A Plate-Like Sensor for the Identification of Sample Viscoelastic Properties Using Contact Resonance Atomic Force Microscopy

Autor:	Matteo Aureli, Ryan C. Tung
Rok vydání:	2021
Předmět:	010302 applied physics Materials science Atomic force microscopy 0103 physical sciences Resonance 02 engineering and technology General Medicine 021001 nanoscience & nanotechnology 0210 nano-technology 01 natural sciences Molecular physics Sample (graphics) Viscoelasticity
Zdroj:	ASME Letters in Dynamic Systems and Control. 1
ISSN:	2689-6125 2689-6117
DOI:	10.1115/1.4049538
Popis:	In this article, we present a new contact resonance atomic force microscopy-based method utilizing a square, plate-like microsensor to accurately estimate viscoelastic sample properties. A theoretical derivation, based on Rayleigh–Ritz method and on an “unconventional” generalized eigenvalue problem, is presented and a numerical experiment is devised to verify the method. We present an updated sensitivity criterion that allows users, given a set of measured in-contact eigenfrequencies and modal damping ratios, to select the best eigenfrequency for accurate data estimation. The verification results are then presented and discussed. Results show that the proposed method performs extremely well in the identification of viscoelastic properties over broad ranges of nondimensional sample stiffness and damping values.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::454db4331fbbbb3a577d869ac43a5c49 https://doi.org/10.1115/1.4049538 Zobrazit plný text záznamu