论文标题
铁电P（VDF-TRFE）纳米纤维通过分子键调制的可调导热率
Tunable thermal conductivity of ferroelectric P(VDF-TrFE) nanofibers via molecular bond modulation
论文作者
论文摘要
铁电共聚物P（VDF-TRFE）中的偶极子可以由电场驱动，通过偏振分子链引入声子传输调制。发现单个75/25 P（VDF-TRFE）纳米纤维中的热导率随着电场相关的语音重归其化而增加，这是由于振动过程被极化过程激发的振动分配而导致的。在极化电场下，拉曼表征在75/25 P（VDF-TRFE）纳米纤维中直接变化的键能和键长的直接变化可以证明这一点。实验结果提供了进一步的直观证据，即铁电聚合物的大小可以直接影响依赖大小依赖的热传输测量的铁电性。
The dipoles in ferroelectric copolymer P(VDF-TrFE) can be driven by electric field, introducing phonon transport modulations through polarizing molecular chains. The thermal conductivity in single 75/25 P(VDF-TrFE) nanofibers is found to increase with electric field related phonon renormalization, resulted from change in vibrational assignment excited by polarization process. This is evidenced by a direct change of bond energy and bond length in 75/25 P(VDF-TrFE) nanofibers from Raman characterization under polarization electric field. The experimental results provide further intuitive evidences that the size of ferroelectric polymers could directly affect the ferroelectricity from the size-dependent thermal transport measurement.
