High-Efficiency Unipolar Charger for Sub-10 nm Aerosol Particles Using Surface-Discharge Microplasma with a Voltage of Sinc Function
High-Efficiency Unipolar Charger for Sub-10 nm Aerosol Particles Using Surface-Discharge Microplasma with a Voltage of Sinc Function
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DOI：
10.1080/02786826.2012.725492
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发表时间：
2013-01
影响因子：
5.2
通讯作者：
Eric Manirakiza;T. Seto;Saho Osone;K. Fukumori;Y. Otani
中科院分区：
文献类型：
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作者：
Eric Manirakiza;T. Seto;Saho Osone;K. Fukumori;Y. Otani
我们的小组通过增加充电时间并最大限度地减少带电粒子的静电沉积损失，使用表面放电微等离子体开发了一种适用于 10 nm 以下粒子的高性能单极充电器。对各种放电电压波形的放电电压的研究表明，时间 t 的 sinc 函数，即具有偏置电压的 (sin ωt)/ωt，通过产生高浓度的离子并抑制带电粒子的静电沉积，实现了高外在充电效率（带电粒子的高产率）。在最佳放电电压和气溶胶流量为2.5 L/min的试运行中，充电器对10 nm颗粒物的内在和外在充电效率分别为79.3和61.4%，对5 nm颗粒物的内在和外在充电效率分别为48.0和34.6%。版权所有 2013 美国气溶胶研究协会
Our group developed a high-performance unipolar charger for sub-10-nm particles using a surface-discharge microplasma by increasing the charging time and minimizing the electrostatic deposition loss of the charged particles. An investigation of the discharge voltages of various discharge voltage waveforms demonstrated that a sinc function of time, t, that is, (sin ωt)/ωt with a bias voltage, achieved a high extrinsic charging efficiency (a high yield of charged particles) by generating a high concentration of ions and suppressing the electrostatic deposition of the charged particles. In trial operation at the optimal discharge voltage and an aerosol flow rate of 2.5 L/min, the charger attained intrinsic and extrinsic charging efficiencies of 79.3 and 61.4% for 10-nm particles and intrinsic and extrinsic charging efficiencies of 48.0 and 34.6% for 5-nm particles, respectively. Copyright 2013 American Association for Aerosol Research