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- Dominique Certon, Franck Teston, Frédéric Patat
- IEEE transactions on ultrasonics, ferroelectrics…
- 2005

A finite difference method was implemented to simulate capacitive micromachined ultrasonic transducers (cMUTs) and compared to models described in the literature such as finite element methods. Similar results were obtained. It was found that one master curve described the clamped capacitance. We introduced normalized capacitance versus normalized bias… (More)

- Cyril Meynier, Franck Teston, Dominique Certon
- The Journal of the Acoustical Society of America
- 2010

A model is developed for studying the acoustic behavior of a cMUT array. This model is based on separate calculations of the terms describing the behavior of a single cMUT on one hand, and those corresponding to acoustic mutual coupling on the other hand. The terms are combined into an equivalent circuit with matrix terms which displays only one degree of… (More)

- Dominique Certon, Nicolas Felix, Emmanuelle Lacaze, Franck Teston, Frédéric Patat
- IEEE transactions on ultrasonics, ferroelectrics…
- 2001

Plate waves inside the piezoelectric layer are much involved in the elements cross-coupling in transducer arrays for medical imaging. In this work, such waves are analyzed in 1-3 piezocomposite materials on the basis of conventional guided modes formalism in which the piezocomposite is considered as a homogeneous medium. Cross-coupling measurements have… (More)

- Nicolas Sénégond, Audren Boulmé, Camille Plag, Franck Teston, Dominique Certon
- IEEE transactions on ultrasonics, ferroelectrics…
- 2013

We report a fast time-domain model of fluid-coupled cMUTs developed to predict the transient response-i.e., the impulse pressure response--of an element of a linear 1-D array. Mechanical equations of the cMUT diaphragm are solved with 2-D finite-difference schemes. The time-domain solving method is a fourth--order Runge-Kutta algorithm. The model takes into… (More)

- Franck Teston, Guy Feuillard, Laurent Tessier, Marc Lethiecq
- IEEE transactions on ultrasonics, ferroelectrics…
- 1998

In this paper, the concept of electrical effective permittivity function is used to calculate the eigen-frequencies and the particle displacements of piezoelectric acoustic plate modes (APM). These results allowed us to determine the mass sensitivities of the first order vibration modes using a first order perturbation theory. Theoretical results are… (More)

- Bachar Kanj, Franck Teston, Benoît Piro, Minh Chau Pham, Marc Lethiecq
- 2009

Quartz crystal microbalances (QCMs) are largely used in several sectors of activities. More particularly, the gravimetric effect is used to characterize polymeric films during their deposit. The shear acoustic impedance method is used to determine the resonance frequency and quality factor of AT-cut quartz crystal. This double determination makes it… (More)

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