P(VDF-TrFE)スピンコート膜を用いた低密度ポリエチレンの空間電荷測定と粘弾性理論に基づいた圧力波伝搬解析

抄録

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-µm 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.