Overcoming Challenges and Limitations Regarding the Atomic Force Microscopy Imaging and Mechanical Characterization of Nanofibers

Atomic force microscopy (AFM) is a powerful tool that enables imaging and nanomechanical properties characterization of biological materials. Nanofibers are the structural units of many biological systems and their role in the development of advanced biomaterials is crucial. AFM methods have proven...

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المؤلفون الرئيسيون: Stylianos Vasileios Kontomaris, Andreas Stylianou, Georgios Chliveros, Anna Malamou
التنسيق: مقال
اللغة:English
منشور في: MDPI AG 2023-10-01
سلاسل:Fibers
الموضوعات:
الوصول للمادة أونلاين:https://www.mdpi.com/2079-6439/11/10/83
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author Stylianos Vasileios Kontomaris
Andreas Stylianou
Georgios Chliveros
Anna Malamou
author_facet Stylianos Vasileios Kontomaris
Andreas Stylianou
Georgios Chliveros
Anna Malamou
author_sort Stylianos Vasileios Kontomaris
collection DOAJ
description Atomic force microscopy (AFM) is a powerful tool that enables imaging and nanomechanical properties characterization of biological materials. Nanofibers are the structural units of many biological systems and their role in the development of advanced biomaterials is crucial. AFM methods have proven to be effective towards the characterization of fibers with respect to biological and bioengineering applications at the nanoscale. However, both the topographical and mechanical properties’ nanocharacterizations of single fibers using AFM are challenging procedures. In particular, regarding imaging procedures, significant artifacts may arise from tip convolution effects. The geometrical characteristics of the AFM tip and the nanofibers, and the fact that they have similar magnitudes, may lead to significant errors regarding the topographical imaging. In addition, the determination of the mechanical properties of nanofibers is also challenging due to their small dimensions and heterogeneity (i.e., the elastic half-space assumption is not valid in most cases). This review elucidates the origins of errors in characterizing individual nanofibers, while also providing strategies to address limitations in experimental procedures and data processing.
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spelling doaj.art-011cb2ed6ee44b90a9c1f47ac68d98002023-11-19T16:26:47ZengMDPI AGFibers2079-64392023-10-0111108310.3390/fib11100083Overcoming Challenges and Limitations Regarding the Atomic Force Microscopy Imaging and Mechanical Characterization of NanofibersStylianos Vasileios Kontomaris0Andreas Stylianou1Georgios Chliveros2Anna Malamou3Faculty of Engineering and Architecture, Metropolitan College, 15125 Athens, GreeceSchool of Sciences, European University Cyprus, Nicosia 2404, CyprusFaculty of Engineering and Architecture, Metropolitan College, 15125 Athens, GreeceIndependent Power Transmission Operator S.A. (IPTO), 10443 Athens, GreeceAtomic force microscopy (AFM) is a powerful tool that enables imaging and nanomechanical properties characterization of biological materials. Nanofibers are the structural units of many biological systems and their role in the development of advanced biomaterials is crucial. AFM methods have proven to be effective towards the characterization of fibers with respect to biological and bioengineering applications at the nanoscale. However, both the topographical and mechanical properties’ nanocharacterizations of single fibers using AFM are challenging procedures. In particular, regarding imaging procedures, significant artifacts may arise from tip convolution effects. The geometrical characteristics of the AFM tip and the nanofibers, and the fact that they have similar magnitudes, may lead to significant errors regarding the topographical imaging. In addition, the determination of the mechanical properties of nanofibers is also challenging due to their small dimensions and heterogeneity (i.e., the elastic half-space assumption is not valid in most cases). This review elucidates the origins of errors in characterizing individual nanofibers, while also providing strategies to address limitations in experimental procedures and data processing.https://www.mdpi.com/2079-6439/11/10/83AFM artifactstip convolution effectsmechanical propertiesbiological samplescontact mechanics modelsdata processing
spellingShingle Stylianos Vasileios Kontomaris
Andreas Stylianou
Georgios Chliveros
Anna Malamou
Overcoming Challenges and Limitations Regarding the Atomic Force Microscopy Imaging and Mechanical Characterization of Nanofibers
Fibers
AFM artifacts
tip convolution effects
mechanical properties
biological samples
contact mechanics models
data processing
title Overcoming Challenges and Limitations Regarding the Atomic Force Microscopy Imaging and Mechanical Characterization of Nanofibers
title_full Overcoming Challenges and Limitations Regarding the Atomic Force Microscopy Imaging and Mechanical Characterization of Nanofibers
title_fullStr Overcoming Challenges and Limitations Regarding the Atomic Force Microscopy Imaging and Mechanical Characterization of Nanofibers
title_full_unstemmed Overcoming Challenges and Limitations Regarding the Atomic Force Microscopy Imaging and Mechanical Characterization of Nanofibers
title_short Overcoming Challenges and Limitations Regarding the Atomic Force Microscopy Imaging and Mechanical Characterization of Nanofibers
title_sort overcoming challenges and limitations regarding the atomic force microscopy imaging and mechanical characterization of nanofibers
topic AFM artifacts
tip convolution effects
mechanical properties
biological samples
contact mechanics models
data processing
url https://www.mdpi.com/2079-6439/11/10/83
work_keys_str_mv AT stylianosvasileioskontomaris overcomingchallengesandlimitationsregardingtheatomicforcemicroscopyimagingandmechanicalcharacterizationofnanofibers
AT andreasstylianou overcomingchallengesandlimitationsregardingtheatomicforcemicroscopyimagingandmechanicalcharacterizationofnanofibers
AT georgioschliveros overcomingchallengesandlimitationsregardingtheatomicforcemicroscopyimagingandmechanicalcharacterizationofnanofibers
AT annamalamou overcomingchallengesandlimitationsregardingtheatomicforcemicroscopyimagingandmechanicalcharacterizationofnanofibers