Thèses sur le sujet « Surface acoustics wave »
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Chiu, Ching-Sang Denner Warren W. « Report on the Office of Naval Research USA-China Conference on Shallow Water Acoustics, December 18-21, 1995 ». Monterey, CA : Naval Postgraduate School, 1997. http://catalog.hathitrust.org/api/volumes/oclc/37486128.html.
Texte intégralHughes, Adrian. « Transduction and guidance by narrow aperture surface acoustic wave structures ». Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236172.
Texte intégralBlake, Christina Diane. « Narrow apperture surface acoustic wave transducers and their application in spectrum analysis ». Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329903.
Texte intégralBuchine, Brent Alan. « Acoustics in nanotechnology : manipulation, device application and modeling ». Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/26542.
Texte intégralCommittee Chair: Wang, Zhong Lin; Committee Member: Degertekin, F. Levent; Committee Member: Liu, Meilin; Committee Member: Snyder, Robert L.; Committee Member: Tannenbaum, Rina. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Du, Xinpeng. « Laser-Ultrasonic Measurement of Single-Crystal Elastic Constants from Polycrystalline Samples by Measuring and Modeling Surface Acoustic Wave Velocities ». The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1524177819455643.
Texte intégralFreed, Shaun L. « High Resolution Ultrasonic Rayleigh Wave Interrogation of a Thermally Aged Polymeric Surface ». University of Dayton / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1291685460.
Texte intégralBlimbaum, Jordan Matthew. « Finite element analysis of acoustic wave transverse to longitudinal coupling during transverse combustion instability ». Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44757.
Texte intégralHaskell, Reichl B. « A Surface Acoustic Wave Mercury Vapor Sensor ». Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/HaskellRB2003.pdf.
Texte intégralWang, TingTing. « Acoustic / elastic wave propagation in coupled-resonator waveguides ». Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCD061.
Texte intégralWhen a defect is introduced into a phononic crystal, states localized at the defect appear in the band gaps. They decay rapidly far away from the defect. Therefore, it is possible to localize and guide wave propagation by designing defects in the perfect phononic crystal. Coupled-resonator waveguides based on the coupling effect between a sequence of defect cavities have simultaneously strong wave confinement and low group velocity, and can be used to design rather arbitrary circuits. Furthermore, the propagation of elastic waves in a solid matrix can be controlled through changing fluid fillings based on fluid-solid interaction. Thus, they have essential applications in vibration reduction and noise isolation. In this thesis, the acoustic and elastic waves propagating in both periodic and aperiodic coupled-resonator waveguides are investigated. The fluid-solid interaction in fluid/solid phononic crystals is studied. The work is conducted by combining numerical simulations, theoretical model analysis and experimental investigations
Riaud, Antoine Jean-Pierre René. « Etude des potentialités offertes par la synthèse de champs d'ondes acoustiques de surface pour l'actionnement de liquides et la manipulation sans contact ». Thesis, Ecole centrale de Lille, 2016. http://www.theses.fr/2016ECLI0010/document.
Texte intégralWhen surface acoustic waves radiate in nearby fluids, they trigger two nonlinear effects: acoustic radiation pressure and acoustic streaming. These two effects find numerous applications for digital microfluidics, contactless manipulation and biological cell sorting. Nonetheless, these systems face two limitations. On the one hand, each application requires a specific acoustic wave: there is no multifunction device so far. On the other hand, search for functionalities offered by simple surface acoustic waves (plane and focused waves) has failed to provide a selective tweezers able to manipulate individual particles or cells independently of their neighbors. In the first part of this thesis, we develop two methods to synthesize complex surface acoustic wave fields. The first one employs an array of 32 interdigitated transducers controlled by the inverse filter to generate arbitrary fields on demand. The second method solves an inverse problem to design a holographic transducer to generate a predefined field. In the second part of the thesis, we use the inverse filter to (i) implement a multifunction lab on a chip and (ii) investigate the potentialities of a special type of surface acoustic waves called swirling surface waves. These waves enable a selective and contactless manipulation of microscopic objects. We conclude the thesis by integrating a holographic acoustical vortex transducer on a microscope in order to selectively manipulate biological cells without contact
Kumon, Ronald Edward. « Nonlinear surface acoustic waves in cubic crystals / ». Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Texte intégralTan, Lin. « Development of micro-acoustic devices with applications of viscous effects ». Diss., Online access via UMI:, 2006.
Trouver le texte intégralHong, Stanley Seokjong 1977. « Surface acoustic wave optical modulation ». Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86715.
Texte intégralIncludes bibliographical references (leaves 50-54).
by Stanley Seokjong Hong.
M.Eng.
Sen, Rahul. « Acoustic scattering by discontinuities in waveguides ». Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/81021.
Texte intégralPh. D.
Hay, Robert Russell. « Digitally-tunable surface acoustic wave resonator ». [Boise, Idaho] : Boise State University, 2009. http://scholarworks.boisestate.edu/td/58/.
Texte intégralMcNeil, Robert Peter Gordon. « Surface acoustic wave quantum electronic devices ». Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610718.
Texte intégralKaplan, Emrah. « Surface acoustic wave enhanced electroanalytical sensors ». Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6557/.
Texte intégralReese, Owein. « Homogenization of acoustic wave propagation in a magnetorheological fluid ». Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0430104-101629.
Texte intégralLin, Yiqiang Farouk Bakhtier. « Acoustic wave induced convection and transport in gases under normal and micro-gravity conditions / ». Philadelphia, Pa. : Drexel University, 2007. http://hdl.handle.net/1860/1795.
Texte intégralKenny, Thomas Donald. « Identification of High-Velocity Pseudo-surface Acoustic Wave Substrate Orientations and Modeling of Surface Acoustic Wave Structures ». Fogler Library, University of Maine, 2011. http://www.library.umaine.edu/theses/pdf/KennyT2011.pdf.
Texte intégralRinker, Brett A. « A single-sided access simultaneous solution of acoustic wave speed and sample thickness for isotropic materials of plate-type geometry ». Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4585.
Texte intégralThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 17, 2009) Vita. Includes bibliographical references.
Gizeli, Electra. « New acoustic wave sensor geometries ». Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282004.
Texte intégralSchlottmann, Robert Brian. « A path integral formulation of elastic wave propagation / ». Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004372.
Texte intégralBright, Victor M. « Shear horizontal surface acoustic waves ». Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/14831.
Texte intégralThorn, Adam Leslie. « Electron dynamics in surface acoustic wave devices ». Thesis, University of Cambridge, 2009. https://www.repository.cam.ac.uk/handle/1810/224176.
Texte intégralAstley, Michael Robert. « Surface-acoustic-wave-defined dynamic quantum dots ». Thesis, University of Cambridge, 2008. https://www.repository.cam.ac.uk/handle/1810/261973.
Texte intégralDu, X. « Surface acoustic wave devices for microfluidic applications ». Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598662.
Texte intégralGell, Jennifer Rachel. « Surface-acoustic-wave (SAW) driven light sources ». Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599350.
Texte intégralSehra, Gurmukh S. « Surface acoustic wave based flavour sensor system ». Thesis, University of Warwick, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416148.
Texte intégralMeng, Qingbin. « Surface acoustic wave controlled semiconductor optical source ». Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518122.
Texte intégralThe FISOS is analyzed as two sub-divisions, optical source and acoustic processor, which have the common substrate structure. The optical beams excited from the optical source part of the device undergoes a scattering in the Bragg grating formed by SAWs that are generated by an IDT positioned on top of the acoustic processing part of device. By altering the property (power, frequency, etc.) of the SAW, versatile functionalities such as modulation, filtering, beam steering and so on of the optical beams can be realized in this optical source device.
A multilayer structure based on GaN/InGaN MQWs grown on sapphire is designed for the FISOS to be blue light emitting and efficiently launching SAWs. An etch-down technique employed in the SAW processing part is taken to improve the overlap between the optical and acoustic waves and then the interaction efficiency. Optimizations to the geometrical dimensions of the FISOS, such the width of the ridge waveguide, the position of the IDT and the etching depth, etc., are discussed in the given structure.
Numerical models are investigated to access the operational characteristics and then to provide design guidelines for the proposed integrated device. The Bragg diffraction of optical waves occurring within the acoustic waves in the proposed structure are simulated as a two-dimensional interaction between two guided optical modes and an acoustic surface wave.
The modal distributions and propagation velocities of SAWs in a multilayer system are calculated using Adler’s matrix method. The electrical characteristics of an IDT, such as impedance, insertion loss, electromechanical constant and so on are also discussed.
Transverse and lateral optical modes in the given multilayer structure are analyzed by the transfer matrix method. The interaction of optical waves and acoustic waves are modeled using the rigorous grating diffraction theory. Starting from Floquet’s theory, the well-known coupled-wave method and modal method can both be derived from the rigorous grating diffraction theory. Discussions of some useful approximate methods are also presented. In this thesis, the simulations of the acoustooptic interaction are performed using the coupled-wave method.
From the simulation results, the angular distribution profile and spatial profile of the output of the FISOS are evaluated. An improvement to the expression of the diffraction efficiency in such an integrated device is proposed. The so-called beam diffraction efficiency gives a more complete measure to the acoustooptic diffraction and is used to investigate the features of FISOS different from conventional acoustooptic devices. Contour plots of the beam efficiency varying with acoustic frequency and power in a FISOS is demonstrated to be a convenient and powerful approach in the device design.
The operational performances of an integrated deflector and a modulator in FISOS are analyzed to investigate the feasibility of FISOS. The trade-off of the efficiency-resolution in an integrated deflector design is discussed. Short interaction length, high acoustic frequency and narrow ridge are proved to be helpful for a larger number of resolvable spots with a fairly high efficiency. In the case of the integrated modulator, given that the figure of merit Q is fixed, it is demonstrated that the smaller the Q, the longer the interaction length, larger ridge width and lower acoustic frequency will give rise to a larger bandwidth, though the highest efficiency might appear at a higher frequency.
Some practical issues such as the misalignment of planar elements on the device and the incoherence of the integrated optical source are also discussed. A modified working frequency can be used to compensate the efficiency loss in the former case; in the latter case, it is demonstrated that a distortion of beam diffraction efficiency versus acoustic power with an incoherent optical source arises due to the wide spectrum of the incident optical waves.
Ead, Richard M. « Predicting the effects of sea surface scatter on broad band pulse propagation with an ocean acoustic parabolic equation model ». Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FEad.pdf.
Texte intégralBanerjee, Markus K. « Acoustic wave interactions with viscous liquids spreading in the acoustic path of a surface acoustic wave sensor ». Thesis, Nottingham Trent University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302521.
Texte intégralKitabayashi, Hiroyuki. « Surface acoustic wave filters on diamond layered structures / ». *McMaster only, 2001.
Trouver le texte intégralAlghane, Mansuor Mohamed. « Surface acoustic wave streaming in a microfluidic system ». Thesis, Heriot-Watt University, 2013. http://hdl.handle.net/10399/2645.
Texte intégralKhalid, Muhammad Arslan. « Engineering surface acoustic wave sensing and diagnostic devices ». Thesis, University of Glasgow, 2017. http://theses.gla.ac.uk/30999/.
Texte intégralFriedlander, Jeffrey B. « Wireless Strain Measurement with Surface Acoustic Wave Sensors ». The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306874020.
Texte intégralTew, R. « Imaging theory of surface-breaking discontinuities ». Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380008.
Texte intégralGross, Johann. « Evaluation of near surface material degradation in concrete using nonlinear Rayleigh surface waves ». Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45810.
Texte intégralKavalov, Dimitar A. « Surface acoustic wave neural networks for RF signal processing ». Thesis, Oxford Brookes University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249406.
Texte intégralKim, Yoonkee. « Surface acoustic wave propagation in multilayered and multichannel waveguide structures ». Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/15060.
Texte intégralRostad, Torbjørn. « Optical Detection of Surface Acoustic Waves ». Thesis, Norwegian University of Science and Technology, Department of Electronics and Telecommunications, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9487.
Texte intégralThis project was worked on during the autumn 2005 at the Norwegian University of Science and Technology, Department of Electronics and Telecommunications. The assignment was to write a new LabVIEW programme that is to run the measurement procedure of a laser probe setup. The setup is used in characterization of surface acoustic waves(SAW). A programme was written that contained the necessary functionality and proved to operate satisfactorily. Several measurements were made on a SAW transducer, accurately picturing the wave. Fourier analysis were performed on the collected data in order to separate the propagation directions. An absolute amplitude measurement was made on a heterodyne interferometer, and the result was compared to a similar scan made using the laser probe. The work shows that the setup is ready for calibration against the heterodyne interferometer, in order to enable the laser probe to measure absolute amplitude by itself.
Mutti, Paolo. « Surface acoustic waves for semiconductor characterization ». Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357598.
Texte intégralHarvey, Alan Paul. « Nonlinear surface acoustic waves and applications ». Thesis, University of Southampton, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.255827.
Texte intégralFurnell, G. D. « A study of acoustic wave propagation within curved ducting systems / ». Title page, table of contents and abstract only, 1989. http://web4.library.adelaide.edu.au/theses/09PH/09phf987.pdf.
Texte intégralTerrill, Eric J. « Acoustic measurements of air entrainment by breaking waves / ». Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1998. http://wwwlib.umi.com/cr/ucsd/fullcit?p9907829.
Texte intégralNash, Geoffrey Richard. « Surface acoustic wave investigations of low dimensional electron systems ». Thesis, University of Bath, 1996. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320474.
Texte intégralBeaucage, Timothy Ray. « High Temperature LGT Expansion Measurements through Multiple Techniques ». Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/BeaucageTR2007.pdf.
Texte intégralCameron, Thomas P. (Thomas Philip) Carleton University Dissertation Engineering Electrical. « Circuit factor compensation for saw filters using modal analysis ». Ottawa, 1988.
Trouver le texte intégralBerry, David Leonard. « Acoustic scattering by near-surface inhomogeneities in porous media ». Thesis, Open University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254021.
Texte intégralSwacek, Christian Bernhard. « Optical generation of tone-burst Rayleigh surface waves for nonlinear ultrasonic measurements ». Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45812.
Texte intégral