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Arbitrary-shaped and flexible piezoelectric skin sensor based on Sol-gel spraying technique

Kei Nakatsuma
Kumamoto University

February 20, 2018 at  10:00 AM
McConnell Engineering Room 437


Current skin sensors (touch sensors) are mainly optimized for flat surfaces such as smartphones, tablets, etc. Their form (mainly sheet shape) is not suitable for applying robots with arbitrary shapes. We introduce a piezoelectric skin sensor fabricated with the sol-gel spraying technique which was originally invented at National Research Council Canada. The technique enables directly forming a piezoelectric film, which is the core of the skin sensor, on a robot and other base materials including mobile devices' bodies by spraying piezoelectric material's sol-gel solution. The sensor is flexible and completely adhere tightly to the robot's surface. The piezoelectric film has some advantages as a force sensor and a ultrasound transducer. We show the progress of our project and some applications.


Kei Nakatsuma (Ph.D., the University of Tokyo, 2012) is an assistant professor in the department of Mechanical System Engineering, the Robot, Control and Instrumentation Group, and CAST (Research Core of Advanced Sensing Technology) of Kumamoto University. He received the BE, ME, and Ph.D. degrees from the University of Tokyo, in 2007, 2009, 2012, respectively. He was a research fellow at JSPS from 2009 to 2012. His research focuses on application oriented sensing systems and devices especially for haptic technologies (sensing, displaying, and communication).