Resonating tactile stimulators based on piezoelectric polymer films
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We have designed, fabricated and tested piezoelectric polymer (Polyvinylidene fluoride, PVDF) film-based resonating actuators for tactile stimulation. The proposed resonating tactile stimulators are composed of 3×4 stimulating dot arrays with polyimide membranes. The air chambers placed on the PVDF films aid in indirect piezoelectric actuation and produce lower spring stiffnesses than are associated with conventional direct piezoelectric actuation. They can achieve large displacements with low input voltages. The performance of the proposed resonating tactile stimulators was characterized. The stimulators achieve an output displacement of 257.0 ± 1.5 nm, output pressure of 339.1 N/m2, and response time of 0.7 ms when an input voltage of 80 Vpk (52.5 kHz) is switched at 2 ms intervals (250 Hz). It has been experimentally demonstrated that the proposed flexible resonating actuators are capable of stimulating human skin to support tactile or braille displays integrated into tactile interface systems.
KeywordsPiezoelectric resonator Piezoelectric polymer Polymer actuator Tactile stimulator
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- J. S. Lee, K.-Y. Shin, O. J. Cheong, J. H. Kim and J. Jang, Highly sensitive and multifunctional tactile sensor using free-standing ZnO/PVDF thin film with graphene electrodes for pressure and temperature monitoring, Sci. Rep., 5 (7887) (2015) 1–8.Google Scholar
- V. M. Mastronardi, L. Ceseracciu, F. Guido, F. Rizzi, A. Athanassiou, M. De Vittorio and S. Petroni, Low stiffness tactile transducers based on AlN thin film and polyimide, Appl. Phys. Lett., 106, 162901 (2015) 1–5.Google Scholar
- S. Gong, W. Schwalb, Y. Wang, Y. Chen, Y. Tang, J. Si, B. Shirinzadeh and W. Cheng, A wearable and highly sensitive pressure sensor with ultrathin gold nanowires, Nat. Commun., 5 (3132) (1992) 1–8.Google Scholar
- Y. Qiu, J. V. Gigliotti, M. Wallace, F. Griggio, C. E. M. Demore, S. Cochran and S. T. McKinstry, Piezoelectric micromachined ultrasound transducer (PMUT) arrays for integrated sensing, actuation and imaging, Sensors, 15 (4) (2015) 8020–8041.Google Scholar
- E. B. Goldstein, Sensation and perception, Ninth Ed., Wadsworth, Belmont, USA (2013).Google Scholar
- M. Fritschi, M. Buss, K. Drewing, R. Zopf and M. O. Ernst, Tactile feedback systems, Proc. of the International Conference on Intelligent Robots and Systems, Sendai, Japan (2004) 1–21.Google Scholar
- M. G. Allen, M. Mehregany, R. T. Howe and S. D. Senturia, Microfabricated structures for the in situ measurement of residual stress, Young’s modulus, and ultimate strain of thin films, Appl. Phys. Lett., 51 (4) (1987) 241–243.Google Scholar
- American national standard: Accessible and usable buildings and facilities, Standard and Commentary ICC/ANSI A117.1-2003., USA (2003).Google Scholar
- S. S. Rao, Mechanical vibrations, Pearson Education, Inc., New Jersey, USA (2004).Google Scholar
- I. O. Wygant, M. Kupnik and B. T. Khuri-Yakub, Analytically calculating membrane displacement and the equivalent circuit model of a circular CMUT cell, Proc. of the International Symposium on IEEE Ultrasonics, Beijing, China (2008) 2111–2114.Google Scholar