Now showing items 1-5 of 5

    • Approximate fourier domain expression for bloch-siegert shift 

      Turk, E. A.; Ider, Y. Z.; Ergun, A. S.; Atalar, Ergin (John Wiley and Sons Inc., 2015)
      Purpose: In this study, a newsimple Fourier domain-based analytical expression for the Bloch-Siegert (BS) shift-based B1 mapping method is proposed to obtain |B1+| more accurately while using short BS pulse durations and ...
    • Frequency optimization in high intensity focused ultrasound 

      Yetik, H.; Arıyurek, Cemre; Bozkurt, A.; Ergun, A. S. (IEEE, 2014-09)
      In high intensity focused ultrasound (HIFU) the choice of transducer frequency depends on the target depth and tissue type. At high frequencies attenuation does not permit enough acoustical power to be transmitted to the ...
    • A new detection method for capacitive micromachine ultrasonic transducers 

      Ergun, A. S.; Temelkuran, B.; Özbay, Ekmel; Atalar, Abdullah (IEEE, 2001)
      Capacitive micromachine ultrasonic transducers (cMUT) have become an alternative to piezoelectric transducers in the past few years. They consist of many small circular membranes that are connected in parallel. In this ...
    • A new detection method for capacitive micromachined ultrasonic transducers 

      Ergun, A. S.; Temelkuran, B.; Özbay, Ekmel; Atalar, Abdullah (IEEE, 1998)
      Capacitive micromachined ultrasonic transducers (cMUT) have become an alternative to piezoelectric transducers in the past few years. They usually consist of many small membranes all in parallel. In this work we report a ...
    • A sensitive detection method for capacitive ultrasonic transducers 

      Ergun, A. S.; Atalar, Abdullah; Temelkuran, B.; Özbay, Ekmel (American Institute of Physics, 1998-06-08)
      We report a sensitive detection method for capacitive ultrasonic transducers. Detection experiments at 1.6 MHz reveal a minimum detectable displacement around 2.5×10-4Å/ Hz. The devices are fabricated on silicon using ...