Xufei Fang
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View article: A data-driven quest for room-temperature bulk plastically deformable ceramics
A data-driven quest for room-temperature bulk plastically deformable ceramics Open
The growing number of ceramics exhibiting bulk plasticity at room temperature has renewed interest in revisiting plastic deformation and dislocation-mediated mechanical and functional properties in these materials. In this work, a data-dri…
View article: Scale-bridging dislocation plasticity in MgO at room temperature
Scale-bridging dislocation plasticity in MgO at room temperature Open
View article: Dislocation engineering: Unlocking functional potential in ceramics
Dislocation engineering: Unlocking functional potential in ceramics Open
View article: Donor doping-regulated dislocation plasticity across the length scale in SrTiO3
Donor doping-regulated dislocation plasticity across the length scale in SrTiO3 Open
Donor doping as a form of point defect engineering is a popular strategy for tuning the physical properties of functional oxides. The renewed interest in dislocation-tuned functional properties in ceramics requires a deeper understanding o…
View article: Stable crack propagation in dislocation-engineered oxide visualized by double cleavage drilled compression test
Stable crack propagation in dislocation-engineered oxide visualized by double cleavage drilled compression test Open
View article: Hydrogen response to high‐density dislocations in bulk perovskite oxide SrTiO <sub>3</sub>
Hydrogen response to high‐density dislocations in bulk perovskite oxide SrTiO <sub>3</sub> Open
Hydrogen plays an increasingly important role in green energy technologies. For instance, proton‐conducting oxides with high performance for fuel cell components or electrolyzers need to be developed. However, this requires a fundamental u…
View article: Thermal Insulation and Fireproof Aerogel Composites for Automotive Batteries
Thermal Insulation and Fireproof Aerogel Composites for Automotive Batteries Open
New energy vehicles face a critical challenge in balancing the thermal safety management of high-specific-energy battery systems with the simultaneous improvement of energy density. With the large-scale application of high-energy-density s…
View article: Dislocation response to electric fields in strontium titanate: A mesoscale indentation study
Dislocation response to electric fields in strontium titanate: A mesoscale indentation study Open
Dislocations in perovskite oxides have drawn increasing research interest due to their potential of tuning functional properties of electroceramics. Open questions remain regarding the behavior of dislocations concerning their stability un…
View article: Atomic‐Scale Insights into Nanoparticle Exsolution at Dislocations in Dislocation‐Engineered Catalysts
Atomic‐Scale Insights into Nanoparticle Exsolution at Dislocations in Dislocation‐Engineered Catalysts Open
Achieving control over properties such as density and lateral distribution of catalytic nanoparticles under operation conditions is a major challenge for the development of active and durable catalysts, where nanoparticle coarsening is oft…
View article: Toughening beta-Ga2O3 via mechanically seeded dislocations
Toughening beta-Ga2O3 via mechanically seeded dislocations Open
\b{eta}-Ga2O3 is a promising candidate for next-generation semiconductors, but is limited by its intrinsic brittleness, which hinders its application in flexible electronics and high-precision devices. This study explores a new approach to…
View article: Stable crack propagation in dislocation-engineered oxide visualized by double cleavage drilled compression test
Stable crack propagation in dislocation-engineered oxide visualized by double cleavage drilled compression test Open
Understanding crack tip - dislocation interaction is critical for improving the fracture resistance of semi-brittle materials like room-temperature plastically deformable ceramics. Here, we use a modified double cleavage drilled compressio…
View article: Dislocation-enhanced piezoelectric catalysis of KNbO3 crystal for water splitting
Dislocation-enhanced piezoelectric catalysis of KNbO3 crystal for water splitting Open
Dislocations in oxides with ionic/covalent bonding hold the potential of harnessing versatile functionalities. Here, high-density dislocations in a large plastic zone in potassium niobate (KNbO3) crystals are mechanically introduced by roo…
View article: Effective reduction in thermal conductivity by high-density dislocations in SrTiO3
Effective reduction in thermal conductivity by high-density dislocations in SrTiO3 Open
Decreasing thermal conductivity is important for designing efficient thermoelectric devices. Traditional engineering strategies have focused on point defects and interface design. Recently, dislocations as line defects have emerged as an a…
View article: Coupled electromigration–nanoindentation study on dislocation nucleation in SrTiO <sub>3</sub>
Coupled electromigration–nanoindentation study on dislocation nucleation in SrTiO <sub>3</sub> Open
Modern functional oxides are mainly engineered by doping, essentially by tuning the defect chemistry. Recent studies suggest that dislocations offer a new perspective for enhancing the mechanical and physical properties of ceramic oxides. …
View article: A brief history of dislocations in ceramics: From Steinsalz to quantum wires
A brief history of dislocations in ceramics: From Steinsalz to quantum wires Open
Dislocations in ceramics have enjoyed a long yet underappreciated research history. This brief historical overview and reflection on the current challenges provides new insights into using this line defect as a rediscovered tool for engine…
View article: Modern strategies in classical fields of nanoindentation: Semiconductors, ceramics, and thin films
Modern strategies in classical fields of nanoindentation: Semiconductors, ceramics, and thin films Open
View article: Dislocations and plasticity of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>KTaO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math> perovskite modeled with an interatomic potential
Dislocations and plasticity of perovskite modeled with an interatomic potential Open
Potassium tantalate KTaO3 is a cubic, paraelectric perovskite ceramic that exhibits surprising ductility at room temperature as most recently reported. Much like strontium titanate (SrTiO3), plastic deformation is accommodated by dislocati…
View article: Room‐temperature dislocation plasticity in ceramics: Methods, materials, and mechanisms
Room‐temperature dislocation plasticity in ceramics: Methods, materials, and mechanisms Open
Dislocation‐mediated plastic deformation in ceramic materials has sparked renewed research interest due to the technological potential of dislocations. Despite the long research history of dislocations as one‐dimensional lattice defects in…
View article: Impact of dislocation densities on the microscale strength of single-crystal strontium titanate
Impact of dislocation densities on the microscale strength of single-crystal strontium titanate Open
View article: Coupled electromigration-nanoindentation study on dislocation nucleation in SrTiO3
Coupled electromigration-nanoindentation study on dislocation nucleation in SrTiO3 Open
Modern functional oxides are mainly engineered by doping, essentially by tuning the defect chemistry. Recent studies suggest that dislocations offer a new perspective for enhancing the mechanical and physical properties of ceramic oxides. …
View article: Dislocations in ceramics: The road less traveled
Dislocations in ceramics: The road less traveled Open
View article: Photoplastic anisotropy in nanoindentation of wurtzite ZnO single crystals
Photoplastic anisotropy in nanoindentation of wurtzite ZnO single crystals Open
Anisotropy plays a crucial role in understanding and optimizing the properties of materials with directional dependencies. The hexagonal wurtzite structure, which is a typical crystal structure in compound semiconductors, demonstrates pron…
View article: In silico modeling of targeted protein degradation
In silico modeling of targeted protein degradation Open
Targeted protein degradation (TPD) techniques, particularly proteolysis-targeting chimeras (PROTAC) and molecular glue degraders (MGD), have offered novel strategies in drug discovery. With rapid advancement of computer-aided drug design (…
View article: Dislocations and plasticity of KTaO$_3$ perovskite modeled with a new interatomic potential
Dislocations and plasticity of KTaO$_3$ perovskite modeled with a new interatomic potential Open
Potassium tantalate KTaO3 is a cubic, paraelectric perovskite ceramic that exhibits surprising ductility at room temperature as most recently reported. Much like strontium titanate (SrTiO3), plastic deformation is accommodated by dislocati…
View article: Nanoindentation Crack Suppression and Hardness Increase in SrTiO3 by Dislocation Engineering
Nanoindentation Crack Suppression and Hardness Increase in SrTiO3 by Dislocation Engineering Open
View article: Dislocation‐induced local symmetry reduction in single‐crystal KNbO <sub>3</sub> observed by Raman spectroscopy
Dislocation‐induced local symmetry reduction in single‐crystal KNbO <sub>3</sub> observed by Raman spectroscopy Open
In recent years, dislocation‐tuned functionalized ceramics have become one of the focal points of modern materials research due to their outstanding properties. These range from improved electrical conductivity and ferroelectric properties…
View article: Ultrahigh‐Pressure Structural Modification in BiCuSeO Ceramics: Dense Dislocations and Exceptional Thermoelectric Performance
Ultrahigh‐Pressure Structural Modification in BiCuSeO Ceramics: Dense Dislocations and Exceptional Thermoelectric Performance Open
Dislocations as line defects in crystalline solids play a crucial role in controlling the mechanical and functional properties of materials. Yet, for functional ceramic oxides, it is very difficult to introduce dense dislocations because o…
View article: Damage-tolerant oxides by imprint of an ultra-high dislocation density
Damage-tolerant oxides by imprint of an ultra-high dislocation density Open
Dislocations in ductile ceramics offer the potential for robust mechanical performance while unlocking versatile functional properties. Previous studies have been limited by small volumes with dislocations and/or low dislocation densities …
View article: Damage-tolerant oxides by imprint of an ultra-high dislocation density
Damage-tolerant oxides by imprint of an ultra-high dislocation density Open
Dislocations in ductile ceramics offer the potential for robust mechanical performance while unlocking versatile functional properties. Previous studies have been limited by small volumes with dislocations and/or low dislocation densities …
View article: Room‐temperature bulk plasticity and tunable dislocation densities in KTaO <sub>3</sub>
Room‐temperature bulk plasticity and tunable dislocation densities in KTaO <sub>3</sub> Open
We report room‐temperature bulk plasticity mediated by dislocations in single‐crystal cubic potassium tantalate oxide (KTaO 3 ), contrasting the conventional knowledge that single‐crystal KTaO 3 is susceptible to brittle fracture. A mechan…