X-ray imaging of surface acoustic waves generated in semiconductor crystals by an external transducer

Shilo, D.; Lakin, E.; Zolotoyabko, E.; Härtwig, J.; Baruchel, J.
March 2003
Applied Physics Letters;3/3/2003, Vol. 82 Issue 9, p1374
Academic Journal
We demonstrate successful x-ray-diffraction imaging of high-frequency (0.29-GHz) surface acoustic waves (SAWs) propagating in semiconductor crystals (Si and GaAs) with no deposited electrodes on top of them. Experiments were performed at the ID19 beamline of the European Synchrotron Radiation Facility (Grenoble). We used the stroboscopic x-ray topography technique, in which x-ray bursts coming from the storage ring are synchronized with the excited acoustic waves. This technique is able to visualize individual acoustic wave fronts of traveling SAWs and their distortions caused by phonon scattering. In order to generate SAW in semiconductor crystals the latter were coupled to LiNbO[sub 3]-based SAW transducers via contact liquids. The maximum SAW transmission is achieved for evanescent waves under optimized coupling conditions at the liquid/sample interface. The technique developed opens a way to directly study phonon interaction with defects in nonpiezoelectric and weakly piezoelectric crystals.


Related Articles

  • Erratum.  // Journal of Applied Physics;2015, Vol. 118 Issue 4, p1 

    A correction to the article "Dynamic acoustic tractor beams," by F. G. Mitri, that was published in a 2015 issue of the periodical is presented.

  • Sensitivity of reflection transducers. Alcock, R. D.; Emmony, D. C. // Journal of Applied Physics;8/1/2002, Vol. 92 Issue 3, p1630 

    This article discusses the sensitivity of new high-speed optical transducers for measuring acoustic transients propagating in water. These devices are based upon the measurement of reflectance at a solid-water interface using a probe beam, perturbations in reflected intensity being brought about...

  • Aluminum Nitride In The Offing For Acoustic Sensing. Allan, Roger // Electronic Design;4/1/2002, Vol. 50 Issue 7, p27 

    Explores the use of aluminum nitride (AlN) as a piezoelectric material for acoustic sensing. Laser micromachining of AlN; Surface transwave and surface acoustic-wave detection capability of AlN; Properties of AIN making it suitable for biochemical sensing applications.

  • Multimode and multifrequency gigahertz surface acoustic wave sensors. Seidel, Werner; Hesjedal, Thorsten // Applied Physics Letters;2/23/2004, Vol. 84 Issue 8, p1407 

    A simple surface acoustic wave sensor system is presented that combines the advantages of multifrequency/multimode operation and GHz frequencies in a single acoustic device structure. Analyzing multiple frequencies and modes is the basis for the multicomponent analysis of gases and liquids. The...

  • Low-Frequency Acoustic Control of Physicomechanical Properties of Refractory Components. Moskovenko, I. B. // Refractories & Industrial Ceramics;Jul/Aug2004, Vol. 45 Issue 4, p289 

    Low-frequency acoustic methods for control of physicomechanical properties of refractory components using Zvuk-203M and Zvuk-110M instruments based on the measurement of natural oscillation frequencies excited in the specimen either by a shock (natural oscillation method) or by use of...

  • Measurement of Acoustic Power in Studying Cavitation Processes. Margulis, I. M.; Margulis, M. A. // Acoustical Physics;Nov2005, Vol. 51 Issue 6, p695 

    A comparative calorimetric method for measuring the acoustic power generated by a sound source under cavitation conditions and the power absorbed by a liquid with bubbles is developed. The conditions under which the whole of the generated power is absorbed by the liquid with bubbles are...

  • Modelling ultrasonic generation for Lorentz force EMATs. Jian, X.; Dixon, S.; Edwards, R. S. // Insight: Non-Destructive Testing & Condition Monitoring;Nov2004, Vol. 46 Issue 11, p671 

    A model for transient ultrasonic wave generation by Electromagnetic Acoustic Transducers (EMATs) is presented. Analytical solutions are currently available only for a few kinds of sources and the model combines these analytical solutions and numerical computation to predict the ultrasonic field...

  • Acousto-optic study of the unusual cases of reflection of bulk elastic waves in a paratellurite crystal. D'yakonov, E.; Voloshinov, V.; Polikarpova, N. // Acoustical Physics;Jan2012, Vol. 58 Issue 1, p107 

    The propagation and reflection of bulk ultrasonic waves in a paratellurite crystal have been investigated by the acousto-optic method. Simultaneous excitation of two acoustic waves by one piezoelectric transducer has been observed in a cell of complex, specially chosen configuration. Maximally...

  • trans·duc·er.  // American Heritage Student Science Dictionary;2009, p348 

    A definition for the term "transducer" is presented. It refers to a device that converts one type of energy into another. For example, the transducer in a microphone converts sound waves into electric impulses, while the transducer in a loudspeaker converts electrical impulses into sound waves.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics