JOLED: A mid-air display based on electrostatic rotation of levitated Janus objects
summary
Mid-air array of Janus beads flips like pixels by combining a phased-array ultrasound trap with tailored electric fields from transparent ITO electrodes; a tiny titanium dioxide patch on each bead induces charge so electrostatic torque rotates beads while the acoustic field holds position. Prototype levitates about 15 beads, achieves video-rate updates at 37.8 ms/flip, measures a minimum ~400 μN torque to start rotation, and runs games where voxels move in 3D and flip independently.
AI-written summary · about
chapters (8)
- 0:00Introduction to JOLED
- 1:32Related work and motivation
- 3:26Key contributions and demo
- 6:04How JOLED works
- 8:46Real-time control and evaluation
- 10:40Power consumption and scalability
- 13:12Future improvements and possibilities
- 15:21Q&A session
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