[15p-K210-1~12] 1.6 Ultrasonics

3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[15p-K210-8] Acoustic Impedance Imaging of Granite and Quartz by using Ultrasonic Microscopy

〇Rikuta Uehara¹, Yuki Kawaguchi², Kazuto Kobayashi², Munehiro Ebato³, Akihiro Matsutani¹, Marie Tabaru¹ (1.Science Tokyo, 2.HONDA Electronics, 3.NARO)

Keywords:

Ultrasonic microscopy,Acoustic impedance,Mineral

A new evaluation method is desired to replace soil flakes in soil observations. We focused on ultrasonic microscopy, which visualizes ultrasonic properties of samples with a high resolution on the order of 10 μm. In this report, we acquired the first ultrasonic impedance images of granite, a mineral that constitutes soil, using an 80 MHz focused ultrasonic 6 images were acquired and stitched together in a 4.8 x 4.8 mm² area. The acoustic impedance distribution of feldspar, mica, and quartz allowed us to distinguish between them.