A simple versatile way of producing mini electret pieces with a handheld corona charging device is reported here. Its adaptability and suitability are demonstrated using a PVDF polymer. A quantitative assessment of the electret pieces is made by probing local charge distribution using electric force microscopy. The results are expected to be useful for polymer-based applications like dust filters that protect in the sub-micron range and for possible drug release devices.

中文翻译：

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探测驻极体的局部电荷分布——PVDF 聚合物的案例研究

这里报告了一种使用手持电晕充电设备生产微型驻极体片的简单通用方法。使用 PVDF 聚合物证明了其适应性和适用性。驻极体片的定量评估是通过使用电力显微镜探测局部电荷分布来进行的。预计该结果可用于基于聚合物的应用，例如在亚微米范围内提供保护的灰尘过滤器和可能的药物释放装置。