Ketsuro-Graffiti
Yuki Tsujimoto, Yuichi Itoh, Takao Onoye · 2016
In this paper, we propose a novel interactive display, Ketsuro-Graffiti, that provides information with water condensation. Recently, a lot of substantial displays have been proposed that utilize various types of physical material. These displays enable users to touch each pixel freely. Water condensation exists ubiquitously in daily life, and drawing on it is familiar. Therefore, a display with water condensation achieves an intuitive and familiar interaction between users and information. We propose a method to control generation and evaporation of water condensation and implement two prototypes of Ketsuro-Graffiti using peltier devices. One prototype uses an open loop control system and the other uses a PID closed loop control system with thermistors. Our evaluation of system performance indicates that both prototypes can control generation, evaporation, and thickness of water condensation.