Theory of Single-Impact Atomic Force Spectroscopy in liquids with material contrast

Abstract Scanning probe microscopy has enabled nanoscale mapping of mechanical properties in important technological materials, such as tissues, biomaterials, polymers, nanointerfaces of composite materials, to name only a few. To improve and widen the measurement of nanoscale mechanical properties,...

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Autores principales:	Enrique A. López-Guerra, Francesco Banfi, Santiago D. Solares, Gabriele Ferrini
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/dc55e19766744da0a8c3be14b65718e1
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spelling	oai:doaj.org-article:dc55e19766744da0a8c3be14b65718e12021-12-02T11:40:53ZTheory of Single-Impact Atomic Force Spectroscopy in liquids with material contrast10.1038/s41598-018-25828-42045-2322https://doaj.org/article/dc55e19766744da0a8c3be14b65718e12018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25828-4https://doaj.org/toc/2045-2322Abstract Scanning probe microscopy has enabled nanoscale mapping of mechanical properties in important technological materials, such as tissues, biomaterials, polymers, nanointerfaces of composite materials, to name only a few. To improve and widen the measurement of nanoscale mechanical properties, a number of methods have been proposed to overcome the widely used force-displacement mode, that is inherently slow and limited to a quasi-static regime, mainly using multiple sinusoidal excitations of the sample base or of the cantilever. Here, a different approach is put forward. It exploits the unique capabilities of the wavelet transform analysis to harness the information encoded in a short duration spectroscopy experiment. It is based on an impulsive excitation of the cantilever and a single impact of the tip with the sample. It performs well in highly damped environments, which are often seen as problematic in other standard dynamic methods. Our results are very promising in terms of viscoelastic property discrimination. Their potential is oriented (but not limited) to samples that demand imaging in liquid native environments and also to highly vulnerable samples whose compositional mapping cannot be obtained through standard tapping imaging techniques.Enrique A. López-GuerraFrancesco BanfiSantiago D. SolaresGabriele FerriniNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-16 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Enrique A. López-Guerra Francesco Banfi Santiago D. Solares Gabriele Ferrini Theory of Single-Impact Atomic Force Spectroscopy in liquids with material contrast
description	Abstract Scanning probe microscopy has enabled nanoscale mapping of mechanical properties in important technological materials, such as tissues, biomaterials, polymers, nanointerfaces of composite materials, to name only a few. To improve and widen the measurement of nanoscale mechanical properties, a number of methods have been proposed to overcome the widely used force-displacement mode, that is inherently slow and limited to a quasi-static regime, mainly using multiple sinusoidal excitations of the sample base or of the cantilever. Here, a different approach is put forward. It exploits the unique capabilities of the wavelet transform analysis to harness the information encoded in a short duration spectroscopy experiment. It is based on an impulsive excitation of the cantilever and a single impact of the tip with the sample. It performs well in highly damped environments, which are often seen as problematic in other standard dynamic methods. Our results are very promising in terms of viscoelastic property discrimination. Their potential is oriented (but not limited) to samples that demand imaging in liquid native environments and also to highly vulnerable samples whose compositional mapping cannot be obtained through standard tapping imaging techniques.
format	article
author	Enrique A. López-Guerra Francesco Banfi Santiago D. Solares Gabriele Ferrini
author_facet	Enrique A. López-Guerra Francesco Banfi Santiago D. Solares Gabriele Ferrini
author_sort	Enrique A. López-Guerra
title	Theory of Single-Impact Atomic Force Spectroscopy in liquids with material contrast
title_short	Theory of Single-Impact Atomic Force Spectroscopy in liquids with material contrast
title_full	Theory of Single-Impact Atomic Force Spectroscopy in liquids with material contrast
title_fullStr	Theory of Single-Impact Atomic Force Spectroscopy in liquids with material contrast
title_full_unstemmed	Theory of Single-Impact Atomic Force Spectroscopy in liquids with material contrast
title_sort	theory of single-impact atomic force spectroscopy in liquids with material contrast
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/dc55e19766744da0a8c3be14b65718e1
work_keys_str_mv	AT enriquealopezguerra theoryofsingleimpactatomicforcespectroscopyinliquidswithmaterialcontrast AT francescobanfi theoryofsingleimpactatomicforcespectroscopyinliquidswithmaterialcontrast AT santiagodsolares theoryofsingleimpactatomicforcespectroscopyinliquidswithmaterialcontrast AT gabrieleferrini theoryofsingleimpactatomicforcespectroscopyinliquidswithmaterialcontrast
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Theory of Single-Impact Atomic Force Spectroscopy in liquids with material contrast

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