title: An improved dynamic model of tuning fork probe for scanning probe microscopy.
abstract: This paper presents a two coupled oscillators model to describe the dynamics of a tuning fork with a probe attached. The two coupled oscillators are unbalanced only in their effective masses and the damping ratios. By applying a frequency domain system identification approach in experimental investigation of various probe attachment cases, a good accuracy of the model is demonstrated. The effectiveness of the model is further demonstrated in quantitative analysis of the noise performance and the sensitivity of force sensing with a tuning fork probe. Compared with existing models, the proposed model can more accurately characterize the dynamics of a tuning fork probe.
authors.affiliation: Singapore Institute of Manufacturing Technology, 71 Nanyang Avenue, Singapore 638075, Singapore.
authors.forename: B P
authors.initials: BP
authors.lastname: Ng
authors.forename: Y
authors.initials: Y
authors.lastname: Zhang
authors.forename: S W
authors.initials: SW
authors.lastname: Kok
authors.forename: Y C
authors.initials: YC
authors.lastname: Soh