Results 61 to 70 of about 287,674 (373)

Geometric Currents in Piezoelectricity [PDF]

Archive for Rational Mechanics and Analysis, 2008
As a simple model for piezoelectricity we consider a gas of infinitely many non-interacting electrons subject to a slowly time-dependent periodic potential. We show that in the adiabatic limit the macroscopic current is determined by the geometry of the Bloch bundle.
PANATI, GIANLUCA, Christof Sparber, Stefan Teufel   +2 more
openaire   +3 more sources

Enhancement of piezoelectricity in a mixed ferroelectric

, 1997
We use first-principles density-functional total energy and polarization calculations to calculate the piezoelectric tensor at zero temperature for both cubic and simple tetragonal ordered supercells of Pb_3GeTe_4.
A. Dal Corso, D. J. Singh, E. Cockayne, Eric Cockayne, G. B. Bachelet, G. Lucovsky, K. M. Rabe, K. M. Rabe, Karin M. Rabe, P. B. Littlewood, R. D. King-Smith, R. E. Cohen, S. Baroni, S. de Gironcoli, S. Takaoka, T. Suski, X. Gonze, Yu. A. Logachev   +17 more
core   +1 more source

Surface Modification of Fluorine‐Free Superhydrophobic Materials with (Ultra‐)Thin TiO2 Layers

Advanced Engineering Materials, EarlyView.
Significant changes in wettability, with a reduction of 60o in the water conduct angle, are reported via the surface modification of fluorine‐free superhydrophobic thin films, prepared by aerosol‐assisted chemical vapor deposition, after coating a 4 nm layer of titanium dioxide on the surface using atomic layer deposition.
Julie Jalila Kalmoni, Chris Blackman, Claire J Carmalt   +2 more
wiley   +1 more source

A comprehensive picture in the view of atomic scale on piezoelectricity of ZnO tunnel junctions: The first principles simulation

AIP Advances, 2016
Piezoelectricity is closely related with the performance and application of piezoelectric devices. It is a crucial issue to understand its detailed fundamental for designing functional devices with more peculiar performances.
Genghong Zhang, Weijin Chen, Jia Zhu, Gelei Jiang, Qiang Sheng, Biao Wang, Yue Zheng   +6 more
doaj   +1 more source

Application of Multi-Parameter Perturbation Method to Functionally-Graded, Thin, Circular Piezoelectric Plates

Mathematics, 2020
In this study, a multi-parameter perturbation method is used for the solution of a functionally-graded, thin, circular piezoelectric plate. First, by assuming that elastic, piezoelectric, and dielectric coefficients of the functionally-graded materials ...
Xiao-Ting He, Zhi-Xin Yang, Yang-Hui Li, Xue Li, Jun-Yi Sun   +4 more
doaj   +1 more source

Anion‐Dependent Polarization and Piezoelectric Power Generation in Hybrid Halide MAPbX3 (X = I, Br, and Cl) Thin Films with Out‐of‐Plane Structural Adjustments

Advanced Science, 2023
Anion‐dependent differences in the electromechanical energy harvesting capability of perovskite halides have not been experimentally demonstrated thus far.
Da Bin Kim, Kyeong Su Jo, Kwan Sik Park, Yong Soo Cho   +3 more
doaj   +1 more source

Origin of giant negative piezoelectricity in a layered van der Waals ferroelectric

Science Advances, 2019
Lattice topology and anisotropic chemical bonds underpin unusual negative longitudinal piezoelectricity in van der Waals solids. Recent research on piezoelectric materials is predominantly devoted to enhancing the piezoelectric coefficient, but overlooks
L. You, Yang Zhang, Shuang Zhou, A. Chaturvedi, S. Morris, Fucai Liu, L. Chang, Daichi Ichinose, H. Funakubo, Weijin Hu, Tom Wu, Zheng Liu, S. Dong, Junling Wang   +13 more
semanticscholar   +1 more source

Ultrahigh Piezoelectricity in Truss‐Based Ferroelectric Ceramics Metamaterials

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
By leveraging the unique combination of polarization direction and loading state, ultrahigh piezoelectricity is achieved through careful tuning of the relative density and scaling ratio in truss‐based ferroelectric metamaterials. This approach enables the simultaneous realization of extremely high piezoelectric constants and ultralow dielectric ...
Jiahao Shi, Kang Ju, Haoyu Chen, Valérie Orsat, Agus P. Sasmito, Ali Ahmadi, Abdolhamid Akbarzadeh   +6 more
wiley   +1 more source

Growth of Ca, Zr co-doped BaTiO3 lead-free ferroelectric single crystal and its room-temperature piezoelectricity

AIP Advances, 2017
Lead-free Ca, Zr co-doped BaTiO3 (BCZT) single crystal with a dimension up to 2mm×2mm×2mm was grown by a spontaneous nucleation technique using KF as the flux. The composition of the studied single crystal was defined to be Ba0.798Ca0.202Zr0.006Ti0.994O3,
Donglin Liu, Jaeshik Shim, Yue Sun, Qiang Li, Qingfen Yan   +4 more
doaj   +1 more source

Piezoelectricity: Quantized Charge Transport Driven by Adiabatic Deformations [PDF]

, 1996
We study the (zero temperature) quantum piezoelectric response of Harper-like models with broken inversion symmetry. The charge transport in these models is related to topological invariants (Chern numbers).
B. Simon, D. J. Thouless, D. J. Thouless, D. J. Thouless, D. Poilblanc, F. D. M. Haldane, G. E. Volovik, J. Bellissard, J. Berger, J. E. Avron, J. E. Avron, J. E. Avron, J. E. Avron, J. E. Avron, J. H. Han, J. von Neumann, J. Zak, L. Michel, M. V. Berry, P. Leboef, Q. Niu, R. D. King-Smith, R. E. Prange, R. Resta, S. P. Novikov, V. M. Yakovenko, W. G. Cady, Y. Last   +27 more
core   +3 more sources