xBalloon: Animated Objects with Balloon Plastic Actuator
Haoran Xie, Takuma Torii, Aoshi Chiba, Qiukai Qi

TL;DR
xBalloon introduces an inexpensive, easy-to-fabricate soft actuator using balloons and plastics, enabling safe, controllable shape-changing interfaces suitable for non-professional users and diverse applications.
Contribution
The paper presents the design, fabrication, and characterization of xBalloon, a novel soft inflatable actuator that is simple, affordable, and effective for shape-changing interfaces.
Findings
xBalloon effectively achieves bending actuation.
The analytical model accurately predicts shape and bending width.
Users with no prior robotics experience can easily fabricate xBalloons.
Abstract
Shape-changing interfaces are promising for users to change the physical properties of common objects. However, prevailing approaches of actuation devices require either professional equipment or materials that are not commonly accessible to non-professional users. In this work, we focus on the controllable soft actuators with inflatable structures because they are soft thus safe for human computer interaction. We propose a soft actuator design, called xBalloon, that is workable, inexpensive and easy-to-fabricate. It consists of daily materials including balloons and plastics and can realize bending actuation very effectively. For characterization, we fabricated xBalloon samples with different geometrical parameters and tested them regarding the bending performance and found the analytical model describing the relationship between the shape and the bending width. We then used xBalloons…
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