手性旋转器的动态聚集

Dynamic aggregation of chiral spinners.

作者信息

Grzybowski Bartosz A, Whitesides George M

机构信息

Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, USA. bgrzybowskigmwgroup.harvard.edu

出版信息

Science. 2002 Apr 26;296(5568):718-21. doi: 10.1126/science.1068130.

DOI:10.1126/science.1068130

PMID:11976449

Abstract

An object spinning at the surface of a liquid creates a chiral vortex. If the spinning object is itself chiral, its shape modifies the characteristics of the vortex; interactions between that vortex and other vortices then depend on the chirality of the objects that produce them. This paper describes the aggregation of millimeter-sized, chiral magnetized plates floating at a liquid-air interface and rotating under the influence of a rotating external magnetic field. This external field confines all the plates at densities that cause the vortices they generate to interact strongly. For one set of plates investigated, plates of one chirality attract one another, and plates of the other chirality repel other plates of both chiralities.

摘要

在液体表面旋转的物体可产生手性涡旋。如果旋转物体本身是手性的，其形状会改变涡旋的特性；该涡旋与其他涡旋之间的相互作用则取决于产生它们的物体的手性。本文描述了毫米大小的手性磁化板在液 - 气界面漂浮，并在旋转外部磁场影响下旋转的聚集情况。这个外部磁场将所有板限制在一定密度，使得它们产生的涡旋能强烈相互作用。对于所研究的一组板，一种手性的板相互吸引，而另一种手性的板排斥两种手性的其他板。