JOLED: a mid-air display based on electrostatic rotation of levitated Janus objects

Sahoo, Deepak Ranjan, Nakamuta, Takuto, Marzo, Asier, Omirou, Themis, Asakawa, Michihiro and Subramanian, Sriram (2016) JOLED: a mid-air display based on electrostatic rotation of levitated Janus objects. UIST 2016: 29th ACM User Interface Software and Technology Symposium, Tokyo, Japan, October 16-19, 2016. Published in: Proceedings of the 29th Annual Symposium on User Interface Software and Technology. 437-488. Association for Computing Machinery ISBN 9781450341899

This is the latest version of this item.

[img] PDF - Accepted Version
Download (19MB)


We present JOLED, a mid-air display for interactive physical visualization using Janus objects as physical voxels. The Janus objects have special surfaces that have two or more asymmetric physical properties at different areas. In JOLED, they are levitated in mid-air and controllably rotated to reveal their different physical properties. We made voxels by coating the hemispheres of expanded polystyrene beads with different materials, and applied a thin patch of titanium dioxide to induce electrostatic charge on them. Transparent indium tin oxide electrodes are used around the levitation volume to create a tailored electric field to control the orientation of the voxels. We propose a novel method to control the angular position of individual voxels in a grid using electrostatic rotation and their 3D position using acoustic levitation. We present a display in which voxels can be flipped independently, and two mid-air physical games with a voxel as the playable character that moves in 3D across other physical structures and rotates to reflect its status in the games. We demonstrate a voxel update speed of 37.8 ms/flip, which is video-rate.

Item Type: Conference Proceedings
Keywords: User interfaces, Graphical user interfaces, interaction styles, prototyping, screen design, user-centered design, Human-computer interaction, Emerging interfaces, Three-dimensional displays, Actuated surfaces, Shape-changing displays, Midair displays, Electrostatic actuation, Acoustic levitation, Janus particles
Schools and Departments: School of Engineering and Informatics > Informatics
Subjects: Q Science > QC Physics > QC0221 Acoustics. Sound
Q Science > QC Physics > QC0501 Electricity and magnetism > QC0522 Electricity
T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA0168 Systems engineering
Related URLs:
Depositing User: Deepak Sahoo
Date Deposited: 12 Oct 2016 12:18
Last Modified: 13 Jun 2018 16:06

Available Versions of this Item

View download statistics for this item

📧 Request an update
Project NameSussex Project NumberFunderFunder Ref
Interact-Interactive Systems Involving Multi-Point Surfaces, Haptics and true-3D displaysG1686EUROPEAN UNION278576
Ghost-eneric, highly-organic shape-changing interfacesUnsetEUROPEAN UNION309191