Relevant bibliographies by topics / Acoustic waveguiding

Academic literature on the topic 'Acoustic waveguiding'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Acoustic waveguiding"

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Pyatnitsky, L. N. "Acoustic pulse in a wall-less waveguiding." Technical Physics Letters 28, no. 3 (March 2002): 246–49. http://dx.doi.org/10.1134/1.1467290.

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Jen, C. K., Z. Wang, J. F. Bussiere, A. Nicolle, E. L. Adler, and K. Abe. "Acoustic waveguiding rods with graded velocity profiles." Ultrasonics 30, no. 2 (March 1992): 91–94. http://dx.doi.org/10.1016/0041-624x(92)90040-s.

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Shen, Junyao, Sulei Fu, Qi Li, Cheng Song, Fei Zeng, and Feng Pan. "Simulation of temperature compensated waveguiding layer acoustic wave devices." Journal of Physics D: Applied Physics 52, no. 7 (December 13, 2018): 075105. http://dx.doi.org/10.1088/1361-6463/aaf37b.

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Wang, Zhen, Si-Yuan Yu, Fu-Kang Liu, Yuan Tian, Samit Kumar Gupta, Ming-Hui Lu, and Yan-Feng Chen. "Slow and robust plate acoustic waveguiding with valley-dependent pseudospins." Applied Physics Express 11, no. 10 (September 10, 2018): 107301. http://dx.doi.org/10.7567/apex.11.107301.

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Ghasemi Baboly, M., A. Raza, J. Brady, C. M. Reinke, Z. C. Leseman, and I. El-Kady. "Demonstration of acoustic waveguiding and tight bending in phononic crystals." Applied Physics Letters 109, no. 18 (October 31, 2016): 183504. http://dx.doi.org/10.1063/1.4966463.

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Babaee, Sahab, Johannes T. B. Overvelde, Elizabeth R. Chen, Vincent Tournat, and Katia Bertoldi. "Reconfigurable origami-inspired acoustic waveguides." Science Advances 2, no. 11 (November 2016): e1601019. http://dx.doi.org/10.1126/sciadv.1601019.

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We combine numerical simulations and experiments to design a new class of reconfigurable waveguides based on three-dimensional origami-inspired metamaterials. Our strategy builds on the fact that the rigid plates and hinges forming these structures define networks of tubes that can be easily reconfigured. As such, they provide an ideal platform to actively control and redirect the propagation of sound. We design reconfigurable systems that, depending on the externally applied deformation, can act as networks of waveguides oriented along one, two, or three preferential directions. Moreover, we demonstrate that the capability of the structure to guide and radiate acoustic energy along predefined directions can be easily switched on and off, as the networks of tubes are reversibly formed and disrupted. The proposed designs expand the ability of existing acoustic metamaterials and exploit complex waveguiding to enhance control over propagation and radiation of acoustic energy, opening avenues for the design of a new class of tunable acoustic functional systems.
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Ghasemi Baboly, M., C. M. Reinke, B. A. Griffin, I. El-Kady, and Z. C. Leseman. "Acoustic waveguiding in a silicon carbide phononic crystals at microwave frequencies." Applied Physics Letters 112, no. 10 (March 5, 2018): 103504. http://dx.doi.org/10.1063/1.5016380.

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El-atmani, Ilham, Ilyass El kadmiri, Aissam Khaled, Driss Bria, Mounsif Ech Cherif El Kettani, and Pierre Maréchal. "Acoustic Splitter Waves Based on Ramified System Made of Waveguides." E3S Web of Conferences 364 (2023): 04002. http://dx.doi.org/10.1051/e3sconf/202336404002.

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In this paper, we studied the propagation of acoustic waves in an acoustic ramified system. Our proposed system contains an input waveguide of length d0 and three output lines (three channels), each output line contains a semi-infinite waveguide. The theoretical analysis is based on the Transfer Matrix Method (TMM), which allows us to calculate the three transmission rates T1, T2, T3 and the reflection rate R. We demonstrate that our proposed three-output channels system can be used to design a multifunctional device that functions as an amplitude splitter: an incident sound wave is splited to three output channels. This system is capable of achieving various waveguiding characteristics with perfect channels transmissions.
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Le Brizoual, Laurent, Omar Elmazria, Sergei Zhgoon, Akram Soussou, Frederic Sarry, and Mohammed Abdou Djouadi. "AlN/ZnO/diamond waveguiding layer acoustic wave structure: Theoretical and experimental results." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 57, no. 8 (August 2010): 1818–24. http://dx.doi.org/10.1109/tuffc.2010.1620.

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Indaleeb, Mustahseen M., and Sourav Banerjee. "Simultaneous Dirac-like Cones at Two Energy States in Tunable Phononic Crystals: An Analytical and Numerical Study." Crystals 11, no. 12 (December 7, 2021): 1528. http://dx.doi.org/10.3390/cryst11121528.

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Simultaneous occurrence of Dirac-like cones at the center of the Brillouin zone (Γ) at two different energy states is termed Dual-Dirac-like cones (DDC) in this article. The occurrence of DDC is a rare phenomenon. Thus, the generation of multiple Dirac-like cones at the center of the Brillouin zone is usually non-manipulative and poses a challenge to achieve through traditional accidental degeneracy. However, if predictively created, DDC will have multiple engineering applications with acoustics and vibration. Thus, the possibilities of creating DDC have been identified herein using a simple square periodic array of tunable square phononic crystals (PnCs) in air media. It was found that antisymmetric deaf bands may play critical roles in tracking the DDC. Hence, pivoting on the deaf bands at two different energy states, an optimized tuning parameter was found to achieve Dirac-like cones at two distinct frequency states, simultaneously. Orthogonal wave transport identified as key Dirac phenomena was achieved at two frequencies, herein. It was identified that beyond the Dirac-like cone, the Dirac phenomena remain dominant when a doubly degenerated state created by a top band with positive curvature and a near-flat deaf band are lifted from a bottom band with negative curvature. Utilizing a mechanism of rotating the PnCs near a fixed deaf band, frequencies are tracked to form the DDC, and orthogonal wave transport is demonstrated. Exploiting the dispersion behavior, unique acoustic phenomena, such as ballistic wave transmission, pseudo diffusion and acoustic cloaking are also demonstrated at the Dirac frequencies using numerical simulation. The proposed tunable acoustic PnCs will have important applications in acoustic and ultrasonic imaging, waveguiding and even acoustic computing.
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Dissertations / Theses on the topic "Acoustic waveguiding"

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Al, lethawe Mohammed abdulridha. "Band gaps and waveguiding of surface acoustic waves in pillars-based phononics crystals." Thesis, Besançon, 2015. http://www.theses.fr/2015BESA2057.

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[…] Dans ce travail de thèse, nous nous sommes intéressés à ces bandes interdites et à ces modes de propagations dans le cas d’un cristal photonique constitué d’une matrice de piliers déposés en surface d’un milieu semi-fini. L’étude des interactions entre les piliers résonants localement avec la surface du milieu semi fini nous a permis d’identifier de nouveaux modes de propagation […]Nous avons également montré comment obtenir une réfraction négative omnidirectionnelle[…] La dernière partie de ce travail a été consacré à l’étude des mécanismes permettant la propagation et le confinement d’ondes guidées[…] .Nous avons également explicité les mécanismes qui permettent de crée ce type d’ondes guidées sub-longeur d’onde et le confinement des photons de surface
[...] We present the features of the interaction between surface acoustic wave and locally resonant pillar on the top of demi infinite medium. We shown that the photonic crystal we proposed possess an acoustic metamaterial feature for surface acoustic waves in the manner that pillars on the top of the surface introduce new guide modes in the non radiative region of the substrate outside sound cone. We also demonstrate the these guided modes are resonant modes that have frequencies greatly lower than those expected from the Bragg mechanism. […]
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Azodi, Aval Golnaz. "Phononic Crystal Waveguiding in GaAs." Thesis, 2013. http://hdl.handle.net/1974/8492.

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Compared to the much more common photonic crystals that are used to manipulate light, phononic crystals (PnCs) with inclusions in a lattice can be used to manipulate sound. While trying to propagate in a periodically structured media, acoustic waves may experience geometries in which propagation forward is totally forbidden. Furthermore, defects in the periodicity can be used to confine acoustic waves to follow complicated routes on a wavelength scale. Using advanced fabrication methods, we aim to implement these structures to control surface acoustic wave (SAW) propagation on the piezoelectric surface and eventually interact SAWs with quantum structures. To investigate the interaction of SAWs with periodic elastic structures, SAW interdigital transducers (IDTs) and PnC fabrication procedures were developed. GaAs is chosen as a piezoelectric substrate for SAWs propagation. Lift-off photolithography processes were used to fabricate IDTs with finger widths as low as 1.5 micron. PnCs are periodic structures of shallow air holes created in GaAs substrate by means of a wet-etching process. The PnCs are square lattices with lattice constants of 8 and 4 micron. To predict the behavior of a SAW when interacting with the PnC structures, an FDTD simulator was used to calculate the band structures and SAW wave displacement on the crystal surface. The bandgap (BG) predicted for the 8 micron crystal ranges from 180 MHz to 220 MHz. Simulations show a shift in the BG position for 4 micron crystals ranging from 391 to 439 MHz. Two main waveguide geometries were considered in this work: a simple line waveguide and a funneling entrance line waveguide. Simulations indicated an increase in acoustic power density for the funneling waveguides. Fabricated device evaluated with electrical measurements. In addition, a scanning Sagnac interferometer is used to map the energy density of the SAWs. The Sagnac interferometer is designed to measure the outward displacement of a surface due to the SAW. Interferometric measurements confirmed waveguiding in the modified funnel entrance waveguide embedded in the 4 micron PnC. However, they also revealed strong dissipation of the SAW in the waveguide due to the non-vertical sidewalls resulting from the wet-etch process.
Thesis (Master, Physics, Engineering Physics and Astronomy) -- Queen's University, 2013-11-29 15:53:46.369
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Book chapters on the topic "Acoustic waveguiding"

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Jen, C. K., Z. Wang, J. F. Bussiere, A. Nicolle, E. L. Adler, and K. Abe. "ACOUSTIC WAVEGUIDING RODS OF GRADED VELOCITY PROFILES." In Ultrasonics International 91, 251–55. Elsevier, 1991. http://dx.doi.org/10.1016/b978-0-7506-0389-8.50057-3.

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Conference papers on the topic "Acoustic waveguiding"

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Bhattacharjee, K., A. Shvetsov, and S. Zhgoon. "Packageless SAW Devices with Isolated Layer Acoustic Waves (ILAW) and Waveguiding Layer Acoustic Waves (WLAW)." In 2007 IEEE International Frequency Control Symposium Joint with the 21st European Frequency and Time Forum. IEEE, 2007. http://dx.doi.org/10.1109/freq.2007.4319049.

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Borulko, V. F. "Harmonic Middle-Domain Functions in Moment Method for Quasiperiodic Waveguiding Structures." In 2007 XIIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory. IEEE, 2007. http://dx.doi.org/10.1109/diped.2007.4373574.

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Hussein, Mahmoud I., Michael J. Leamy, and Massimo Ruzzene. "Wave Beaming in Nanostructured Materials With Engineered Defects." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68257.

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Recent advances in the fabrication of nanoscale material systems have made it possible to alter precisely the atomic structure in ways that enhance the properties and allow for certain functions to be realized. This work is concerned with two-dimensional periodic structures and emphasizes the effects of intentional defects on their wave propagation characteristics. In this draft paper, investigations are limited to a two-dimensional spring-mass lattice, composed of “super-cells” where mass inclusions are added to alter band-gap properties, as well as low frequency directionality. The presented results will then be extended to two-dimensional nanostructures, such as graphene nanosheets, in order to investigate their application as nanoscale acoustic waveguides, where engineered defects, uniformally distributed across the entire sheet, are introduced by design with the objective of rendering the medium anisotropic. Such anisoptropy leads to acoustic directionality, which can be exploited for waveguiding or acoustic-focusing purposes.
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Mir, Fariha, and Sourav Banerjee. "Performance of a Multifunctional Spiral Shaped Acoustic Metamaterial With Synchronized Low-Frequency Noise Filtering and Energy Harvesting Capability." In ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/smasis2020-2264.

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Abstract Metamaterials are man-made materials that behave uniquely and possess exclusively desired properties that are not found in natural materials. Usually, it is the combination of two or more materials and can be engineered to perform tasks that are not possible with traditional materials. These were initially discovered while working with electromagnetic radiation. Apart from electromagnetic radiation, metamaterials are also capable of affecting the wave propagation characteristics through any fluid such as air. These metamaterials are called acoustic metamaterials. Many acoustic metamaterials have gone beyond its definition but still, characterize the waveguiding properties. Incorporation of smart materials while constructing acoustic metamaterial, can achieve multifunctionality of the design. A prospective application field for such acoustic metamaterials is energy harvesting from low-frequency vibration. It is conceptualized that acoustic metamaterials can be used as noise barrier materials to filter roadside and industrial noise. This application can get extended to the aerospace application where engine noise mitigation inside the cabin is a challenge. In this article, a spiral-shaped acoustic metamaterial is modeled which has a dual function of noise filtering and energy harvesting. This acoustic metamaterial has a comparatively high reflection coefficient closer to the anti-resonance frequencies, resulting in high sound transmission loss. The filtered noise is trapped inside the cell in the form of strain energy. Hence, we claim that if the trapped energy which is any way wasted in the material could be harvested to power the local electronic devices, the new solution could make transformative for the 21st century’s green energy solution. Calculated placement of smart materials in the cell-matrix can help to extract the strain energy in the form of power. The acoustic metamaterial cell presented in this work has the capability of isolating noise and reducing diffraction by trapping sound in low frequencies and at the same time recover the trapped abundant energy in the form of electrical potential using piezoelectric materials. The spiral design is sensitive to vibration due to trampoline shaped attachments inside the cell. This makes it capable of harvesting energy using vibration also. This is a promising acoustoelastic metamaterial with multifunctionality properties for future applications.
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