8 papers
Tunable dislocations overcome mechano-functional tradeoff in perovskite oxides
Jiawen Zhang, Wenjun Lu, Xufei Fang
Recent advancements in dislocation engineering are reshaping the traditional view towards ceramics being brittle. Here, we use KTaO3 (KTO), a perovskite oxide that is newly discove…
Scale-bridging dislocation plasticity in MgO at room temperature
Jiawen Zhang, Zhangtao Li, Yuwei Zhang +7
Dislocations in ceramics have recently gained renewed research interest, in contrast to the traditional belief that ceramics are inherently brittle. Understanding dislocation mecha…
Toughening beta-Ga2O3 via mechanically seeded dislocations
Zanlin Cheng, Jiawen Zhang, Peng Gao +3
\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 hi…
Dislocation-enhanced piezoelectric catalysis of KNbO3 crystal for water splitting
Hanyu Gong, Jiawen Zhang, Yan Zhao +6
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…
Effective reduction in thermal conductivity by high-density dislocations in SrTiO3
Jinxue Ding, Jiawen Zhang, Jinfeng Dong +5
Decreasing thermal conductivity is important for designing efficient thermoelectric devices. Traditional engineering strategies have focused on point defects and interface design.…
Room-temperature dislocation plasticity in ceramics: Methods, Materials, and Mechanisms
Alexander Frisch, Chukwudalu Okafor, Oliver Preuà +5
Dislocation-mediated plastic deformation in ceramic materials has sparked renewed research interest due to the technological potential of dislocations. Despite the long research hi…