificial mineralization; natural living organism-directed synthesis; protein- or organism-induced synthesis; physiological processes

(This special issue belongs to the Section Mineralogical Crystallography and Biomineralization)

Advances in New Composite Insulating Materials: Crystal Structure, Properties, and Applications

edited by Mojia Huang, Zhiwen Lan and

Tengfei Zhao

submission deadline 30 Sep 2025 | Viewed by 103 | Submission Open

Keywords: energy consumption; composite insulation materials; new structures; thermal and mechanical characteristics; energy efficiency; mechanical properties; construction industry

(This special issue belongs to the Section Materials for Energy Applications)

Advancements in Wide and Ultra Wide Bandgap Semiconductor Devices for RF and Power Applications

edited by Abdelaziz Rabehi and

Dmitri Donetski

submission deadline 30 Sep 2025 | Viewed by 51 | Submission Open

Keywords: wide bandgap semiconductors; RF transistors; power electronics; GaN devices; SiC transistors; Ga2O3 devices; diamond transistors; 5G and 6G communication; power conversion; electric vehicles; smart grids; device reliability; energy efficiency

(This special issue belongs to the Section Materials for Energy Applications)

Pharmaceutical and Biotechnological Applications of Protein Crystals

edited by

Fiora Artusio

and

José Gavira

submission deadline 10 Oct 2025 | Viewed by 422 | Submission Open

Keywords: protein crystallisation; drug discovery; drug design; drug delivery; crystallography; machine learning; biopharmaceutical manufacturing; crystallisation techniques; downstream processes

(This special issue belongs to the Section Biomolecular Crystals)

Optical and Electrical Properties of Nano- and Microcrystals

edited by Yuhua Duan

submission deadline 10 Oct 2025 | 1 articles | Viewed by 306 | Submission Open

Keywords: nano- and microcrystals; material growth methods; material characterization; semiconductor materials ; optoelectronic devices; nanoscale fabrication techniques; multi-scale modeling; energy systems

(This special issue belongs to the Section Inorganic Crystalline Materials)

The Design and Synthesis of Advanced Energy Catalytic Materials

edited by Wanliang Yang

submission deadline 10 Oct 2025 | Viewed by 144 | Submission Open

Keywords: energy catalytic materials; nanostructured catalyst; computational modelin; single-atom catalysts; metal– organic frameworks (MOFs); 2D materials

(This special issue belongs to the Section Materials for Energy Applications)

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