University of Sussex
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TableHop: an actuated fabric display using transparent electrodes

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conference contribution
posted on 2023-06-08, 23:52 authored by Deepak Ranjan Sahoo, Kasper Hornbæk, Sriram Subramanian
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 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.


GHOST; EC FP7 FET Open Scheme; 309191

INTERACT; ERC Starting Grant; 278576


Publication status

  • Published

File Version

  • Accepted version


CHI '16 Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems


Association for Computing Machinery

Page range


Event name

CHI'16 - 34th Annual ACM Conference on Human Factors in Computing Systems

Event location

San Jose, California, USA

Event type


Event date

May 07-12, 2016



Department affiliated with

  • Informatics Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

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First Open Access (FOA) Date


First Compliant Deposit (FCD) Date