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Imaging modes of atomic force microscopy for application in molecular and cell biology

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TLDR
The basic principles, advantages and limitations of the most common AFM bioimaging modes are reviewed, including the popular contact and dynamic modes, as well as recently developed modes such as multiparametric, molecular recognition, multifrequency and high-speed imaging.
Abstract
Atomic force microscopy (AFM) is a powerful, multifunctional imaging platform that allows biological samples, from single molecules to living cells, to be visualized and manipulated. Soon after the instrument was invented, it was recognized that in order to maximize the opportunities of AFM imaging in biology, various technological developments would be required to address certain limitations of the method. This has led to the creation of a range of new imaging modes, which continue to push the capabilities of the technique today. Here, we review the basic principles, advantages and limitations of the most common AFM bioimaging modes, including the popular contact and dynamic modes, as well as recently developed modes such as multiparametric, molecular recognition, multifrequency and high-speed imaging. For each of these modes, we discuss recent experiments that highlight their unique capabilities.

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Delft University of Technology
Imaging modes of atomic force microscopy for application in molecular and cell biology
Dufrêne, Yves F.; Ando, Toshio; Garcia, Ricardo; Alsteens, David; Martinez-Martin, David; Engel, Andreas;
Gerber, Christoph; Müller, Daniel J.
DOI
10.1038/nnano.2017.45
Publication date
2017
Document Version
Accepted author manuscript
Published in
Nature Nanotechnology
Citation (APA)
Dufrêne, Y. F., Ando, T., Garcia, R., Alsteens, D., Martinez-Martin, D., Engel, A., Gerber, C., & Müller, D. J.
(2017). Imaging modes of atomic force microscopy for application in molecular and cell biology.
Nature
Nanotechnology
,
12
(4), 295-307. https://doi.org/10.1038/nnano.2017.45
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Please check the document version above.
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Citations
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Biophysical nanocharacterization of liver sinusoidal endothelial cells through atomic force microscopy

TL;DR: This contribution highlights how AFM as a biophysical nanocharacterization tool enhanced understanding in the dynamic behaviour of liver sinusoidal endothelial fenestrae by enabling mapping of topography and nanomechanical properties at unprecedented resolution under live cell imaging conditions.
Journal ArticleDOI

3D depth profiling of the interaction between an AFM tip and fluid polymer solutions

TL;DR: 3D depth profiles reconstructed from FD and APD measurements provide detailed insight into the tip-sample interaction mechanism for a fluid polymer solution and comprise a versatile methodology for obtaining accurate dimensional measurements of fluid and gel-like objects on the nanometre scale.
Journal ArticleDOI

Immunoactivity of self-assembled antibodies investigated by atomic force microscopy

TL;DR: The antigen binding site in the IgG antibody hexamers was investigated, and the association rate constant of the self-assembled IgG molecules based on the AFM measurements was estimated, lower than that reported in a previous study probably because of the limited mobility of the antigen-binding fragments on the substrate.
Journal ArticleDOI

Cryopreserved Cells Regeneration Monitored by Atomic Force Microscopy and Correlated With State of Cytoskeleton and Nuclear Membrane

TL;DR: The first study of the stiffness of cryopreserved cells during post-thawing regeneration using AFM combined with confocal fluorescence microscopy is provided, demonstrating that the nonfrozen cell stiffness decreased proportionally to the cryoprotectant concentration in the medium.
References
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Journal ArticleDOI

Atomic force microscope

TL;DR: The atomic force microscope as mentioned in this paper is a combination of the principles of the scanning tunneling microscope and the stylus profilometer, which was proposed as a method to measure forces as small as 10-18 N. As one application for this concept, they introduce a new type of microscope capable of investigating surfaces of insulators on an atomic scale.
Journal ArticleDOI

Lipid Rafts As a Membrane-Organizing Principle

TL;DR: The evidence for how this principle combines the potential for sphingolipid-cholesterol self-assembly with protein specificity to selectively focus membrane bioactivity is reviewed.
Journal ArticleDOI

Force measurements with the atomic force microscope: Technique, interpretation and applications

TL;DR: The atomic force microscope (AFM) is not only used to image the topography of solid surfaces at high resolution but also to measure force-versus-distance curves as discussed by the authors, which provide valuable information on local material properties such as elasticity, hardness, Hamaker constant, adhesion and surface charge densities.
Journal ArticleDOI

Frequency modulation detection using high‐Q cantilevers for enhanced force microscope sensitivity

TL;DR: In this article, a frequency modulation (FM) technique has been demonstrated which enhances the sensitivity of attractive mode force microscopy by an order of magnitude or more, which is made possible by operating in a moderate vacuum (<10−3 Torr).

Frequency modulation detection using highdkantilevers for enhanced force microscope sensitivity

TL;DR: In this paper, a frequency modulation (FM) technique has been demonstrated which ennances the sensitivity of attractive mode force microscopy by an order of magnitude or more, which is made possible by operating in a moderate vacuum ( < 10 ’ Torr).
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The authors discuss recent examples that highlight the unique capabilities of these emerging new modalities.