论文标题
电场诱导的聚电导率调制聚（乙烯基氟化物）
Electric-field-induced modulation of thermal conductivity in poly(vinylidene fluoride)
论文作者
论文摘要
Phonon工程专注于原子尺度上的热传输调制。与报道的方法不同，表明电场还可以通过模拟和测量来调节铁电聚合物聚合物（乙烯基氟化物）中的热传输。有趣的是，通过模拟，聚（乙烯基氟化物）阵列的热导率可以通过沿极化方向增强。半晶聚（乙烯基氟化物）膜也可以通过1.5倍增强，这是通过模拟和测量发现的。形态和声子特性分析表明，增强是由较高的链间晶格顺序，更强的链间相互作用，较高的声子组速度和抑制的声子散射引起的。这项研究提供了一种新的调制策略，具有快速响应，没有填充剂。
Phonon engineering focuses on heat transport modulation on atomic-scale. Different from reported methods, it is shown that electric field can also modulate heat transport in ferroelectric polymers, poly(vinylidene fluoride), by both simulation and measurement. Interestingly, thermal conductivities of poly(vinylidene fluoride) array can be enhanced by a factor of 3.25 along the polarization direction by simulation. The semi-crystalline poly(vinylidene fluoride) film can be also enhanced by a factor of 1.5 which is found by both simulation and measurement. The morphology and phonon property analysis reveal that the enhancement arises from the higher inter-chain lattice order, stronger inter-chain interaction, higher phonon group velocity and suppressed phonon scattering. This study offers a new modulation strategy with quick response and without fillers.
