Hydrodynamics of oscillating atomic force microscopy cantilevers in viscous fluids

Autor:	Cédric Jai, Touria Cohen-Bouhacina, Abdelhamid Maali, Jean-Pierre Aimé, Cedric Hurth, Rodolphe Boisgard
Rok vydání:	2005
Předmět:	Physics Vibration Transverse plane Cantilever Normal mode Oscillation General Physics and Astronomy Mechanics Dissipation Navier–Stokes equations Beam (structure)
Zdroj:	Journal of Applied Physics. 97:074907
ISSN:	1089-7550 0021-8979
Popis:	We present a study of thermal noise of commercially available atomic force microscopy (AFM) cantilevers in air and in water. The purpose of this work is to investigate the oscillation behavior of a clamped AFM microlever in liquids. Up to eight vibration modes are recorded. The experimental results are compared to theoretical predictions from the hydrodynamic functions corresponding to rigid transverse oscillations of an infinitely long rectangular beam. Except for the low-frequency modes, the known hydrodynamic functions cannot describe the amount of dissipated energy due to the liquid motion induced by the cantilever oscillation. The observed variation of the damping coefficient is smaller than the one predicted. The difference at higher modes between the mentioned theoretical description and experimental results is discussed with the help of numerical solutions of the three-dimensional Navier–Stokes equation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95fc16d738cd2398d398c0a4139f547c https://doi.org/10.1063/1.1873060 Zobrazit plný text záznamu