Atomic force microscopy force mapping in the study of supported lipid bilayers

JK Li, RMA Sullan, S Zou - Langmuir, 2011 - ACS Publications
Langmuir, 2011ACS Publications
Investigating the structural and mechanical properties of lipid bilayer membrane systems is
vital in elucidating their biological function. One route to directly correlate the morphology of
phase-segregated membranes with their indentation and rupture mechanics is the collection
of atomic force microscopy (AFM) force maps. These force maps, while containing rich
mechanical information, require lengthy processing time due to the large number of force
curves needed to attain a high spatial resolution. A force curve analysis toolset was created …
Investigating the structural and mechanical properties of lipid bilayer membrane systems is vital in elucidating their biological function. One route to directly correlate the morphology of phase-segregated membranes with their indentation and rupture mechanics is the collection of atomic force microscopy (AFM) force maps. These force maps, while containing rich mechanical information, require lengthy processing time due to the large number of force curves needed to attain a high spatial resolution. A force curve analysis toolset was created to perform data extraction, calculation and reporting specifically in studying lipid membrane morphology and mechanical stability. The procedure was automated to allow for high-throughput processing of force maps with greatly reduced processing time. The resulting program was successfully used in systematically analyzing a number of supported lipid membrane systems in the investigation of their structure and nanomechanics.
ACS Publications
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