Characterization of the Mechanical Properties of QPlus Sensors

Overview

Journal Beilstein J Nanotechnol

Specialty Biotechnology

Date 2013 Feb 13

PMID 23399836

Citations 8

Authors

Jan Berger

Martin Svec

Martin Muller

Martin Ledinsky

Antonin Fejfar

Pavel Jelinek

Zsolt Majzik

Affiliations

Soon will be listed here.

Abstract

In this paper we present a comparison of three different methods that can be used for estimating the stiffness of qPlus sensors. The first method is based on continuum theory of elasticity. The second (Cleveland's method) uses the change in the eigenfrequency that is induced by the loading of small masses. Finally, the stiffness is obtained by analysis of the thermal noise spectrum. We show that all three methods give very similar results. Surprisingly, neither the gold wire nor the gluing give rise to significant changes of the stiffness in the case of our home-built sensors. Furthermore we describe a fast and cost-effective way to perform Cleveland's method. This method is based on gluing small pieces of a tungsten wire; the mass is obtained from the volume of the wire, which is measured by optical microscopy. To facilitate detection of oscillation eigenfrequencies under ambient conditions, we designed and built a device for testing qPlus sensors.

Citing Articles

Stiffness calibration of qPlus sensors at low temperature through thermal noise measurements.

Nony L, Clair S, Uehli D, Herrero A, Themlin J, Campos A Beilstein J Nanotechnol. 2024; 15:580-602.

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Sensing Performance Analysis on Quartz Tuning Fork-Probe at the High Order Vibration Mode for Multi-Frequency Scanning Probe Microscopy.

Zhang X, Gao F, Li X Sensors (Basel). 2018; 18(2).

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A simple method for the determination of qPlus sensor spring constants.

Melcher J, Stirling J, Shaw G Beilstein J Nanotechnol. 2015; 6:1733-42.

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Graphene on SiC(0001) inspected by dynamic atomic force microscopy at room temperature.

Telychko M, Berger J, Majzik Z, Jelinek P, Svec M Beilstein J Nanotechnol. 2015; 6:901-6.

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The coefficient of the voltage induced frequency shift measurement on a quartz tuning fork.

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