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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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Reviews in Liquid Crystals

edited by

Vladimir Chigrinov

and

Aleksey Kudreyko

submission deadline 15 Jul 2025 | 4 articles | Viewed by 12187 | Submission Open

Keywords: computer-aided molecular design; synthesis and characterization; the alignment of liquid crystals; macroscopic and microscopic properties; phase structure and phase transitions; electro- and thermooptical effects; display device architecture; polymeric and biological liquid crystals; the theory of liquid crystals; ferroelectric and antiferroelectric liquid crystals

(This special issue belongs to the Section Liquid Crystals)

Crystallization of High Performance Metallic Materials (2nd Edition)

edited by

Wangzhong Mu

and

Chao Chen

submission deadline 15 Jul 2025 | 8 articles | Viewed by 11231 | Submission Open

Keywords: solidification of steels and alloys; casting process; solid phase transformation; high-performance metallic materials; in-situ characterization; nucleation and growth in metals; inclusion/precipitate engineering in steels and alloys; slag and flux engineering; thermodynamics and kinetics of crystallization; process– structure– property correlation in alloys; simulations

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

High-Performance Metallic Materials

edited by Yunwei Gui, Lingxiao Ouyang and Sanbao Lin

submission deadline 15 Jul 2025 | 4 articles | Viewed by 6930 | Submission Open

Keywords: superalloys; light metals; additive manufacturing; severe plastic deformation; computer simulations

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

Crystallisation Advances

edited by

Kannuchamy Vasanth Kumar

submission deadline 15 Jul 2025 | 6 articles | Viewed by 4203 | Submission Open

Keywords: nucleation; crystal growth; industrial crystallisation; crystallisation processes

(This special issue belongs to the Section Industrial Crystallization)

New Insights into Perovskite Materials: From Fundamental Science to Applications

edited by Tengteng Li, Shiqi Li and

Silei Wang

submission deadline 15 Jul 2025 | 1 articles | Viewed by 2082 | Submission Open

Keywords: perovskite materials; perovskite solar cells; perovskite light-emitting diodes; perovskite photodetectors; perovskite lasers; perovskite-based new theory; perovskite-based applications

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

Mechanical Properties and Friction Behavior of Metal Alloys and Their Composites

edited by Jingwen Qiu

submission deadline 15 Jul 2025 | 1 articles | Viewed by 485 | Submission Open

Keywords: mechanical properties; friction and wear; lubrication; steel; aluminum alloy; titanium alloy; magnesium alloy; high-entropy alloy; composites; EBSD; TEM; APT

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

The Development and Applications of Femtosecond Lasers

edited by

Felice Gesuele

submission deadline 15 Jul 2025 | Viewed by 277 | Submission Open

Keywords: femtosecond laser sources; ultrafast spectroscopy; electron and phonon dynamics; multiphoton imaging; nonlinear optical imaging; ultrafast all-optical signal processing; femtosecond laser irradiation and micromachining; laser-based surgery

Advances in Functional Inorganic Materials Prepared by Wet Chemical Methods (Third Edition)

edited by

Aleksej Zarkov

Loreta Tamasauskaite-Tamasiunaite

and

Aivaras Kareiva

submission deadline 20 Jul 2025 | 4 articles | Viewed by 6634 | Submission Open

Keywords: multifunctional materials; magnetic materials; ferroelectric materials; piezoelectric materials; optical materials; processing routes; ceramics

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

Nanomaterials for Environmental and Solar Energy Applications

edited by Sofia Stefa and

Emmanouil Gagaoudakis

submission deadline 20 Jul 2025 | 2 articles | Viewed by 3645 | Submission Open

Keywords: nanomaterial synthesis; physicochemical properties; band gap energy tuning; solar energy; environmental remediation; energy conversion; photocatalysis; thermochromic coatings; solar cells; batteries

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

Advanced Research of Silicon Photonics and Optoelectronics Devices

edited by Nicola Peserico and Martin Thomaschewski

submission deadline 20 Jul 2025 | 1 articles | Viewed by 2651 | Submission Open

Keywords: silicon photonics; optoelectronic devices; photonic integrated circuits; interconnect; optical computing; free-space communications; photonic integration; advanced materials for photonics

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

Research and Application of Photoelectrocatalytic Materials

edited by Yanming Fu,

Xiaokang Wan

and Zili Ma

submission deadline 20 Jul 2025 | 2 articles | Viewed by 2428 | Submission Open

Keywords: photoelectrocatalytic; photoelectrode materials; solar energy storage; high-value-added products; structure modulations; surface science

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

Optical Properties of Crystalline Semiconductors and Nanomaterials

edited by

Mithun Bhowmick

submission deadline 20 Jul 2025 | 2 articles | Viewed by 2068 | Submission Open

Keywords: semiconductors; optoelectronics; quantum dots; nanoparticles; nanostructures; quantum materials; photoluminescence; photoelectric

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

New Trends in Materials for Permanent Magnets

edited by

Marian Grigoras

and

Mihaela Lostun

submission deadline 20 Jul 2025 | 1 articles | Viewed by 1977 | Submission Open

Keywords: permanent magnet; magnetic materials; magnetic properties; maximum energy product; rare earth; nanocomposite; powders; melt-spun ribbons; recycling

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

Synthesis and Catalytic Performance of Transition Metal Catalysts

edited by

Keke Zhi

and

Nabeen K Shrestha

submission deadline 20 Jul 2025 | 2 articles | Viewed by 1932 | Submission Open

Keywords: transition metal catalysts; metal– organic frameworks; metal oxide; electrocatalysis; doped composites; catalytic performance

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

Emerging Topics of High-Performance Alloys (2nd Edition)

edited by

Li-Wei Tseng

Yeong-Lin Lai

James Smialek

and Chau-Yi Tsai

submission deadline 20 Jul 2025 | 2 articles | Viewed by 1841 | Submission Open

Keywords: smart materials; high-performance alloys; shape memory alloys; high entropy alloys; high-strength aluminum alloys; mechanical property; microstructure characterization

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

Analysis of Halogen and Other σ-Hole Bonds in Crystals (2nd Edition)

edited by

Jane S. Murray

submission deadline 20 Jul 2025 | 1 articles | Viewed by 1101 | Submission Open

Keywords: halogen bonding; sigma-hole bonding; electrostatic potentials; nature of noncovalent interactions

(This special issue belongs to the Section Crystal Engineering)

New Insights into Photonic Crystal Fibers: From Fundamentals to Materials Performance

edited by

Vladimir P. Minkovich

submission deadline 20 Jul 2025 | Viewed by 370 | Submission Open

Keywords: photonic crystal fibers; microstructured optical fibers; the design and fabrication of photonic crystal fibers; post processing of photonic crystal fibers; optical communication; optical fiber sensors; optical fiber devices; optical fiber interferometers; nonlinear phenomena in optical fibers

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

Metal Oxide Nanocomposites and Thin Films: Fabrication, Properties, and Applications

edited by

Jorge de Souto Martins

submission deadline 20 Jul 2025 | Viewed by 297 | Submission Open

Keywords: metal oxide nanocomposites; metal oxide thin films; nanostructures; solution-based processes; sustainable materials; device physics; flexible electronics transparent electronics

Materials Dedicated to Perovskite Optoelectronic Functional Materials and Devices

edited by

Yongqiang Ji

, Hengwei Qiu and Qixuan Zhong

submission deadline 20 Jul 2025 | Viewed by 171 | Submission Open

Keywords: LEDs; solar cells; nanocrystals; perovskite material; II-IV and III-V compound; advanced characterizations

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

Properties and Defects of Silicon Carbide

edited by Yingxin Cui and

Francisco M. Morales

submission deadline 20 Jul 2025 | Viewed by 148 | Submission Open

Keywords: silicon carbide; electrical properties; doping; thermal conductivity; coefficient of thermal expansion; defects; SiC device

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

Design and Energy Conversion of Functional Electrode Materials for Multivalent Ion Batteries

edited by Shunyu Yao

submission deadline 20 Jul 2025 | Viewed by 101 | Submission Open

Keywords: supercapacitors; electrocatalysis; energy density; ion batteries; cation intercalation

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

Surface Modification Treatments of Metallic Materials (2nd Edition)

edited by

Yong Wang

, Zongwei Ren and

Jiaqiang Dang

submission deadline 22 Jul 2025 | 1 articles | Viewed by 461 | Submission Open

Keywords: surface modification; surface integrity; microstructure; residual stress; surface morphology; microhardness; metallic materials; mechanical property; fatigue; high-performance manufacturing

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

II-VI and III-V Semiconductors for Optoelectronic Devices

edited by

Yi Zhang

and Ziyuan Li

submission deadline 30 Jul 2025 | 4 articles | Viewed by 3026 | Submission Open

Keywords: II-VI semiconductors; III-V semiconductors; solid-state physics; optics; optoelectronics; lasers; detectors; photovoltaic solar cells; ultrafast carrier dynamics

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

Growth and Properties of Novel Scintillator Crystals

edited by

Yuui Yokota

and

Takahiko Horiai

submission deadline 30 Jul 2025 | 1 articles | Viewed by 757 | Submission Open

Keywords: novel scintillator crystals; halide scintillator crystals; eutectic scintillator crystals; nanoparticle scintillator crystals; shape-controlled scintillator crystals; novel and modified growth method

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

Advances and Perspectives in Noble Metal Nanoparticles

edited by

Magdalena Laskowska

and

Agnieszka Karczmarska

submission deadline 30 Jul 2025 | 1 articles | Viewed by 493 | Submission Open

Keywords: nanomaterials; nanoparticles; noble metal; AuNPs; AgNPs; PtNPs; platinum group metals; sensing; catalysis; nanomedicine; bioactivity

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

Laser Technology: Numerical and Experimental Investigations of Alloys

edited by

Joonghan Shin

submission deadline 30 Jul 2025 | Viewed by 125 | Submission Open

Keywords: laser processing; alloys; material characterization; numerical simulation

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

Bioinspired Mineralization of Dental Tissues

edited by

Go Inoue

submission deadline 31 Jul 2025 | 1 articles | Viewed by 644 | Submission Open

Keywords: remineralization; biomaterials; crystallization; fluoride

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

Novel Crystalline Catalysts

edited by Lili Wan

submission deadline 31 Jul 2025 | Viewed by 375 | Submission Open

Keywords: synthesis of novel crystals; nanocrystal; nanocluster; single crystal; polycrystal; composite crystal; effect of crystal phase; crystal structure; exposed crystal phase or crystal defects on catalysis; green energy conversion; degradation of pollutant; green synthesis; structure activity relationship

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

Protein Crystallography: The State of the Art

edited by

Vasundara Srinivasan

and

Santosh Panjikar

submission deadline 10 Aug 2025 | 5 articles | Viewed by 7301 | Submission Open

Keywords: time-resolved serial crystallography in XFEL and synchrotrons (TR-SFX; TR-SSX); pink beam crystallography; small-angle X-ray scattering (SAXS); structural-based drug discovery; mechanistic enzymology; membrane proteins; macromolecular complexes; software developments for macromolecular crystallography; deep learning and artificial intelligence

(This special issue belongs to the Section Macromolecular Crystals)

Microstructural Characterization and Property Analysis of Alloys

edited by Lei Wang

submission deadline 10 Aug 2025 | 7 articles | Viewed by 5710 | Submission Open

Keywords: microstructural characterization; alloys; performance analysis; materials science; material performance optimization; crystallography

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

Synthesis, Characterization and Applications of Crystalline Electroconductive Polymers

edited by Rocco Carcione,

Silvia Battistoni

, Giorgio Scordo and

Robert A. Jackson

submission deadline 10 Aug 2025 | 3 articles | Viewed by 5097 | Submission Open

Keywords: electroconducting polymer-based materials; nanocomposites; carbon-based nanomaterials; biocomposite materials; polymerization processes; polymer matrix; surface modification; interfacial properties; applications; sensors and devices; morphological and structural characterizations

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

Superconductivity and Condensed Matter Physics

edited by Byungkyun Kang

submission deadline 10 Aug 2025 | 1 articles | Viewed by 550 | Submission Open

Keywords: superconductors ; high-temperature superconductivity; low-dimensional crystals; hydrides; spin-triplet superconductor; nanostructure; magnetism ; topological quantum

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

Research on Scintillators

edited by Siqi Li and Zhi Yang

submission deadline 10 Aug 2025 | Viewed by 243 | Submission Open

Keywords: new materials for scintillation; scintillator fabrication techniques; scintillators in medical; environmental; and security; advances in scintillator technology; scintillator modeling and simulation

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

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 8597 | 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 18887 | 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 10566 | Submission Open

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

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

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 3724 | 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)

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 3675 | Submission Open

Keywords: solution; synthesis; oxide; nanostructure

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

Advances in Diamond Crystals and Devices

edited by Benjian Liu, Yu Fu and

Bing Dai

submission deadline 20 Aug 2025 | 2 articles | Viewed by 3581 | 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)

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 2817 | Submission Open

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

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 2633 | 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)

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

edited by Zhijie Bi

submission deadline 20 Aug 2025 | 2 articles | Viewed by 1966 | 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 1647 | 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 1351 | 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 196 | 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 180 | 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 171 | 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 135 | 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 82 | 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 2644 | 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)

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