On the Implementation of Mode Localization Between Physical and Digital Resonators

Humbert, Claude; Mérou, Gwenhael Goavec; Bertin, Thomas; Kacem, Najib; Walter, Vincent; Leblois, Thérèse

doi:10.1109/ultsym.2018.8580140

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…Therefore, we hereby suggest an alternative with a system based on a first mechanical resonator coupled to a second resonator having a different physical nature that allows to tune it. Such a hybrid approach has already been investigated for MEMS characterization using electrical resonators [10] having a Qfactor of 1000 and we previously demonstrated the possibility to generate modes in a system made of an electrical resonator having a Q-factor of 20 and a digital device [11]. In this work and for the first time to our knowledge, we set up a two-degree-of-freedom (DoF) coupled system made of piezoelectric resonators (QCM) with Q-factors exceeding 10 5 .…”

Section: Introductionmentioning

confidence: 99%

Implementation of a tunable hybrid system with coupled high Q-factor resonators based on mode localization for sensing purposes

Humbert

Goavec-Mérou

Walter

et al. 2020

Smart Mater. Struct.

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In this paper, we present a fully tunable system able to generate mode localization between a 170 000 Q-factor quartz crystal microbalance at 1 MHz and a digital device (field programmable gate array) simulating in real time the presence of an identical and weakly-coupled second resonator. Indeed, this method allows to precisely select each parameter value and thus to reach the optimal configuration with the maximum sensitivity to perturbations. In addition, this design gives a perfect adaptability to the geometry of the piezoelectric resonator, that allows to work with much higher frequencies and Q-factors than conventional cantilevers or tuning-forks usually selected for the design of mode-localized sensors. The experimental sensitivities reached in this work are at least two orders of magnitude higher than the ones found in the literature, which is promising for the design of a new generation of ultrasensitive sensors based on Anderson localization.

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Section: Introductionmentioning

confidence: 99%

Implementation of a tunable hybrid system with coupled high Q-factor resonators based on mode localization for sensing purposes

Humbert

Goavec-Mérou

Walter

et al. 2020

Smart Mater. Struct.

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“…Tunable ML has already been demonstrated on electrical resonators [ 18 ] and a device following the same principle has also been recently presented, where a cantilever is virtually coupled with an electrical resonator made of passive and active components to achieve sensitive mass sensing by means of ML [ 19 ]. Finally, in previous publications were shown the principle of virtualization [ 20 , 21 ], where only digital perturbations were applied.…”

Section: Introductionmentioning

confidence: 99%

Towards an Ultra Sensitive Hybrid Mass Sensor Based on Mode Localization without Resonance Tracking

Humbert

Walter

Kacem

et al. 2020

Sensors

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We present a mode localized mass sensor prototype based on a hybrid system excited at a fixed frequency slightly below the resonances. Indeed, we show, both theoretically and experimentally, that this condition yields higher sensitivities and similar sensitivity ranges than that of resonance peak tracking while being less time consuming than a classical open-loop configuration due to the absence of frequency sweep. The system is made of a quartz resonator and a hardware that includes a resonator and the coupling. The digital aspect allows maximum sensitivity to be achieved with a fine tuning of the different parameters and the implementation of a coupling, regardless of the physical resonator geometry. This allows the generation of mode localization on shear waves resonant structures such as the quartz cristal microbalance widely used in biosensing. This solution has been successfully implemented using resin micro balls depositions. The sensitivities reach almost their maximum theoretical values which means this fixed frequency method has the potential to reach lower limit of detection than the open loop frequency tracking method.

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On the Implementation of Mode Localization Between Physical and Digital Resonators

Cited by 2 publications

References 12 publications

Implementation of a tunable hybrid system with coupled high Q-factor resonators based on mode localization for sensing purposes

Implementation of a tunable hybrid system with coupled high Q-factor resonators based on mode localization for sensing purposes

Towards an Ultra Sensitive Hybrid Mass Sensor Based on Mode Localization without Resonance Tracking

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