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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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Nanoscale imaging reveals miRNA-mediated control of functional states of dendritic spines.

TL;DR: In situ visualizations of miRNAs provided unprecedented insights into the “inverse synaptic-tagging” roles of miR-134s that are selective to inactive/irrelevant synapses and potentially a molecular means for modifying synaptic connectivity via structural alteration.
Journal ArticleDOI

Nanoscale characterization of dynamic cellular viscoelasticity by atomic force microscopy with varying measurement parameters

TL;DR: This work utilized AFM to investigate cellular viscoelasticity (portrayed as relaxation time) with varying measurement parameters, including ramp rate and surface dwell time, on both cell lines and primary cells and shows that the obtained cellular relaxation times are remarkably dependent on the parameter surface Dwell time and ramp rate during measurements.
Journal ArticleDOI

Probing and pressing surfaces of hepatitis C virus-like particles.

TL;DR: The results presented in this study further the understanding of the nanostructure of hepatitis C VLPs, and should influence their uptake as viable vaccine candidates.
Journal ArticleDOI

In Situ Investigation of Interrelationships Between Morphology and Biomechanics of Endothelial and Glial Cells and their Nuclei.

TL;DR: Results reveal that ECs and their nuclei show high pliability and tend to undergo deformation only at compression sites, while SCs, in contrast, show greater ability to resist mechanical deformation.
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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