Confocal scanning acoustic microscopy in air at normal conditions at frequencies close to the phonon cut-off regime

T. J. Kim; Z. Kojro; M. Pluta; M. Schmachtl; M. Schubert; T. Gudra; W. Grill

doi:10.1016/S0921-4526(98)01431-8

Confocal scanning acoustic microscopy in air at normal conditions at frequencies close to the phonon cut-off regime

T. J. Kim, Z. Kojro, M. Pluta, M. Schmachtl, M. Schubert, T. Gudra, W. Grill

Research output: Contribution to journal › Conference article › peer-review

5 Scopus citations

Abstract

A scanning acoustic microscope with phase and amplitude contrast (vector contrast) operating in air at normal conditions has been developed. Focusing transducers with and without impedance matching layers were manufactured and employed for the generation and spatially resolved detection of reflected or transmitted ultrasonic waves. Frequencies up to 11 MHz have been successfully employed. At 1.27 MHz a lateral resolution of about 220 μm is achieved. The distance resolution reaches 3 nm for 3 s total acquisition time in this case. It is in the vicinity of the average distance between the molecules in air at normal conditions. At 5 MHz a lateral resolution of about 60 μm was measured. Theoretical modelling of the focusing properties of the spherical transducer has been performed.

Original language	English (US)
Pages (from-to)	588-594
Number of pages	7
Journal	Physica B: Condensed Matter
Volume	263-264
DOIs	https://doi.org/10.1016/S0921-4526(98)01431-8
State	Published - Mar 1999
Externally published	Yes
Event	Proceedings of the 1998 9th International Conference on Phonon Scattering in Condensed Matter, PHONONS 98 - Lancaster, Great Britain Duration: Jul 26 1998 → Jul 31 1998

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4526(98)01431-8

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title = "Confocal scanning acoustic microscopy in air at normal conditions at frequencies close to the phonon cut-off regime",

abstract = "A scanning acoustic microscope with phase and amplitude contrast (vector contrast) operating in air at normal conditions has been developed. Focusing transducers with and without impedance matching layers were manufactured and employed for the generation and spatially resolved detection of reflected or transmitted ultrasonic waves. Frequencies up to 11 MHz have been successfully employed. At 1.27 MHz a lateral resolution of about 220 μm is achieved. The distance resolution reaches 3 nm for 3 s total acquisition time in this case. It is in the vicinity of the average distance between the molecules in air at normal conditions. At 5 MHz a lateral resolution of about 60 μm was measured. Theoretical modelling of the focusing properties of the spherical transducer has been performed.",

author = "Kim, {T. J.} and Z. Kojro and M. Pluta and M. Schmachtl and M. Schubert and T. Gudra and W. Grill",

year = "1999",

month = mar,

doi = "10.1016/S0921-4526(98)01431-8",

language = "English (US)",

volume = "263-264",

pages = "588--594",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

note = "Proceedings of the 1998 9th International Conference on Phonon Scattering in Condensed Matter, PHONONS 98 ; Conference date: 26-07-1998 Through 31-07-1998",

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T1 - Confocal scanning acoustic microscopy in air at normal conditions at frequencies close to the phonon cut-off regime

AU - Kim, T. J.

AU - Kojro, Z.

AU - Pluta, M.

AU - Schmachtl, M.

AU - Schubert, M.

AU - Gudra, T.

AU - Grill, W.

PY - 1999/3

Y1 - 1999/3

N2 - A scanning acoustic microscope with phase and amplitude contrast (vector contrast) operating in air at normal conditions has been developed. Focusing transducers with and without impedance matching layers were manufactured and employed for the generation and spatially resolved detection of reflected or transmitted ultrasonic waves. Frequencies up to 11 MHz have been successfully employed. At 1.27 MHz a lateral resolution of about 220 μm is achieved. The distance resolution reaches 3 nm for 3 s total acquisition time in this case. It is in the vicinity of the average distance between the molecules in air at normal conditions. At 5 MHz a lateral resolution of about 60 μm was measured. Theoretical modelling of the focusing properties of the spherical transducer has been performed.

AB - A scanning acoustic microscope with phase and amplitude contrast (vector contrast) operating in air at normal conditions has been developed. Focusing transducers with and without impedance matching layers were manufactured and employed for the generation and spatially resolved detection of reflected or transmitted ultrasonic waves. Frequencies up to 11 MHz have been successfully employed. At 1.27 MHz a lateral resolution of about 220 μm is achieved. The distance resolution reaches 3 nm for 3 s total acquisition time in this case. It is in the vicinity of the average distance between the molecules in air at normal conditions. At 5 MHz a lateral resolution of about 60 μm was measured. Theoretical modelling of the focusing properties of the spherical transducer has been performed.

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EP - 594

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

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T2 - Proceedings of the 1998 9th International Conference on Phonon Scattering in Condensed Matter, PHONONS 98

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