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Dynamic evolution of adhesion force between protein films studied by atomic force microscope

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Chinese Science Bulletin

Abstract

The approaching of two hydrophobic surfaces in water will lead to the combination of air bubbles adsorbed on the surfaces, thus additional long-range attraction is induced due to the bridging capillary force. Theoretical analysis shows that the process is a first-order phase transition, while no direct experiment supports the predication. The interaction between protein modified tip of atomic force microscope and protein film on mica was studied. The results demonstrate that the adhesion force between them increases to a stable value during the calibration process and the evolution clearly indicates the character of first-order transition.

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Authors and Affiliations

  1. Institute of Chemistry, Chinese Academy of Sciences, 100080, Beijing, China

    Ming Su, Chen Wang & Chunli Bai

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  1. Ming Su
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  2. Chen Wang
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  3. Chunli Bai
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Su, M., Wang, C. & Bai, C. Dynamic evolution of adhesion force between protein films studied by atomic force microscope. Chin. Sci. Bull. 43, 1882–1886 (1998). https://doi.org/10.1007/BF02883464

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  • DOI: https://doi.org/10.1007/BF02883464

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