Abstract
Dynamic processes and structural changes of biological molecules are essential to life. While conventional atomic force microscopy (AFM) is able to visualize molecules and supramolecular assemblies at sub-nanometer resolution, it cannot capture dynamics because of its low imaging rate. The introduction of high-speed atomic force microscopy (HS-AFM) solved this problem by providing a large increase in imaging velocity. Using HS-AFM, one is able to visualize dynamic molecular events with high spatiotemporal resolution under near-to physiological conditions. This approach opened new windows as finally dynamics of biomolecules at sub-nanometer resolution could be studied. Here we describe the working principles and an operation protocol for HS-AFM imaging and characterization of biological samples in liquid.
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