Browsing by Keywords "Acoustic transducers"

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    • Microfabricated ultrasonic transducers: towards robust models and immersion devices 

      Ladabaum, I.; Jin, X.; Soh, H. T.; Pierre, F.; Atalar, Abdullah; Khuri-Yakub, B. T. (IEEE, 1996-11)
      The successful fabrication of ultrasonic immersion transducers is reported. Transducers are observed to operate from 1 MHz to 20 MHz in water, with the frequency range limited by electronics, not the transducers. Transmission ...

    • Micromachinable leaky wave air transducers 

      Degertekin, F. L.; Atalar, Abdullah; Khuri-Yakub, B. T. (IEEE, 1997-11)
      In this paper, ultrasonic air transducers which use the lowest order antisymmetric (A/sub 0/) mode Lamb waves in a thin plate as a means of efficient coupling of ultrasonic energy to air are discussed. For a silicon plate ...

    • New directional acoustic lens: V-groove lens 

      Bozkurt, A.; Yarahoglu, G.; Atalar, Abdullah; Koymen, H. (IEEE, 1993)
      A 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 ...

    • Synthetic aperture imaging system using surface wave modes 

      Bozkurt, A.; Arikan, O.; Atalar, Abdullah (IEEE, 1995)
      A synthetic aperture acoustic imaging system with a novel inversion algorithm is described. Data is obtained by using a transducer insonifying the sample surface at a critical angle which is excited by a short electrical ...

    • A wideband and a Wide-Beamwidth acoustic transducer design for underwater acoustic communications 

      Elmasli, I. C.; Köymen, H. (IEEE, 2007)
      This paper is concerned with the design of an efficient, wideband and a wide-beamwidth resonant acoustic transducer for high frequency use. The general transducer structure which has two back-to-back quarter wave thick 1-3 ...