TableHop_camera_ready.pdf (6.92 MB)
TableHop: an actuated fabric display using transparent electrodes
conference contribution
posted on 2023-06-08, 23:52 authored by Deepak Ranjan Sahoo, Kasper Hornbæk, Sriram SubramanianWe 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 high-resolution visual projection. The TableHop surface is made of a highly stretchable pure spandex fabric that is electrostatically actuated using electrodes mounted on its underside. We use transparent indium tin oxide electrodes and high-voltage modulation to create controlled surface deformations. This setup actuates pixels and creates deformations in the fabric up to $\pm$ 5mm. Since the electrodes are transparent, the fabric surface can function as a diffuser for rear-projected visual images, and avoid occlusion by users. Users can touch and interact with the fabric to create expressive interactions as with any fabric based shape-changing interface. By using frequency modulation in the high-voltage circuit, we can also create localised tactile sensations on the user's finger-tip when touching the surface. We provide detailed simulation results of the shape of the surface deformation and the frequency of the haptic vibrations. These results can be used to build prototypes of different sizes and form-factors. We finally create a working prototype of TableHop that has 30$\times$40 cm surface area and uses a grid of 3$\times$3 transparent electrodes. Our prototype uses a maximum of 2.2 mW and can create tactile vibrations of up to 20 $Hz$. TableHop can be scaled to large interactive surfaces and integrated with other objects and devices. TableHop will improve user interaction experience on 2.5D deformable displays.
Funding
GHOST; EC FP7 FET Open Scheme; 309191
INTERACT; ERC Starting Grant; 278576
History
Publication status
- Published
File Version
- Accepted version
Journal
CHI '16 Proceedings of the 2016 CHI Conference on Human Factors in Computing SystemsPublisher
Association for Computing MachineryExternal DOI
Page range
3767-3780Event name
CHI'16 - 34th Annual ACM Conference on Human Factors in Computing SystemsEvent location
San Jose, California, USAEvent type
conferenceEvent date
May 07-12, 2016ISBN
9781450333627Department affiliated with
- Informatics Publications
Full text available
- Yes
Peer reviewed?
- Yes