Controlling Orientation Direction of Discotic Columns Assembled in Microtrenches

Cheng-Yan Chiang, Ian Underwood, Wenjun Zheng

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Microtrenches have been produced on the surface of a glass substrate using conven- tional photolithography technique. When subsequently deposited on the micro-patterned substrate, discotic triphenylene molecules are found to assemble into columns with ori- entational ordering. Homogeneous alignment of the discotic columns has been produced on the substrate with parallel microtrenches. The orientational direction of the discotic columns can be controlled using a set of controlling microtrenches. By properly mod- ifying the topological structures of the controlling microtrenches we are able to tune the discotic columns assembled in the primary trenches to align either parellel or perpendicular to the walls of the trenches.
Original languageEnglish
Pages (from-to)185
Number of pages192
JournalMolecular Crystals and Liquid Crystals
Issue number1
Publication statusPublished - 11 Jan 2012


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