Results 1 to 10 of about 553 (127)

Flexoelectric Suppression of Interfacial Carrier Loss in BaTiO₃ Thin-Film Bulk Photovoltaic Systems. [PDF]

Adv Sci (Weinh)
In single‐crystalline BaTiO3 thin films, flexoelectric strain gradients strongly enhance photocurrent by suppressing interfacial carrier loss. Loading experiments reveal a ∼35‐fold photocurrent increase with applied force. Self‐consistent electrostatic modeling shows that strain gradients reshape the interfacial potential landscape, strengthen local ...
Jang M, Lim H, Yeom S, Oh J, Yang Y, Lee H.   +5 more
europepmc   +2 more sources

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks. [PDF]

Adv Sci (Weinh)
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Huang X, Li F, Zheng R.
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Sub-Nanometer Curvature Unlocks Quantum Orbital Flexoelectricity in Graphene. [PDF]

Adv Mater
In self‐assembled, reproducible, large‐area, quasi‐pristine graphene nanowrinkles, extreme curvature forces out‐of‐plane π‐electrons toward hybridization, driving a transition from classical to quantum orbital flexoelectricity. As curvature approaches the fundamental physical limit set by the C─C bond length, the resulting polarization increases by ...
Iyengar SA, McHugh JG, Salvage JP, Vajtai R, Gadhamshetty V, Dalton AB, Tripathi M, Ajayan PM, Meunier V.   +8 more
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Polarization Dynamics in Ferroelectrics: Insights Enabled by Machine Learning Molecular Dynamics. [PDF]

Adv Sci (Weinh)
Machine learning molecular dynamics is presented as a route to capture polarization switching, domain wall kinetics, topological polar textures, and polar mechanical coupling beyond the limits of conventional atomistic methods. This Perspective surveys recent progress and identifies key methodological directions, including long‐range electrostatics ...
Bai D, He R, Liu J, Kou L.
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Flexoelectrically Induced Polar Topology in Twisted SrTiO₃ Membranes. [PDF]

Adv Mater
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Tenreiro I, Aramberri H, Rouco V, Sánchez-Santolino G, Cabero M, Gallego F, Sánchez-Manzano D, González-Calbet JM, Mompeán F, García-Hernández M, Rivera-Calzada A, Íñiguez-González J, León C, Santamaría J.   +13 more
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Electrically Tunable Piezotronic Transistor by Coupling Interface Polar Symmetry and Strain Gradient. [PDF]

Adv Sci (Weinh)
A macroscale tip‐induced strain gradient generates bulk piezo‐charges in GaN, enabling bias‐controlled shielding and selective Schottky barrier modulation. This strain‐gradient piezotronic transistor exhibits electrically switchable high‐ and low‐sensitivity states, providing ultrahigh strain sensitivity and wide tunability for adaptive mechanical ...
Hu G, Dong X, Zhang Y, Chao Y, Li M, Liu M, Pan L, Li L, Huang W, Huang F.   +9 more
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Electromechanical Coupling Analysis of a Piezoelectric–Flexoelectric–Semiconductor Cantilever Beam [PDF]

Micromachines
This paper presents a theoretical study on the electromechanical coupling response of piezoelectric–flexoelectric–semiconductor (PFS) nanocantilevers by adopting flexoelectric elasticity and semiconductor theory.
Yaxuan Su, Xuezhi Wu, Zhidong Zhou
doaj   +2 more sources

Highly flexoelectric response for uranium removal and recovery using the organic-inorganic hybrid material [PDF]

Nature Communications
Catalysis was an effective method for uranium recovery and environmental remediation. However, the weak flexoelectric response, despite being universal in dielectric materials, greatly limited its appeal for research and catalytic applications.
Cheng Meng, Di Fu, Chongxiu Li, Zaiqi Cheng, Zhibin Zhang, Xuanting Wei, Bowei Chen, Baowei Hu, Yunhai Liu, Zhenli Sun, Xiangke Wang   +10 more
doaj   +2 more sources

Multiferroic-Centric Materials and Systems Engineering for Battery Applications: An Insight Into Mechanisms, Strategies, and Characterizations. [PDF]

Adv Sci (Weinh)
Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Su J, Zhu Y, Peng H, Li M, Zhang X, Wu M, Zhang S, Zeng Y, Liao J, Luo M, Huang H, Wang Y, Li S, Li W.   +13 more
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Designer Moiré Quantum Materials Enabled by Freestanding Oxide Membranes in Twisted and Hybrid Bilayers. [PDF]

Adv Sci (Weinh)
Freestanding oxide membranes transform twistronics by enabling deterministic stacking, strain release, and integration with two‐dimensional materials. A unified framework links local atomic registry to structural reconstruction, polar textures, charge modulation, flat bands, and magnetic responses, while identifying the fabrication and characterization
Kaur P, Rahul, Yang JC.
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