Digital fabrication and manipulation method for underwater display and entertainment.

Underwater expression is attractive. It seems like underwater objects are floating like anti-gravity scape by buoyancy and it is also impressive that bubbles rise while refracting the light. In this work, we aim to combine digital fabrication with interactive technology and expand underwater expression. To achieve this, we focused on a classic science experiment called the Cartesian Diver. Because of growing interest in the materialization of computer graphics, digital fabrication technologies have recently emerged as one of the most important application fields in real-world-oriented computer graphics. In particular, research on digital fabrication that gives dynamics properties is common. Spin-it [Bächer et al. 2014] presents design method for spinning objects by optimizing rotational dynamics properties. Some studies use non-contact manipulation. For example, ZeroN [Lee et al. 2011] controls the magnetic field to manipulate the object and uses it as a floating screen and input user interface(UI). Our work connects digital fabrication and non-contact manipulation that uses the space transmission power (water pressure) around the object (the diver). [Koike et al. 2016] proposes a design and manipulation method for the diver. In this work, we updated the method and investigate stability of PID control. Furthermore, we propose some applications.