Confocal scanning acoustic air microscope with phase contrast

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

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A scanning acoustic microscope with phase contrast (PSAM) operating in air at normal conditions has been developed. Spherical transducers with impedance matching layers were manufactured from piezoceramics and employed for the generation of focused ultrasonic waves and spatially resolved detection of reflected or transmitted waves. At 1.27 MHz a lateral resolution of about 220 μm is achieved. The distance resolution (in reflection) reaches 10 nm for 1 s total signal acquisition time. The instrument operates at a working distance of 11 mm with an aperture diameter of 18 mm.

Original languageEnglish (US)
Pages (from-to)513-516
Number of pages4
JournalUltrasonics
Volume36
Issue number1-5
DOIs
StatePublished - Jan 1 1998

Fingerprint

phase contrast
Transducers
Electric Impedance
Acoustics
Air
microscopes
acoustic microscopes
scanning
acoustics
impedance matching
air
reflected waves
ultrasonic radiation
acquisition
transducers
apertures
Ultrasonic Waves

Keywords

  • Phase contrast
  • Scanning acoustic microscopy
  • Ultrasonic transducer
  • Ultrasound in air

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Kojro, Z., Kim, T. J., Schmachtl, M., Schubert, M., Gudra, T., & Grill, W. (1998). Confocal scanning acoustic air microscope with phase contrast. Ultrasonics, 36(1-5), 513-516. https://doi.org/10.1016/S0041-624X(97)00083-8

Confocal scanning acoustic air microscope with phase contrast. / Kojro, Z.; Kim, T. J.; Schmachtl, M.; Schubert, Mathias; Gudra, T.; Grill, W.

In: Ultrasonics, Vol. 36, No. 1-5, 01.01.1998, p. 513-516.

Research output: Contribution to journalArticle

Kojro, Z, Kim, TJ, Schmachtl, M, Schubert, M, Gudra, T & Grill, W 1998, 'Confocal scanning acoustic air microscope with phase contrast', Ultrasonics, vol. 36, no. 1-5, pp. 513-516. https://doi.org/10.1016/S0041-624X(97)00083-8
Kojro, Z. ; Kim, T. J. ; Schmachtl, M. ; Schubert, Mathias ; Gudra, T. ; Grill, W. / Confocal scanning acoustic air microscope with phase contrast. In: Ultrasonics. 1998 ; Vol. 36, No. 1-5. pp. 513-516.
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