Controlling Molecular Diffusion in Self-Spreading Lipid Bilayer Using Periodic Array of Ultra-Small Metallic Architecture on Solid Surface

Diffusion of target molecules incorporated in the self-spreading lipid bilayer was controlled by the introduction of periodic array of metallic architecture on solid surface. Retardation of the progress of target molecules became significant when the size of gap between small metal architectures was...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2005-12, Vol.127 (48), p.16786-16787
Main Authors: Nabika, Hideki, Sasaki, Atsushi, Takimoto, Baku, Sawai, Yoshitaka, He, Shengtai, Murakoshi, Kei
Format: Article
Language:English
Subjects:
Chemical Phenomena
Chemistry
Condensed matter: structure, mechanical and thermal properties
Diffusion
Exact sciences and technology
Lipid Bilayers - chemistry
Microscopy, Fluorescence
Nanotubes - chemistry
Phosphatidylcholines - chemistry
Physics
Silicon - chemistry
Solid-fluid interfaces
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Wetting
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Summary:Diffusion of target molecules incorporated in the self-spreading lipid bilayer was controlled by the introduction of periodic array of metallic architecture on solid surface. Retardation of the progress of target molecules became significant when the size of gap between small metal architectures was less than a few hundred nanometers. The self-spreading dynamics of the lipid bilayer depending on the size of the small gap were analyzed semiquantitatively. Estimated change in the driving force of the spreading layer suggests that highly localized compression of the spreading layer causes selective segregation of molecules.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja0559597