Comparison of the Nanosecond Pulse and Direct Current Charging to Develop the Strongly Charged Electret
Comparison of the Nanosecond Pulse and Direct Current Charging to Develop the Strongly Charged Electret
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纳秒脉冲与直流充电开发强电荷驻极体的比较
DOI：
10.1002/9781118996652.ch1
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
K.
中科院分区：
文献类型：
--
作者：
Awaya;K.; Mitsuhashi;M.; Sakashita;T.; Byungjin;H.; Nakayama;T.; Jiang;W.; Tokuchi;A.; Suzuki;T.; Suematsu;H.; Niihara;K.
近年来，利用驻极体的微发电因其在低频范围内的大功率输出而备受关注。由于理论功率输出与驻极体表面电荷密度的平方成正比，因此需要开发高性能驻极体。传统上，驻极体主要通过使用直流(DC)源产生的电晕放电来制造。然而，由于驻极体的表面电荷密度增加，当对材料施加高电压时，通常会发生介电击穿。在这里，我们重点关注纳秒脉冲（70 ns 脉冲宽度），它能够向材料施加比使用直流电更高的电压。对由直流和纳秒脉冲制造的各种聚四氟乙烯 (PTFE) 驻极体进行了一系列表面电位和热刺激放电电流 (TSDC) 谱的测量。研究发现，使用纳秒脉冲可以提高表面电荷密度和电荷的耐热性。使用0.59 mC/m 2 的纳秒脉冲的表面电荷密度比使用DC的表面电荷密度大
Recently, micro power generation using electrets has attracted much attention due to its large power output at a low frequency range. Since the theoretical power output is proportional to the square of the surface charge density of the electret, the development of a high-performance electret is required. Conventionally, electrets have been mainly manufactured by corona discharge generated using a direct current (DC) source. However, dielectric breakdown usually occurs when high voltage is applied to a material due to the increased surface charge density of the electret. Here, we focus on the nanosecond pulse (70 ns pulse width) that has ability to apply higher voltages to materials than when DC is used. A series of measurements of surface potential and thermally stimulated discharge current (TSDC) spectra is made for various polytetrafluoroethylene (PTFE) electrets, which were manufactured by DC and nanosecond pulses. It is found that the surface charge density and thermal resistibility of electric charges are improved by using nanosecond pulses. A surface charge density using a nanosecond pulse of 0.59 mC/m 2 is larger than that of using DC by