Enhancing physicality in touch interaction with programmable friction
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Frictional widgets: enhancing touch interfaces with programmable friction
CHI '11 Extended Abstracts on Human Factors in Computing Systems
Electrostatic modulated friction as tactile feedback: intensity perception
EuroHaptics'12 Proceedings of the 2012 international conference on Haptics: perception, devices, mobility, and communication - Volume Part I
Novel thin electromagnetic system for creating pushbutton feedback in automotive applications
EuroHaptics'12 Proceedings of the 2012 international conference on Haptics: perception, devices, mobility, and communication - Volume Part I
Stylus-Based Tele-Touch System using a Surface Acoustic Wave Tactile Display
International Journal of Intelligent Mechatronics and Robotics
Surface haptic interactions with a TPad tablet
Proceedings of the adjunct publication of the 26th annual ACM symposium on User interface software and technology
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We describe a variable friction haptic display on a large area of glass, and characterize its performance. The Large Area Tactile Pattern Display (LATPaD) uses modulation of surface friction created by ultrasonic vibration, as in previous smaller devices [8]. Unlike those, the LATPaD does not operate in the lowest resonant mode. As a consequence, the vibration amplitude varies across the surface of the LATPaD (being zero at nodal lines) and therefore the friction reduction effect varies spatially. In practice, the variation in friction reduction is less than might be expected, due to the finite extent of the finger pad. We measure friction over the surface for several mode shapes.