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TableHop: An actuated fabric display using transparent electrodes
TableHop:An actuated fabric displayusing transparent electrodesDeepak Sahoo, Kasper Hornbk, Sriram SubramanianUniversity of Sussex, University of Copenhagen, University of Sussex,United Kingdom. Denmark. United Kingdom.
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Rich interaction, unique applicationsSelf-actuated (Occlusion)Output device2
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inFORMUIST 13
Actuated DisplaysRich interaction, unique applicationsSelf-actuated (Occlusion)Output device3
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GHOSTERC
Output device4
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ObakeUIST 13
Rich interaction, unique applicationsUser-deformed (not actuated)Input device5
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Troiano et al.AVI 14
Elastic display Rich interaction, unique applicationsUser-deformed (not actuated)Input device6
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Elastic display Rich interaction, unique applicationsUser-deformed (not actuated)Input device7
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TableHopActuatedDisplaysElasticDisplays
Output device8
TableHop 9
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Shape of deformation12
Electrode under side of fabricUniform forceFlatter shape12
Shape of deformation13
Electrode upper side of fabricNon-uniform forceSmoother shapeAnalytical solution340% stretching13
Highly stretchable fabric100% pure spandex fabricMore than 500% stretchable before tearingMore than 300% stretchable with full recovery
Transparent electrodesIndium Tin Oxide coated PET> 80% transparent75 mm bending radius of curvature
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No electric shock
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Calibration: Deformation15
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Calibration: Deformation
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HysteresisBetter HV supply
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Calibration: Speed17
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Calibration: Speed (280 ms 3.6 Hz)
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Better HV supply18
Calibration: Vibration (12 Hz)19
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Calibration: Vibration (1 kV, 1.8 mm)
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Mechanical + electronic responseBetter HV supply20
Applications
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Fabric restores to actuated position after user intervention..25
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DiscussionMild tactile feedback 0.1N force, 12 HzDeformation + vibration signalVisual + tactile cues
Electrostatic actuationLower power consumption (W/mm2)Low mass (100s gm), size (10s cm)Cheap, low noise and scalable
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soft fabric and non-rigid actuation27
Electrode addressingPassive matrix addressingRow and column selection
H-bridge connectionCharging (HV) and discharging (GND)Unselect (HV/2)
Active matrix addressingCustom electrode design
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High-impedance modeSegment addressing28
SummaryAn actuated fabric-displayOffer improved interactionShape-changing display + vibro-tactile feedbackSimple implementation Design guidelinesScalable (portable + low-energy)Novel application and user-experience
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Deepak Sahoo1, Kasper Hornbk2, Sriram Subramanian11University of Sussex, UK. 2University of Copenhagen, Denmark.
TableHop:An actuated fabric displayusing transparent electrodes30
LabInteract