title: Bending and radial deformation of lipid tubules on self-assembled thiol monolayers.
abstract: Lipid tubules represent a hollow, cylindrical supramolecular structure formed by rolled-up lipid bilayers. We find that the lipid tubules of 1,2-bis(tricosa-10,12-diynoyl)-sn-glycero-3-phosphocholine can be bent into a loopike shape by the shrinking contact line of droplets on self-assembled monolayers (SAMs) of 1-dodecanethiol. The persistence length of individual lipid tubules is estimated to be approximately 41 microm. The radial deformation of the lipid tubules on SAMs is studied under applied load using atomic force microscope. The stiffness of the tubules in the radial direction is found to increase when the number of the lipid bilayers in the tubule wall increases.
authors.affiliation: Advanced Materials Processing and Analysis Center and Department of Mechanical, Materials, and Aerospace Engineering, University of Central Florida, Orlando, Florida 32816, USA.
authors.forename: Yue
authors.initials: Y
authors.lastname: Zhao
authors.forename: Nidhi
authors.initials: N
authors.lastname: Mahajan
authors.forename: Jiyu
authors.initials: J
authors.lastname: Fang
mesh_terms: D001696:Biomechanical Phenomena; D008051:Lipid Bilayers; D008055:Lipids / Q000737:chemistry; D008567:Membranes, Artificial; D013438:Sulfhydryl Compounds / Q000737:chemistry*
chemical_list: D008051:Lipid Bilayers; D008055:Lipids; D008567:Membranes, Artificial; D013438:Sulfhydryl Compounds