Transmission Peak and Its Suppression of Ultrasound Travelling through Layered Structures Comprised of Cu and Ag in a Liquid

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概要

• 論文の詳細を見る

• We observed the transmission peak and its suppression of ultrasound travelling through layered structures in a liquid at the frequency range of stop band. The layered structures are comprised of bilayers of Cu and Ag. Each layer has the thickness of 0.50 mm. When the number of bilayers is small, a peak of transmission rate occurs at 2.08 MHz. However, this peak is suppressed when the total number of bilayers increases. This suppression of the peak originates in the stop band determined by the unit bilayer (Cu/Ag). Making use of the effective reflection coefficient, we obtain the transmission rate precisely including the suppression of the peak of transmission rate at 2.08 MHz. The suppression is a characteristic feature of layered structures comprised of only bilayers. We elucidate this feature by the deviation of the effective reflection coefficient from the usual reflection coefficient at the interface between the layered structure and the liquid. When the layered structure has an extra layer, the suppression does not occur. This situation is similar to the case of homogeneous materials such as the Cu plate or the Ag plate.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2003-05-15

著者

• Kato Hatsuyoshi

  Tomakomai National College Of Technology

• KOJIMA Yohichiro

  Tomakomi National College of Technology

• Kato Hatsuyoshi

  Tomakomi National College of Technology, 443 Nishikioka, Tomakomai 059-1275, Japan

関連論文

• Resonant Transmission of Two Acoustic Phonon Modes in a Superlattice with (111) Interfaces
• Transmission of Ultrasound from Layered Structures into a Liquid
• Classification of Oral/Nasal Simulated Snores Based on the Acoustic Properties
• Transmission Peak and Its Suppression of Ultrasound Travelling through Layered Structures Comprised of Cu and Ag in a Liquid

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