lapillus bug


lapillus bug is an atomic creature that hovers over a breakfast plate. An inorganic particle is trapped in mid-air by ultrasonic waves. The bug also interacts with humans. Focused 40kHz ultrasonic waves are produced from an ultrasonic phased array that is settled on the plate. Styrofoam grains are trapped in the nodes of the standing waves, which enables them to stay in mid-air. This work aims to extract and express creature-like behaviors from inanimate objects by an external force. Computer-controlled movements and accidental movements caused by the physical matter express creature-like behavior. Emerging technologies help to visually recognize and represent the hidden and involved spiritual features of matter.


  • Michinari Kono, Takayuki Hoshi, and Yasuaki Kakehi. lapillus bug: Creature-like Behaving Particles Based on Mid-Air Acoustic Manipulation and Interaction with them. Journal of The Virtual Reality Society of Japan, Vol.19, No.4, pp.615-624, 2014. (Peer Review)
  • Michinari Kono, Takayuki Hoshi, and Yasuaki Kakehi. 2014. lapillus bug: creature-like behaving particles based on interactive mid-air acoustic manipulation. In Proceedings of the 11th Conference on Advances in Computer Entertainment Technology (ACE ’14). ACM, New York, NY, USA, Article 34, 8 pages. DOI: (Peer Review)

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