Two-Dimensional Measurement of Airborne Ultrasound Field Using Thermal Images
Two-Dimensional Measurement of Airborne Ultrasound Field Using Thermal Images
复制标题
DOI：
10.1103/physrevapplied.18.044047
复制
发表时间：
2022-10
影响因子：
4.6
通讯作者：
Ryoya Onishi;Takaaki Kamigaki;Shun Suzuki;Tao Morisaki;M. Fujiwara;Yasutoshi Makino;H. Shinoda
中科院分区：
文献类型：
--
作者：
Ryoya Onishi;Takaaki Kamigaki;Shun Suzuki;Tao Morisaki;M. Fujiwara;Yasutoshi Makino;H. Shinoda
近年来，机载超声技术的应用受到了广泛的关注，然而，在空气中的高速超声场测量还没有得到很好的研究。这项研究表明，热响应高强度空中超声可以用来可视化空中超声场。热图像在一个网格屏幕上，使二维超声场的快速定量测量。另外，基于反射超声波的表面上的温度分布，可以以比波长精细得多的分辨率来确定超声波焦点位置。结果表明，基于超声温度转换的热成像观测，这是传统的耗时或难以执行，可以用来可视化声场在0.5秒内。这些发现将推进使用强机载超声的工程应用，如半空中触觉和声悬浮，并为检测表面特性和成分提供科学和技术应用，包括细胞和易碎材料。
Recently, the applications of airborne ultrasound technology have garnered considerable attention; however, high-speed ultrasound field measurements in air have not been well researched. This study demonstrates that thermal responses to high-intensity airborne ultrasound can be used to visualize airborne ultrasound fields. Thermal images on a mesh screen enable the rapid quantitative measurement of two-dimensional ultrasound fields. Additionally, based on the temperature distribution on a surface that reflects ultrasound waves, it is possible to determine the ultrasound focus position with a resolution much finer than the wavelength. The results demonstrate that thermography observations based on ultrasound-temperature conversion, which are conventionally time-consuming or difficult to perform, can be used to visualize acoustic fields within 0.5 s. These findings will advance engineering applications that use strong airborne ultrasound, such as midair haptics and acoustic levitation, and provide scientific and technical applications for detecting surface properties and composition, including those of cells and fragile materials.