Singh P, Hossain M, Gurupatham S K, Shah K, Amah E, Ju D, Janjua M, Nudurupati S, Fischer I
Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, 200 Central Avenue, Newark, NJ 07102.
Sci Rep. 2014 Dec 16;4:7427. doi: 10.1038/srep07427.
We present a technique that uses an externally applied electric field to self-assemble monolayers of mixtures of particles into molecular-like hierarchical arrangements on fluid-liquid interfaces. The arrangements consist of composite particles (analogous to molecules) which are arranged in a pattern. The structure of a composite particle depends on factors such as the relative sizes of the particles and their polarizabilities, and the electric field intensity. If the particles sizes differ by a factor of two or more, the composite particle has a larger particle at its core and several smaller particles form a ring around it. The number of particles in the ring and the spacing between the composite particles depend on their polarizabilities and the electric field intensity. Approximately same sized particles form chains (analogous to polymeric molecules) in which positively and negatively polarized particles alternate.
我们展示了一种技术，该技术利用外部施加的电场，使颗粒混合物的单分子层在液 - 液界面上自组装成类分子的分层排列。这些排列由按图案排列的复合颗粒（类似于分子）组成。复合颗粒的结构取决于颗粒的相对大小、极化率以及电场强度等因素。如果颗粒大小相差两倍或更多倍，复合颗粒的核心是一个较大的颗粒，周围有几个较小的颗粒形成一个环。环中颗粒的数量以及复合颗粒之间的间距取决于它们的极化率和电场强度。大小近似相同的颗粒形成链（类似于聚合物分子），其中带正电和带负电的极化颗粒交替排列。
