Sinkpad

Although reliefs are frequently used to add patterns to product surfaces, there is a lack of interaction techniques to model reliefs on the surface of virtual objects. We adopted the repoussé and chasing artwork techniques in an alternative interaction technique to model relief on virtual surfaces. To support this interaction technique, we developed the double-sided touchpad Trampoline that can detect the position and force of a finger touch on both sides. Additionally, Trampoline provides users with elastic feedback, as its surface consists of a stretchable fabric. We implemented a relief application with this device and the developed interaction technique. An informal user study showed that the proposed system can be a promising solution to create reliefs.

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TableHop

Sahoo

Hornbæk

Subramanian

2016

Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems

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We present TableHop, a tabletop display that provides controlled self-actuated deformation and vibro-tactile feedback to an elastic fabric surface while retaining the ability for highresolution visual projection. The surface is made of a highly stretchable pure spandex fabric that is electrostatically actuated using electrodes mounted on its top or underside. It uses transparent indium tin oxide electrodes and high-voltage modulation to create controlled surface deformations. Our setup actuates pixels and creates deformations in the fabric up to ±5 mm. Since the electrodes are transparent, the fabric surface functions as a diffuser for rear-projected visual images, and avoid occlusion by users or actuators. Users can touch and interact with the fabric to experience expressive interactions as with any fabric based shape-changing interface. By using frequency modulation in the high-voltage circuit, it can also create localized tactile sensations on the user's fingertip when touching the surface. We provide simulation and experimental results for the shape of the deformation and frequency of the vibration of the surface. These results can be used to build prototypes of different sizes and form-factors. We present a working prototype of TableHop that has 30×40 cm 2 surface area and uses a grid of 3×3 transparent electrodes. It uses a maximum of 9.46 mW and can create tactile vibrations of up to 20 Hz. TableHop can be scaled to make large interactive surfaces and integrated with other objects and devices. TableHop will improve user interaction experience on 2.5D deformable displays.

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Sinkpad

Cited by 6 publications

References 12 publications

Mouse Augmentation Using a Malleable Mouse Pad

Mouse Augmentation Using a Malleable Mouse Pad

Trampoline

TableHop

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