Results 51 to 60 of about 19,560 (246)

Chiral structures of electric polarization vectors quantified by X-ray resonant scattering

Nature Communications, 2022
The polar chiral texture of the vortex or skyrmion structure in ferroelectric oxide PbTiO3/SrTiO3 superlattice attracts attention. Here, the authors report a theoretical framework to probe emergent chirality of electrical polarization textures.
Kook Tae Kim, Margaret R. McCarter, Vladimir A. Stoica, Sujit Das, Christoph Klewe, Elizabeth P. Donoway, David M. Burn, Padraic Shafer, Fanny Rodolakis, Mauro A. P. Gonçalves, Fernando Gómez-Ortiz, Jorge Íñiguez, Pablo García-Fernández, Javier Junquera, Sandhya Susarla, Stephen W. Lovesey, Gerrit van der Laan, Se Young Park, Lane W. Martin, John W. Freeland, Ramamoorthy Ramesh, Dong Ryeol Lee   +21 more
doaj   +1 more source

Direct evidence for ferroelectric polar distortion in ultrathin lead titanate perovskite films

, 2005
X-ray photoelectron diffraction is used to directly probe the intra-cell polar atomic distortion and tetragonality associated with ferroelectricity in ultrathin epitaxial PbTiO3 films. Our measurements, combined with ab-initio calculations, unambiguously
A. Munkholm, C. Koitzsch, C. Lichtensteiger, C. S. Fadley, E. Bousquet, F. Clerc, F. J. Garcia de Abajo, F. Jona, J. B. Pendry, J.-M. Triscone, L. Despont, M. G. Garnier, P. Aebi, Ph. Ghosez   +13 more
core   +2 more sources

Monodomain to polydomain transition in ferroelectric PbTiO3 thin films with La0.67Sr0.3MnO3 electrodes [PDF]

, 2006
Finite size effects in ferroelectric thin films have been probed in a series of epitaxial perovskite c-axis oriented PbTiO3 films grown on thin La0.67Sr0.33MnO3 epitaxial electrodes. The film thickness ranges from 480 down to 28 A (7 unit cells).
Aebi, Philippe, Ahn, Charles H., Dawber, Matthew, Despont, Laurent, Hoffman, Jason, Lichtensteiger, Celine, Stucki, Nicolas, Triscone, Jean-Marc, Yau, Jeng-Bang   +8 more
core   +3 more sources

Highly Sensitive and Selective PbTiO3 Gas Sensors with Negligible Humidity Interference in Ambient Atmosphere.

ACS Applied Materials and Interfaces, 2019
Three PbTiO3 nanostructures were synthesized using a one-step hydrothermal reaction with different TiO2 powders as Ti sources, and their gas-sensing properties were investigated.
Xingyu Ma, Hua-Yao Li, S. Kweon, Seong-Yong Jeong, Jong‐Heun Lee, S. Nahm   +5 more
semanticscholar   +1 more source

Flexible Sensor‐Based Human–Machine Interfaces with AI Integration for Medical Robotics

Advanced Robotics Research, EarlyView.
This review explores how flexible sensing technology and artificial intelligence (AI) significantly enhance human–machine interfaces in medical robotics. It highlights key sensing mechanisms, AI‐driven advancements, and applications in prosthetics, exoskeletons, and surgical robotics.
Yuxiao Wang, Zhipeng Jiang, Sun Hwa Kwon, Matthew Ibrahim, Alexander Dang, Lin Dong   +5 more
wiley   +1 more source

Theoretical Model Construction of Piezoelectric Coefficient of PbTiO₃ Nanoparticles

Chemical Engineering Transactions, 2017
This paper aims to explain the size dependence of piezoelectric coefficient d33(D) of PbTiO3 nanoparticles. For this purpose, a theoretical model was created for the size-dependent piezoelectric coefficient, considering the Curie temperature for small ...
Shuai Zhang, Lei Chen
doaj   +1 more source

Engineering polar vortex from topologically trivial domain architecture

Nature Communications, 2021
The majority of polar structures emerging naturally in ferroelectrics are topologically trivial. Here, the authors demonstrate reconstruction of topologically trivial strip-like domain architecture into arrays of polar vortex in (PbTiO3)10/(SrTiO3)10 ...
Congbing Tan, Yongqi Dong, Yuanwei Sun, Chang Liu, Pan Chen, Xiangli Zhong, Ruixue Zhu, Mingwei Liu, Jingmin Zhang, Jinbin Wang, Kaihui Liu, Xuedong Bai, Dapeng Yu, Xiaoping Ouyang, Jie Wang, Peng Gao, Zhenlin Luo, Jiangyu Li   +17 more
doaj   +1 more source

Improving the Functional Control of Aged Ferroelectrics using Insights from Atomistic Modelling [PDF]

, 2017
We provide a fundamental insight into the microscopic mechanisms of the ageing processes. Using large scale molecular dynamics simulations of the prototypical ferroelectric material PbTiO3, we demonstrate that the experimentally observed ageing phenomena
Chapman, J. B. J., Cohen, R. E., Duffy, D. M., Kimmel, A. V.   +3 more
core   +2 more sources

Peptide Sequence Programmed Piezoelectric Response by Supramolecular Self‐Assembly

Advanced Science, EarlyView.
In this study, hydrophobic tripeptides are explored as building blocks for stable piezoelectric crystals. Tripeptides with phenylalanine at the central position self‐assembled into uniform, thermally stable crystals. Piezoresponse force microscopy reveals a high effective piezoelectric coefficient of 24.0 pC N−1, attributed to asymmetric molecular ...
Xuejiao Yang, Shuaijie Liu, Honglei Lu, Yuehui Wang, Hongyue Zhang, Wei Ji, Huaimin Wang   +6 more
wiley   +1 more source

Aging in epitaxial ferroelectric PbTiO3 films [PDF]

Journal of Advanced Dielectrics, 2016
Ability of epitaxial perovskite oxide ferroelectric films to maintain a poled polarization state on a long-term scale is crucial for advanced devices employing such films.
Jari Hannu, Jani Peräntie, Sergiu Mihai Stratulat, Heli Jantunen, Marina Tyunina   +4 more
doaj   +1 more source