Title

Positioning and alignment of lipid tubules on patterned Au substrates

Authors

Authors

Y. Zhao;J. Y. Fang

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Langmuir

Keywords

NANOTUBES; NETWORKS; DNA; MICROSTRUCTURES; FABRICATION; ASSEMBLIES; SURFACTANT; NANOFIBERS; RELEASE; RIBBONS; Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, ; Multidisciplinary

Abstract

This paper presents a method for positioning and aligning self-assembled tubules of 1,2-bis(tricosa-10,12-diynoyl)-sn-glycero-3-phosphochloline (DC8,9PC) by withdrawing a patterned Au substrate from tubule solution. The patterned Au substrates with alternating bare Au stripes and thiol monolayer stripes are formed by microcontact printing. We find that the lipid tubules selectively adsorb on the bare All stripes but show no orientation order. By withdrawing the patterned Au substrates at the direction along the stripes from tubule solution, the lipid tubules are found to be aligned along the direction of the Au stripes. The angular distribution and the density of the aligned lipid tubules depend on the withdrawal rates and the adsorption time, respectively. We conclude that forces causing tubule alignment that originate in the surface tension associated with the moving meniscus dominate alignment forces exerted by the patterned Au substrates.

Journal Title

Langmuir

Volume

22

Issue/Number

4

Publication Date

1-1-2006

Document Type

Article

Language

English

First Page

1891

Last Page

1895

WOS Identifier

WOS:000235354800079

ISSN

0743-7463

Share

COinS