Many air filtration technologies have been used to solve the environmental issues of fine and ultrafine dust particles, which have been raised over the past decades. Many other filtration technologies have been developed, while high-efficiency particulate arrestance (HEPA) is widely used recently due to its high efficiency. However, the HEPA filter has some limitations, such as high pressure drop, nonrecyclability, and most importantly, short lifetime. Regarding other types of air filters, electrostatic filters require a two-stage process (i.e., charging and polarization) of particles before filtration, whereas electroadhesion air filters could capture both polar and nonpolar particles without a two-stage process. The dust-holding capacity allows the quantitative analysis of the areal adhesion amount to be conducted. In this study, three different kinds of particles of fine dust, microcrystalline cellulose, and Teflon were tested. A model equation of the areal adhesion amount was also developed as a function of boundary edge length, voltage, and the dielectric constant of each material and allowed the areal adhesion amount of fine dust particles to be maximized, which is well above those of the HEPA filter and electrostatic filter. The optical images clearly showed that the dielectric polarization of polar particles was stronger than that of nonpolar particles.

中文翻译：

---

使用界面和定向极化的电粘附装置捕获极性和非极性粒子

许多空气过滤技术已被用于解决过去几十年提出的细小和超细粉尘颗粒的环境问题。许多其他过滤技术已经被开发出来，而高效微粒捕集器（HEPA）由于其高效率而最近被广泛使用。但是，HEPA 过滤器有一些局限性，例如压降大、不可回收，最重要的是使用寿命短。对于其他类型的空气过滤器，静电过滤器在过滤前需要对颗粒进行两阶段过程（即充电和极化），而电粘附空气过滤器无需两阶段过程即可捕获极性和非极性颗粒。容尘量允许对面积附着量进行定量分析。在这项研究中，测试了三种不同的细尘、微晶纤维素和特氟龙颗粒。还开发了面积附着量的模型方程，作为边界边缘长度、电压和每种材料的介电常数的函数，并允许细尘颗粒的面积附着量最大化，远高于 HEPA 的面积附着量过滤器和静电过滤器。光学图像清楚地表明极性粒子的介电极化强于非极性粒子的介电极化。这远高于 HEPA 过滤器和静电过滤器。光学图像清楚地表明极性粒子的介电极化强于非极性粒子的介电极化。这远高于 HEPA 过滤器和静电过滤器。光学图像清楚地表明极性粒子的介电极化强于非极性粒子的介电极化。