Imaging Biological Samples with Atomic Force Microscopy

Author:

de Pablo Pedro J.,Carrión-Vázquez Mariano

Abstract

Atomic force microscopy (AFM) is an invaluable tool both for obtaining high-resolution topographical images and for determining the values of mechanical and structural properties of specimens adsorbed onto a surface. AFM is useful in an array of fields and applications, from materials science to biology. It is an extremely versatile technique that can be applied to almost any surface-mounted sample and can be operated in ambient air, ultrahigh vacuum, and, most importantly for biology, liquids. AFM can be used to explore samples ranging in size from atoms to molecules, molecular aggregates, and cells. Individual biomolecules can be viewed and manipulated at the nanoscale, providing fundamental biological information. In particular, the study of the mechanical properties of biomolecular aggregates at the nanoscale constitutes an important source of data to elaborate mechanochemical structure/function models of single-particle biomachines, expanding and complementing the information obtained from bulk experiments.

Publisher

Cold Spring Harbor Laboratory

Subject

General Biochemistry, Genetics and Molecular Biology

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