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Electrovibration and squeeze film effect are two different principles, which modify the user’s perception of a surface. The first one is generated by the polarization of a finger approaching a high voltage supplied plate, and the latter by the ultrasonic vibration of a plate. Their compatibility on the same stimulator will be presented in this paper and their concomitant use will be proven. A parametric study on electrovibration in function of the material choice and a first experimental investigation of the validity of the squeeze film effect hypothesis are performed. A description of the physical principle and the characteristics of each effect will be proposed and force measurements of their coupling will be presented.
tactile stimulators, ultrasonic vibration, squeeze film effect, electrovibration, haptic, tactile devices
The authors would like to thanks Thomas Sednaoui from STMicroelectronics- L2EP for the collaboration. This work has been supported by the European Union under the FP7 programs FP7-PEOPLE-317100 PROTOTOUCH.
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