Measurement of the ultrasound attenuation and dispersion in 3D-printed photopolymer materials from 1 to 3.5 MHz.
Measurement of the ultrasound attenuation and dispersion in 3D-printed photopolymer materials from 1 to 3.5 MHz.
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DOI：
10.1121/10.0006668
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发表时间：
2021-10
期刊：
影响因子：
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通讯作者：
Marina Bakaric;P. Miloro;A. Javaherian;B. Cox;B. Treeby;Michael D. Brown
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作者：
Marina Bakaric;P. Miloro;A. Javaherian;B. Cox;B. Treeby;Michael D. Brown
在过去的十年中，利用3D打印的生物医学超声应用范围迅速扩大。特别是对于波前整形，3D打印已经实现了各种新的，低成本的方法来控制声场。这些方法依赖于材料的体声波特性的准确知识;然而，迄今为止，对于许多常用的材料，缺乏这些参数的可靠知识。在这项工作中，八种3D打印光聚合物材料的声学特性在1至3.5 MHz的频率范围内进行了表征。测量的属性是频率依赖的相速度和衰减，群速度，信号速度和质量密度。使用两种单独的技术[PolyJet和立体光刻（SLA）]制造材料，包括Aluminus 30、FLXA 9960、FLXA 9995、Formlabs Clear、RGDA 8625、RGDA 8630、VeroClear和VeroWhite。所有八种材料的测量密度值范围为1120-1180 kg · m-3，而声速值在2020 - 2630 m · s-1之间，衰减值通常在3-9 dB · MHz-1· cm-1范围内。
Over the past decade, the range of applications in biomedical ultrasound exploiting 3D printing has rapidly expanded. For wavefront shaping specifically, 3D printing has enabled a diverse range of new, low-cost approaches for controlling acoustic fields. These methods rely on accurate knowledge of the bulk acoustic properties of the materials; however, to date, robust knowledge of these parameters is lacking for many materials that are commonly used. In this work, the acoustic properties of eight 3D-printed photopolymer materials were characterised over a frequency range from 1 to 3.5 MHz. The properties measured were the frequency-dependent phase velocity and attenuation, group velocity, signal velocity, and mass density. The materials were fabricated using two separate techniques [PolyJet and stereolithograph (SLA)], and included Agilus30, FLXA9960, FLXA9995, Formlabs Clear, RGDA8625, RGDA8630, VeroClear, and VeroWhite. The range of measured density values across all eight materials was 1120-1180 kg · m-3, while the sound speed values were between 2020 to 2630 m · s-1, and attenuation values typically in the range 3-9 dB · MHz-1· cm-1.