16 April 2016 Feasibility of transparent flexible ultrasonic haptic actuator
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Ultrasonic haptics actuator is a device that can create a haptic feedback to user’s hand. The modulation of ultrasonic frequency can give different textures to the users. In this study, a feasibility of the ultrasonic haptic actuator made on a flexible piezoelectric substrate is investigated. As the piezoelectric substrate helps to propagate flexural waves, a pair of interdigital transducer (IDT) with reflectors can produce standing waves, which can increase the vibrational displacement of the actuator. A pair of IDT pattern was fabricated on a piezoelectric polymer substrate. A finite element analysis is at first performed to design the actuator. A sinusoidal excitation voltage is applied on IDT electrodes at ultrasonic frequencies and the displacement waveforms are found. The displacement waveforms clearly represent how ultrasonic waves propagate through the piezoelectric substrate.
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Asma Akther, Asma Akther, Abdullahil Kafy, Abdullahil Kafy, Hyun Chan Kim, Hyun Chan Kim, Jaehwan Kim, Jaehwan Kim, "Feasibility of transparent flexible ultrasonic haptic actuator", Proc. SPIE 9802, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2016, 98021S (16 April 2016); doi: 10.1117/12.2219654; https://doi.org/10.1117/12.2219654

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