TableHop: an actuated fabric display using transparent electrodes

TY - GEN

T1 - TableHop

T2 - 34th Annual CHI Conference on Human Factors in Computing Systems

AU - Sahoo, Deepak Ranjan

AU - Hornbæk, Kasper

AU - Subramanian, Sriram

N1 - Conference code: 34

PY - 2016/5/7

Y1 - 2016/5/7

N2 - 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 cm2 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.

AB - 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 cm2 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.

KW - actuated surfaces, actuated tangible interfaces, deformable displays, electrostatic actuation, haptic feedback, human-computer interaction, shape-changing displays

U2 - 10.1145/2858036.2858544

DO - 10.1145/2858036.2858544

M3 - Article in proceedings

SN - 978-1-4503-3362-7

SP - 3767

EP - 3780

BT - Proceedings - the 34th Annual CHI Conference on Human Factors in Computing Systems

PB - Association for Computing Machinery

Y2 - 7 May 2016 through 12 May 2016

ER -