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Unravel buried soft interfaces: From lipid bilayers to responsive polymer brushes

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Many biologically and industrially relevant interfaces are decorated with polymers and surfactants. Understanding the structure of such soft interfaces is thus critically important. Using synchrotron X-ray reflectivity (XRR), we have studied self-assembled surfactant/lipid layers at the mica-water interface using a “bending mica” method, and observed layer structural characteristics which differ from those widely reported using AFM imaging. We have also used the XRR technique to study the collapse of thermoresponsive polymer brushes, critically examining the validity of two competing structural models for such a brush collapse process.

This talk is part of the BPI Seminar Series series.

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