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1.前言最近受到各界重视的超声波显微镜,不仅发展了以前的超声波测量技术,而且这种新测量装置具有过去意想不到的特点。作为技术方面的历史背景,超声波显微镜是建立在声纳、探伤仪、鱼群探测器或超声波诊断装置等超声波测量技术基础之上的,但这些测量系统使用的都是数 KHZ～数 MHZ 频带的超声波,与之不同,这个新装置因为使用100MHZ～数 GHZ 频带的超高频超声波,所以能作为显微镜来探索微观世界。对于数GHZ 频带的超声波,其波长等于或小于可见光波长,分辨率自然要比光学显微镜好。
1. Introduction Recently, ultrasound microscopy, which is valued by all walks of life, has not only developed the previous ultrasonic measurement technology, but also has unexpected features in the past. As a technical background, ultrasonic microscopy is based on ultrasonic measurement techniques such as sonar, flaw detectors, fish-finders or ultrasonic diagnostic devices, but these measurement systems use frequency bands from several kHz to several MHz In contrast, the new device, which uses ultra-high frequency ultrasound in the frequency band of 100 MHz to several GHz, can explore the microscopic world as a microscope. The number of GHZ band ultrasound, its wavelength equal to or less than the wavelength of visible light, the resolution is better than optical microscopy.