2013
DOI: 10.3390/s130607156
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Finite Element Analysis of Electrically Excited Quartz Tuning Fork Devices

Abstract: Quartz Tuning Fork (QTF)-based Scanning Probe Microscopy (SPM) is an important field of research. A suitable model for the QTF is important to obtain quantitative measurements with these devices. Analytical models have the limitation of being based on the double cantilever configuration. In this paper, we present an electromechanical finite element model of the QTF electrically excited with two free prongs. The model goes beyond the state-of-the-art of numerical simulations currently found in the literature fo… Show more

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Cited by 24 publications
(21 citation statements)
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“…The mostly reported [42][43][44][45][46] electrical analogy of the QTF is the Butterworth-Van Dyke equivalent circuit, i.e. a RLC branch (impedance: Z RLC (f ) = R+jL2πf +1/(jC2πf ), with j 2 = −1) in parallel with a capacitance C L , both being electrically loaded by a common AC voltage supply V sup (cf.…”
Section: Electrical Equivalencementioning
confidence: 99%
“…The mostly reported [42][43][44][45][46] electrical analogy of the QTF is the Butterworth-Van Dyke equivalent circuit, i.e. a RLC branch (impedance: Z RLC (f ) = R+jL2πf +1/(jC2πf ), with j 2 = −1) in parallel with a capacitance C L , both being electrically loaded by a common AC voltage supply V sup (cf.…”
Section: Electrical Equivalencementioning
confidence: 99%
“…The effective mass depends on the fork geometry and for a rectangular cross section prong is predicted to be approximately = 0.243 , where V = T·W·L is the volume, T the thickness, W the width and L the length of the prong and ρq is the quartz density. The effective spring constant k is proportional to the Young's modulus E [15]:…”
Section: Laser Lightmentioning
confidence: 99%
“…Electronic watches, smartphones, digital electronics, and synchronization for asynchronous communications are built around high-Q QTFs as frequency standards. Usually QTFs with a resonant frequency of 2 15 or ~32,768 Hz are used in this application. A QTF behaves as acoustic quadrupole in which case only the anti-symmetric mode is piezoelectric active (in which case the prongs move in opposite directions).…”
Section: Introductionmentioning
confidence: 99%
“…D. van Vörden e colaboradores criaram modelos para o modo qPlus [30], também estudado por J. Falter e colaboradores [31]; enquanto R. Oria e L. González fizeram simulações com o QTF excitado elé-tricamente [32,33]. Os resultados refentes à constante elástica real do QTF são constraditórios.…”
Section: Diagrama De Blocos Do Sistema De Ganhos Pid O Sinal De Inteunclassified
“…S.-H. Song [39] foi o primeiro a evidenciar a necessidade de estar num regime linear para garantir uma boa relação sinal-ruído; enquanto R. Oria e colaboradores [32] e L. Gonzalez e colaboradores [33] usaram para garantir a validação dos modelos teóricos usados em Elementos Finitos. Na Estabelecida a linearidade da resposta do sensor, e sabendo k QTF , é possível estimar sua amplitude de vibração igualando-se a energia fornecida e perdida durante um ciclo [63].…”
Section: Linearidade E Estimativa Da Amplitude De Vibraçãounclassified