Abstract Commonly used liquids have a powerful effect on producing electrostatic charges, from laboratory routines to industry processing and everyday activities. In many situations, electrostatic charges are not desirable, mostly in the presence of flammable liquids or for electronic devices that are susceptible to electrostatic discharge (ESD). Recently, liquid water was successfully allocated in the triboelectric series and it was shown that it can acquire great amounts of charge when flowing through different materials or even by a simple micropipetting. Here, we have developed a simple but robust protocol to suppress and control electrostatic charges during the pipetting of water, common alcohols and solutions. Using glass containers instead of plastic ones, charge is highly suppressed and its sign and magnitude can be controlled with external electrical fields. Finally, drops arising from a micropipette ended in a grounded metallic needle have roughly zero net charge, regardless the presence of external electrical fields. This protocol faces a very challenging problem of electricity formation while handling common liquids and it could be helpful to avoid electrostatic charge in many systems.

中文翻译：

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抑制和控制微量移液中的静电荷

摘要 常用液体对产生静电荷具有强大的影响，从实验室常规到工业加工和日常活动。在许多情况下，静电荷是不可取的，主要是在存在易燃液体或易受静电放电 (ESD) 影响的电子设备中。最近，液态水被成功地分配到摩擦电系列中，并表明它在流过不同材料时甚至通过简单的微量移液都可以获得大量电荷。在这里，我们开发了一个简单但强大的协议，用于在水、普通酒精和溶液的移液过程中抑制和控制静电荷。用玻璃容器代替塑料容器，电荷受到高度抑制，其符号和大小可以通过外部电场控制。最后，无论外部电场是否存在，从以接地金属针结束的微量移液管产生的液滴的净电荷大致为零。该协议在处理常见液体时面临着一个非常具有挑战性的电形成问题，它可能有助于避免许多系统中的静电荷。