Pulsed electroacoustic (PEA) space charge measurement of low‐density polyethylene using a spin‐coated poly(vinylidene fluoride‐trifluoroethylene) thin film is demonstrated. The space charge profile of a low‐density polyethylene film with a thickness of 150 μm is measured by PEA method. Compared with conventional 9 and 30‐μm piezoelectric films, the space charge profile obtained by the 3‐μm spin‐coated film shows better spatial resolution. Furthermore, acoustic attenuation of a PEA signal is also analytically studied using the Kelvin‐Voigt model for viscoelastic materials.

中文翻译：

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使用旋涂P（VDF-TrFE）膜进行低密度聚乙烯的PEA测量以及基于粘弹性的声传播分析

演示了使用旋涂的聚偏二氟乙烯-三氟乙烯薄膜对低密度聚乙烯进行脉冲电声（PEA）空间电荷测量。通过PEA方法测量厚度为150μm的低密度聚乙烯薄膜的空间电荷分布。与传统的9和30μm压电膜相比，由3μm旋涂膜获得的空间电荷分布图显示出更好的空间分辨率。此外，还使用Kelvin-Voigt模型对粘弹性材料进行了PEA信号的声衰减分析研究。