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Статті в журналах з теми "Topological waves"
Hayran, Zeki, Seyyed Ali Hassani Gangaraj, and Francesco Monticone. "Topologically protected broadband rerouting of propagating waves around complex objects." Nanophotonics 8, no. 8 (May 9, 2019): 1371–78. http://dx.doi.org/10.1515/nanoph-2019-0075.
Повний текст джерелаOssi, Nicholas, Sathyanarayanan Chandramouli, Ziad H. Musslimani, and Konstantinos G. Makris. "Topological constant-intensity waves." Optics Letters 47, no. 4 (February 15, 2022): 1001. http://dx.doi.org/10.1364/ol.441942.
Повний текст джерелаAblowitz, Mark J., and Justin T. Cole. "Solitons and topological waves." Science 368, no. 6493 (May 21, 2020): 821–22. http://dx.doi.org/10.1126/science.abb5162.
Повний текст джерелаVan Mechelen, Todd, and Zubin Jacob. "Unidirectional Maxwellian spin waves." Nanophotonics 8, no. 8 (June 19, 2019): 1399–416. http://dx.doi.org/10.1515/nanoph-2019-0092.
Повний текст джерелаOri, Ottorino, Franco Cataldo, and Mihai V. Putz. "Topological Anisotropy of Stone-Wales Waves in Graphenic Fragments." International Journal of Molecular Sciences 12, no. 11 (November 15, 2011): 7934–49. http://dx.doi.org/10.3390/ijms12117934.
Повний текст джерелаGrocholski, Brent. "Fluid waves with topological origins." Science 358, no. 6366 (November 23, 2017): 1015.13–1017. http://dx.doi.org/10.1126/science.358.6366.1015-m.
Повний текст джерелаDelplace, Pierre, J. B. Marston, and Antoine Venaille. "Topological origin of equatorial waves." Science 358, no. 6366 (October 5, 2017): 1075–77. http://dx.doi.org/10.1126/science.aan8819.
Повний текст джерелаDarabi, Amir, Manuel Collet, and Michael J. Leamy. "Experimental realization of a reconfigurable electroacoustic topological insulator." Proceedings of the National Academy of Sciences 117, no. 28 (June 29, 2020): 16138–42. http://dx.doi.org/10.1073/pnas.1920549117.
Повний текст джерелаXing, Hongyang, Junxing Fan, Dan Lu, Zhen Gao, Perry Ping Shum, and Longqing Cong. "Terahertz Metamaterials for Free-Space and on-Chip Applications: From Active Metadevices to Topological Photonic Crystals." Advanced Devices & Instrumentation 2022 (August 4, 2022): 1–23. http://dx.doi.org/10.34133/2022/9852503.
Повний текст джерелаTang, Zehuan, Jiachao Xu, Bowei Wu, Shuanghuizhi Li, Fei Sun, Tingfeng Ma, Iren Kuznetsova, Ilya Nedospasov, Boyue Su, and Pengfei Kang. "Topological Valley Transport of Elastic Waves Based on Periodic Triangular-Lattices." Crystals 13, no. 1 (December 30, 2022): 67. http://dx.doi.org/10.3390/cryst13010067.
Повний текст джерелаДисертації з теми "Topological waves"
Krishna, Aditya. "Topological Imaging of Tubular Structures using Ultrasonic guided waves." Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0111.
Повний текст джерелаTubular structures are widely used in a variety of industries such as Aerospace, Oil and Gas, Nuclear, etc. Non Destructive Evaluation (NDE) of these structures plays a crucial role during it’s life cycle. In order to test large structures with limited accessibility, guided wave testing was developed as a viable solution. Due to the nature of these waves, they are able to propagate over large distances without losing much of their energy. However, they are also complex in that their velocity is frequency dependent i.e. they are dispersive. Conventionally, guided wave testing require costly finite element simulations. This thesis offers an alternative to such simulations with a quick and robust method to simulate guided wave propagation in tubular structures.Based on these calculations, the aim of this work is to obtain the 3d topological image of multilayered isotropic tubular structures using ultrasonic guided waves to locate defects. A mathematical model has been proposed where the wave equation is converted to an ordinary differential equation with respect to radius 'r' using the Fourier and Laplace transforms for the spatial and temporal variables respectively. The partial wave solution, expressed as a combination of Bessel’s functions, allows for the creation of a fast robust semi-analytical algorithm to compute the Green function in tubular structures. A model to approximate numerical defects is then developed. The defect response is considered as the cumulative response of secondary sources, aiming to negate the incident and diffracted stress field present within it. Next, the numerical model is validated with experimental measurements.Finally, the technique of Topological Imaging is introduced. This method of imaging is based on the idea of performing a correlation between two wave fields for defect localization. The versatility and flexibility of the numerical tool in conjunction with the method of imaging is then successfully demonstrated by localising and imaging a multitude of numerical and experimental defects with dimensions as low as 1=40th of the wavelength
Zheng, Li-Yang. "Granular monolayers : wave dynamics and topological properties." Thesis, Le Mans, 2017. http://www.theses.fr/2017LEMA1035/document.
Повний текст джерелаGranular crystals are spatially periodic structures of elastic particles arranged in crystal lattices. The interactions between particles take place via their elastic interconnections, which are of much smaller dimensions and weights than the beads. This induces propagation of elastic waves in granular structures at significantly slower velocities than in the individual grains. In addition, due to the existence of non-central shear forces, rotations of particles can be initiated, leading to extra phononic modes in the crystals. In the manuscript, wave dynamics in two-dimensional monolayer granular crystals with either out-of-plane or in-plane particle motion is studied. The phononic properties are investigated, including Dirac points, zero-frequency modes, zero-group-velocity modes and their transformation into slow propagating phononic modes. Furthermore, in the presence of edges/boundaries, zero-frequency and extremely slow elastic edge waves can be also predicted in mechanical granular honeycomb crystals (granular graphene). In addition, topological properties of rotational edge waves in a granular graphene are theoretically demonstrated. By inducing topological transition, which turns the topological order of granular graphene from trivial to nontrivial, topological edge transport in the granular graphene can be observed. The developed theories could promote the potential applications of designed granular structures with novel elastic wave propagation properties
Deymier, Pierre, and Keith Runge. "One-Dimensional Mass-Spring Chains Supporting Elastic Waves with Non-Conventional Topology." MDPI AG, 2016. http://hdl.handle.net/10150/615109.
Повний текст джерелаWang, Wei. "Manipulation of Lamb waves with elastic metamaterials." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS414.
Повний текст джерелаWe develop elastic pillared metamaterials to manipulate Lamb waves. Firstly, the negative properties associated with bending, compression and torsion resonances in two structures consisting of pillars on one side of a thin plate are examined. We describe in details two different mechanisms at the origin of doubly negative property. The potential of these structures for negative refraction of Lamb waves and acoustic cloaking is demonstrated numerically. Secondly, we present the topologically protected transport of Lamb waves by analogy with quantum spin and valley quantum Hall effects. By rearranging the previous structures into a honeycomb network, a single Dirac cone and a double Dirac cone are introduced. We discuss the appearance of topologically valley-protected edge states in an asymmetrical double-sided pillar structure. The unidirectional propagation of edge states on different domain walls is studied. In addition, we consider a symmetrical double-sided system allowing the separation of the symmetric and antisymmetric modes. Combined edge states protected topologically by pseudospin and pseudospin-valley degree of freedom are demonstrated. Third, we propose an approach to actively control the transmission of the antisymmetric Lamb wave propagating through an infinite line of pillars. Two different situations with bending and compression resonances respectively separated or superimposed are studied. External tensile force and pressure are applied to the pillars, which allows them to couple with the bending and compressive vibrations. The transmission is studied as a function of the amplitude and the relative phase of the external sources
Dennis, Mark Richard. "Topological singularities in wave fields." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391183.
Повний текст джерелаHafidi, Alaoui Hamza. "Imagerie topologique ultrasonore des milieux périodiques." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0388/document.
Повний текст джерелаThe detection, localization and monitoring of the evolution of defects in periodic media and waveguides is a major issue in the field of Non-Destructive Testing (NDT). Wave propagation in such media is complex, for example when the velocity depends on the frequency (dispersion) or direction of propagation (anisotropy). The signature of the defect can also be "embedded" in the acoustic field reflected by the structure (reverberation or multiple diffusion). It is to answer these stakes of the size that the Topological Optimization (TO) has been adapted to the problems of diffraction of the acoustic waves by infinitesimal defects in order to obtain reflectivity images of the inspected media. The method can be applied to all kinds of media, regardless of their complexity, provided an exact simulation of the wave propagation in a reference medium (without defects) is performed. Inspired by the TO, the work of this thesis proposes to implement qualitative imaging methods adapted to the specificities of Phononic Crystals (PC) and waveguides. First, we focus on the description of the mathematical formalism of Topological Optimization and Full-Waveform Inversion (FWI). Although these methods do not try to solve the same inverse problems, we highlight their similarities. In a second step, we apply Topological Imaging (TI) to the inspection in pulse-echo configuration of weakly heterogeneous media. Thirdly, we draw inspiration from TI to define a new variant of this method called Hybrid Topological Imaging (HTI).We apply these methods for the pulse-echo configuration inspection of PCs created by steel rods immersed in water.We compare the performance of these methods according to the kind of defects in the PC. Numerical simulations for some case studies are supported by conclusive experimental trials. In a fourth step, we adapt the TI to a pitch-catch configuration in order to implement a new method of Structural Health Monitoring (SHM) of waveguides. In this regard, we have developed a new imaging method that is better suited than TI to pitch-catch configurations
Larocque, Hugo. "Generation and Characterization of Topologically Structured Waves." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37857.
Повний текст джерелаBungey, Timothy N. "Topological configurations of coronal magnetic fields and current sheets." Thesis, University of St Andrews, 1996. http://hdl.handle.net/10023/14021.
Повний текст джерелаRieder, Maria-Theresa [Verfasser]. "On Topological Phases in Disordered P-wave Superconducting Wires / Maria-Theresa Rieder." Berlin : Freie Universität Berlin, 2015. http://d-nb.info/1076038816/34.
Повний текст джерелаSaputo, Roberto. "Two dimensional P-wave superconductors with long range interactions." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16315/.
Повний текст джерелаКниги з теми "Topological waves"
Paolo, Soriani, ed. The N=2 wonderland: From Calabi-Yau manifolds to topological field-theories. Singapore: World Scientific Pub., 1995.
Знайти повний текст джерелаservice), SpringerLink (Online, ed. Nonlinear Waves and Solitons on Contours and Closed Surfaces. 2nd ed. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012.
Знайти повний текст джерелаM, Gusein-Zade S., Varchenko A. N, and SpringerLink (Online service), eds. Singularities of Differentiable Maps, Volume 1: Classification of Critical Points, Caustics and Wave Fronts. Boston: Birkhäuser Boston, 2012.
Знайти повний текст джерелаFre, Pietro, and Paolo Soriani. The N=2 Wonderland: From Calabi-Yau Manifolds to Topological Field Theories. World Scientific Publishing Company, 1995.
Знайти повний текст джерелаLudu, Andrei. Nonlinear Waves and Solitons on Contours and Closed Surfaces. Springer International Publishing AG, 2022.
Знайти повний текст джерелаLudu, Andrei. Nonlinear Waves and Solitons on Contours and Closed Surfaces. Springer, 2010.
Знайти повний текст джерелаLudu, Andrei. Nonlinear Waves and Solitons on Contours and Closed Surfaces. Springer, 2014.
Знайти повний текст джерелаLudu, Andrei. Nonlinear Waves and Solitons on Contours and Closed Surfaces. Springer, 2012.
Знайти повний текст джерелаLudu, Andrei. Nonlinear Waves and Solitons on Contours and Closed Surfaces. Springer, 2010.
Знайти повний текст джерелаLudu, Andrei. Nonlinear Waves and Solitons on Contours and Closed Surfaces. Springer London, Limited, 2007.
Знайти повний текст джерелаЧастини книг з теми "Topological waves"
Zheleznyak, A. L. "An Approach to the Computation of the Topological Entropy." In Nonlinear Waves 3, 301–6. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-75308-4_28.
Повний текст джерелаGan, Woon Siong. "Topology in Acoustics and Topological Sound Waves." In Time Reversal Acoustics, 77–82. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3235-8_11.
Повний текст джерелаTurner, R. E. L. "Traveling Waves in Natural Systems." In Variational and Topological Methods in the Study of Nonlinear Phenomena, 115–31. Boston, MA: Birkhäuser Boston, 2002. http://dx.doi.org/10.1007/978-1-4612-0081-9_9.
Повний текст джерелаBonnet, Marc, Bojan B. Guzina, and Sylvain Nintcheu Fata. "Underground Cavity Detection Based on Elastodynamic Boundary Element and Topological Derivative Approaches." In Mathematical and Numerical Aspects of Wave Propagation WAVES 2003, 582–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-55856-6_94.
Повний текст джерелаBelishev, M., and A. Glasman. "Boundary Control of the Maxwell Dynamical System: Lack of Controllability by Topological Reasons." In Mathematical and Numerical Aspects of Wave Propagation WAVES 2003, 177–82. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-55856-6_28.
Повний текст джерелаBeyn, Wolf-Jürgen, and Denny Otten. "Computation and stability of waves in equivariant evolution equations." In Spectral Structures and Topological Methods in Mathematics, 129–58. Zuerich, Switzerland: European Mathematical Society Publishing House, 2019. http://dx.doi.org/10.4171/197-1/6.
Повний текст джерелаEzersky, A. B., S. V. Kiyashko, and A. V. Nazarovsky. "Chaotic Dynamics of Topological Defects in Parametrically Excited Waves." In Nonlinearity and Disorder: Theory and Applications, 239–53. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0542-5_19.
Повний текст джерелаHussain, Fazle, and Mogens V. Melander. "New Aspects of Vortex Dynamics: Helical Waves, Core Dynamics, Viscous Helicity Generation, and Interaction with Turbulence." In Topological Aspects of the Dynamics of Fluids and Plasmas, 377–99. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-017-3550-6_22.
Повний текст джерелаElphick, Christian. "Solitary Waves, Topological Defects, and their Interactions in Systems with Translational and Galilean Invariance." In Instabilities and Nonequilibrium Structures III, 321–29. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3442-2_31.
Повний текст джерелаBrison, Jean-Pascal. "p-Wave Superconductivity and d-Vector Representation." In Springer Proceedings in Physics, 165–204. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64623-3_6.
Повний текст джерелаТези доповідей конференцій з теми "Topological waves"
Dorin, Patrick, Xiang Liu, and K. W. Wang. "Tunable Topological Wave Control in a Three-Dimensional Metastable Elastic Metamaterial." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-69410.
Повний текст джерелаMarcucci, Giulia, Davide Pierangeli, Aharon J. Agranat, Eugenio DelRe, and Claudio Conti. "Topological Control of Optical Nonlinear Waves." In 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, 2019. http://dx.doi.org/10.1109/cleoe-eqec.2019.8872243.
Повний текст джерелаMarcucci, Giulia, Davide Pierangeli, Aharon J. Agranat, Ray-Kuang Lee, Eugenio DelRe, and Claudio Conti. "Topological Control of Optical Extreme Waves." In Nonlinear Optics. Washington, D.C.: OSA, 2019. http://dx.doi.org/10.1364/nlo.2019.ntu2a.3.
Повний текст джерелаSounas, D. L., and A. Alu. "Piezoelectric Topological Insulators for Acoustic Waves." In 2018 12th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials). IEEE, 2018. http://dx.doi.org/10.1109/metamaterials.2018.8534134.
Повний текст джерелаBisharat, D., S. Kandil, X. Kong, S. Singh, Z. Xu, and D. Sievenpiper. "Chiral and Topological Surface Waves and Line Waves on Metasurfaces." In 2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials). IEEE, 2019. http://dx.doi.org/10.1109/metamaterials.2019.8900837.
Повний текст джерелаMATSUURA, T., K. INAGAKI, S. TANDA, T. TSUNETA, and Y. OKAJIMA. "TRANSPORT MEASUREMENT FOR TOPOLOGICAL CHARGE DENSITY WAVES." In Proceedings of the 1st International Symposium on TOP2005. WORLD SCIENTIFIC, 2006. http://dx.doi.org/10.1142/9789812772879_0008.
Повний текст джерелаBisharat, Dia'aadlin J., and Daniel F. Sievenpiper. "Topological Metasurfaces for Robust One-dimensional Waves." In 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting. IEEE, 2019. http://dx.doi.org/10.1109/apusncursinrsm.2019.8888514.
Повний текст джерелаZhang, Chao, Shou-guo Yan, Bi-xing Zhang, and Wen-han Lv. "Topological imaging in layered plate by guided waves." In 2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA). IEEE, 2016. http://dx.doi.org/10.1109/spawda.2016.7829952.
Повний текст джерелаChen, Hui, Hussein Nassar, and Guoliang Huang. "Elastic waves in Floquet topological insulators (Conference Presentation)." In Health Monitoring of Structural and Biological Systems XIII, edited by Paul Fromme. SPIE, 2019. http://dx.doi.org/10.1117/12.2514367.
Повний текст джерелаBisharat, Dia'aaldin J., and Daniel F. Sievenpiper. "Topological metasurfaces for symmetry-protected electromagnetic line waves." In Metamaterials, Metadevices, and Metasystems 2019, edited by Nader Engheta, Mikhail A. Noginov, and Nikolay I. Zheludev. SPIE, 2019. http://dx.doi.org/10.1117/12.2529727.
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