Bertrand Nongaillard

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This paper presents a theoretical study on the possible realization of high frequency ultrasonic phased array transducer (f&#x003E;100 MHz) using MEMS technologies. A silicon based lithium niobate (LiNbO<inf>3</inf>) single crystal linear array is considered. Finite element method is employed for the simulation optimization design of such device. Continuous(More)
A 100 MHz high resolution ultrasonic micro-transducer with a focal lens is designed for medical imaging based on monocrystalline lithium niobate (LiNbO<inf>3</inf>) 36&#x00B0;/Y-cut. Finite element analysis is used to characterize the impulse response of this transducer and the stationary wave propagation. The results show that the focal lens attributes a(More)
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