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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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Corrosion and Mechanical Performance of Magnesium Alloys

edited by

Björn Wiese

Mert Celikin

and Norbert Hort

submission deadline 15 Aug 2025 | 4 articles | Viewed by 8997 | Submission Open

Keywords: mg alloys; magnesium alloys; mg-based materials; processing; microstructure; precipitation; mechanical properties; corrosion; coating; degradation; modelling; simulation

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

Structural Engineering of Low-Dimensional Materials for Desired Properties

edited by

Wenshuo Xu

submission deadline 20 Aug 2025 | 8 articles | Viewed by 19942 | Submission Open

Keywords: graphene; transition metal dichalcogenides; boron nitride; MXenes; carbon nanotubes; quantum dots; fullerenes; synthesis; structures; properties

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

Advances in Materials for Energy Conversion and Storage

edited by Palanisamy Rajkumar, Vediyappan Thirumal and Asaithambi Sankaiya

submission deadline 20 Aug 2025 | 6 articles | Viewed by 12897 | Submission Open

Keywords: energy conversion; energy storage; batteries; supercapacitors; fuel cells; catalysts

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

Solution Processing and Properties of Oxide Films and Nanostructures

edited by

Chien-Jung Huang

, Chin-Hau Chia and

Kuan-Wei Lee

submission deadline 20 Aug 2025 | 3 articles | Viewed by 4073 | Submission Open

Keywords: solution; synthesis; oxide; nanostructure

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

Advances in Surface Modifications of Metallic Materials

edited by

Wenbo Wang

Auezhan Amanov

and Zhengwu Fang

submission deadline 20 Aug 2025 | 3 articles | Viewed by 3887 | Submission Open

Keywords: surface modification; severe plastic deformation; coating; microstructure; residual stress; grain size refinement; extreme environment; metallic materials; tribology; corrosion

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

Advances in Diamond Crystals and Devices

edited by Benjian Liu, Yu Fu and

Bing Dai

submission deadline 20 Aug 2025 | 2 articles | Viewed by 3835 | Submission Open

Keywords: diamond growth and doping; high power devices; microwave power devices; diamond detectors; color centers; quantum sensing; quantum technologies; fluorescent nanodiamond; application of diamond for heat dissipation; diamond and carbon materials for biomedical applications; chemical applications

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

Microstructure and Properties of Steels and Other Structural Alloys, Second Edition

edited by

Qing-Qiang Ren

submission deadline 20 Aug 2025 | 3 articles | Viewed by 2960 | Submission Open

Keywords: steels and structural alloys; material characterization; phase transformations; mechanical properties; heat-resistant alloys; phase transformations; thermodynamic simulations; microstructure– property relationship; material design and development

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

Crystal Structures and Applications of Perovskite Halides in Solar Cells

edited by Yutong Ren and

Sawanta Mali

submission deadline 20 Aug 2025 | 2 articles | Viewed by 2948 | Submission Open

Keywords: crystal structures; perovskite halides; solar cells; X-ray diffraction; transmission electron microscopy; thin films; power conversion efficiency

Advanced Solid-State Batteries: Materials, Interfaces, Technologies, and Applications

edited by Zhijie Bi

submission deadline 20 Aug 2025 | 2 articles | Viewed by 2217 | Submission Open

Keywords: new materials (cathodes; electrolytes; and anodes) for solid-state batteries; high-performance solid-state alkali metals (Li; Na; K; Al; Mg; etc.) batteries; solid-state air batteries (Li-air; Li-O2; Na-air; Na-O2; Li-CO2; etc.); new design; fabrication and manufacturing technologies; interfacial engineering strategies for solid-state batteries; advanced characterization of interfacial evolutions; reaction mechanisms of electrode materials; failure mechanisms of electrode/electrolyte interfaces; formation and solutions to dendrites issues; industrial progress of solid-state batteries

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

Electrochemical & Photoelectrochemical Photocatalysts: From Fundamentals to Materials Performance

edited by

Zohreh Masoumi

submission deadline 20 Aug 2025 | 1 articles | Viewed by 1911 | Submission Open

Keywords: electrochemical; photoelectrochemical; photocatalysts; nanomaterials; H2 production; pollutant degradation; CO2 reduction; NH3 production

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

Nonlinear Optical Properties and Applications of 2D Materials

edited by José Guadalupe Murillo-Ramírez and

Thomas Christopoulos

submission deadline 20 Aug 2025 | 1 articles | Viewed by 1519 | Submission Open

Keywords: monoatomic layers; graphene oxide; photonic materials; heterojunctions; thin films

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

Electron Transport, Spintronics and Giant Magnetoresistance Effects in Low-Dimensional Materials

edited by

Tao Xu

and Jing Qi

submission deadline 20 Aug 2025 | Viewed by 211 | Submission Open

Keywords: low-dimensional materials; electron transport; nanostructures; spintronics; magnetronics

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

New Insights into Ferroelectric Oxide Materials: From Fundamentals to Applications

edited by Kai Jiang and

Zhilun Lu

submission deadline 20 Aug 2025 | Viewed by 193 | Submission Open

Keywords: ferroelectric oxide; two-dimensional ferroelectrics; organic ferroelectrics; ferroelectric materials; ferroelectric crystals; crystal structure

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

Research and Applications of f-Element Complexes

edited by Katherine R. Johnson, Jeffrey Einkauf and

Jorge Monteiro

submission deadline 20 Aug 2025 | Viewed by 183 | Submission Open

Keywords: X-ray diffraction; optical properties; actinide covalency; synthesis of novel complexes and crystal growth; crystallization methodologies; rare earth compounds

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

Microstructure Evolution During Cold and Hot Deformation

edited by Xingang Liu,

Jaka Burja

and

Can Wang

submission deadline 20 Aug 2025 | Viewed by 150 | Submission Open

Keywords: microstructures; deformation; fatigue; corrosion; fracture; multi-scale; advanced materials; numerical model

New Insights into the Development of High-Specific-Energy Battery Materials

edited by Jingyi Luan

submission deadline 20 Aug 2025 | Viewed by 99 | Submission Open

Keywords: high-specific-energy batteries; energy storage mechanisms; material structure design; electrode/electrolyte interface; practical applications

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

Design, Microstructure and Mechanical Properties of Cu-Based Alloys

edited by

Qian Lei

submission deadline 28 Aug 2025 | 3 articles | Viewed by 2887 | Submission Open

Keywords: copper-based alloys; microstructure refinement; mechanical properties; additive manufacturing; heat treatments

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

Advanced Welding and Additive Manufacturing

edited by

Chao Chen

and Guorui Sun

submission deadline 29 Aug 2025 | 3 articles | Viewed by 1623 | Submission Open

Keywords: welding; additive manufacturing; microstructure; mechanical properties

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

Crystal Growth of III–V Semiconductors

edited by Xin Wei and

Sawanta Mali

submission deadline 30 Aug 2025 | 1 articles | Viewed by 1579 | Submission Open

Keywords: epitaxy; MOCVD ; MBE; III– V semiconductor

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

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

edited by Dušan Dimić

submission deadline 30 Aug 2025 | 1 articles | Viewed by 1434 | 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 371 | 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 131 | 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 16217 | 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 7308 | Submission Open

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

(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 | 2 articles | Viewed by 1477 | 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)

Advanced Research of Graphene Oxide-Based Materials for Catalysis

edited by

Laroussi Chaabane

and Ivalina Trendafilova

submission deadline 31 Aug 2025 | Viewed by 748 | 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)

Advances of High Entropy Alloys (2nd Edition)

edited by

Long Meng

and

Xiaoming Sun

submission deadline 31 Aug 2025 | 1 articles | Viewed by 732 | 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 152 | 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 116 | 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 | 5 articles | Viewed by 5133 | 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)

Crystalline Materials for Energy Conversion Applications in Solar Cells

edited by Eros Radicchi and Francesca Lo Presti

submission deadline 10 Sep 2025 | 4 articles | Viewed by 2697 | Submission Open

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

(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 2420 | Submission Open

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

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

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 2084 | 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)

Microstructure and Characterization of Crystalline Materials

edited by

Wenqi Guo

Yankun Dou

and

Krzysztof Zaba

submission deadline 10 Sep 2025 | 3 articles | Viewed by 1568 | 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 152 | 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 132 | 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

Synthesis and Characterization of Oxide Nanoparticles

edited by

Adriana-Gabriela Schiopu

and

Laura Madalina Cursaru

submission deadline 15 Sep 2025 | 4 articles | Viewed by 7321 | 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)

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 5741 | Submission Open

(This special issue belongs to the Section Hybrid and Composite 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 984 | 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 338 | 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 270 | 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 193 | 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 5139 | 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)

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

edited by

Waldemar Maniukiewicz

submission deadline 20 Sep 2025 | 3 articles | Viewed by 5074 | 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)

Catalysts and Modeling of Ammonia Synthesis Catalytic Reactions

edited by Constantinos D. Zeinalipour-Yazdi

submission deadline 20 Sep 2025 | 2 articles | Viewed by 4713 | Submission Open

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

(This special issue belongs to the Section Inorganic 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 2962 | 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 2689 | 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 1504 | 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 871 | 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