Ultrasonic Absorption Microscope
Ultrasonic Absorption Microscope
复制标题
超声波吸收显微镜
DOI：
10.1121/1.1907767
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发表时间：
1959
影响因子：
2.4
通讯作者：
W. Fry
中科院分区：
文献类型：
--
作者：
F. Dunn;W. Fry
本文介绍了超声波显微组织检测仪的研制进展。该设备的操作原理（由术语“超声显微镜”指定）如下：将样品嵌入在与其声阻抗紧密匹配的液体中，并用高频声的短脉冲照射。一些超声波能量被吸收在试样中，其余的离开它，并激发一个小的热电探头放置在紧邻被调查的区域。当位于声源和探头之间的样品沿垂直于声音传播方向的方向移动时，探头将检测到变化的声学信号。这是一个事实的结果，即在紧邻探头的部分中被试样吸收的声能的量由试样的该部分的结构决定。用这种“显微镜”获得的初步实验结果...
This paper constitutes a progress report on the development of an ultrasonic instrument for detecting microstructure. The principle of operation of the device (designated by the term “ultrasonic microscope”) is as follows: The specimen is imbedded in a liquid, which closely matches it in acoustic impedance, and is irradiated with short pulses of high‐frequency sound. Some of the ultrasonic energy is absorbed in the specimen and the remainder leaves it and excites a small thermoelectric probe placed immediately adjacent to the region being investigated. As the specimen, which is between the sound source and the probe, is moved in a direction normal to the direction of sound propagation, a varying acoustic signal will be detected by the probe. This is a consequence of the fact that the amount of acoustic energy absorbed by the specimen in the portion immediately adjacent to the probe is determined by the structure of that part of the specimen.Preliminary experimental results obtained with such a “microscope...