A new directional acoustic lens: V-groove lens

Simple item page
buir.contributor.authorAtalar, Abdullah
buir.contributor.authorKöymen, Hayrettin
buir.contributor.orcidAtalar, Abdullah|0000-0002-1903-1240
dc.citation.epage586en_US
dc.citation.spage583en_US
dc.contributor.authorBozkurt, Ayhanen_US
dc.contributor.authorYaralıoğlu, G. Gökseninen_US
dc.contributor.authorAtalar, Abdullahen_US
dc.contributor.authorKöymen, Hayrettinen_US
dc.coverage.spatialBaltimore, MD, USAen_US
dc.date.accessioned2016-02-08T12:02:01Z
dc.date.available2016-02-08T12:02:01Z
dc.date.issued1993en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.descriptionDate of Conference: 31 October-3 November 1993en_US
dc.descriptionConference Name: Ultrasonics Symposium, IEEE 1993en_US
dc.description.abstractA new directional acoustic lens is introduced. The geometry is very similar to the line-focus lens except the lens cavity, which is shaped as a groove with flat-bottom V cross section. The slanted planar edges of the groove are inclined in order to generate waves incident on the object surface at a critical angle. Hence, the edges of the groove act like two wedge transducers facing each other. The cross section of the lens is the same as that of the Lamb Wave Lens. Therefore, it enjoys the same sensitivity to surface wave excitations. On the other hand, since the cross section remains the same along one of the lateral directions, it has directional properties very similar to that of the Line Focus Beam Lens. The waves normally incident on the object surface generated from the flat-bottom, interfere with those at the critical angle, giving rise to a V(Z) effect. Calculated responses of the lens are presented for silicon (001) surface as a function of crystal orientation. The calculated curves are compared with measurement results. The leaky wave velocities are extracted from the measurement results using the conventional FFT algorithm. A new model based algorithm is proposed for extracting the velocity information from V(Z) data.en_US
dc.identifier.doi10.1109/ULTSYM.1993.339543en_US
dc.identifier.issn1051-0117
dc.identifier.urihttp://hdl.handle.net/11693/27800
dc.language.isoEnglishen_US
dc.publisherIEEEen_US
dc.relation.isversionofhttps://doi.org/10.1109/ULTSYM.1993.339543en_US
dc.source.titleProceedings of the Ultrasonics Symposium, IEEE 1993en_US
dc.subjectAcoustic transducersen_US
dc.subjectAcoustic wave velocityen_US
dc.subjectAlgorithmsen_US
dc.subjectCrystal orientationen_US
dc.subjectData reductionen_US
dc.subjectFast Fourier transformsen_US
dc.subjectFocusingen_US
dc.subjectFrequency responseen_US
dc.subjectGeometryen_US
dc.subjectLensesen_US
dc.subjectMathematical modelsen_US
dc.subjectSemiconducting siliconen_US
dc.subjectCritical angleen_US
dc.subjectDirectional acoustic lensesen_US
dc.subjectV groove lensen_US
dc.subjectV(Z) effecten_US
dc.subjectAcoustic devicesen_US
dc.titleA new directional acoustic lens: V-groove lensen_US
dc.typeConference Paperen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
New_directional_acoustic_lens-V-groove_lens.pdf
Size:
313.2 KB
Format:
Adobe Portable Document Format
Description:
Full printable version
Download

Collections

Department of Electrical and Electronics Engineering