Measurements of acoustic properties of aqueous dextran solutions in the VHF/UHF range

被引：27

作者：

Akashi, N ^{[1
]}

Kushibiki, JI

Dunn, F

机构：

[1] Ichinoseki Natl Coll Technol, Dept Elect Engn, Ichinoseki 0218511, Japan

[2] Tohoku Univ, Grad Sch Engn, Dept Elect Engn, Sendai, Miyagi 9808579, Japan

[3] Univ Illinois, Bioacoust Res Lab, Urbana, IL 61801 USA

来源：

ULTRASONICS | 2000年 / 38卷 / 09期

关键词：

aqueous dextran solution; acoustic property; VHF/UHF range; bioultrasonic spectroscopy system; frequency dependence;

D O I：

10.1016/S0041-624X(00)00015-9

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The acoustic properties of aqueous solutions of dextran are characterized in the frequency range of 70-400 MHz by the bio-ultrasonic spectroscopy system using an ultrasonic transmission comparison method. The attenuation, velocity, impedance, and density of aqueous dextran solutions, for six molecular weights in the range of 10,400-2,000,000 Da in the concentration range 5-20% by weight, are reported. All four parameters increase with increasing concentration. As the molecular weight increases, the attenuation coefficient increases and the velocity decreases. The precise frequency and molecular weight dependences of the acoustic properties of the solutions are readily determined by the system. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：915 / 919

页数：5

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