ACM SIGGRAPH 2006 Emerging technologies
Gravity grabber: wearable haptic display to present virtual mass sensation
ACM SIGGRAPH 2007 emerging technologies
TILTle: exploring dynamic balance
Proceedings of the 2007 conference on Designing for User eXperiences
Weight-shifting mobiles: two-dimensional gravitational displays in mobile phones
CHI '10 Extended Abstracts on Human Factors in Computing Systems
Shape-changing interfaces: a review of the design space and open research questions
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
ACM SIGGRAPH 2012 Emerging Technologies
Proceedings of the 25th annual ACM symposium on User interface software and technology
Printed optics: 3D printing of embedded optical elements for interactive devices
Proceedings of the 25th annual ACM symposium on User interface software and technology
Fillables: everyday vessels as tangible controllers with adjustable haptics
CHI '13 Extended Abstracts on Human Factors in Computing Systems
Traxion: a tactile interaction device with virtual force sensation
Proceedings of the 26th annual ACM symposium on User interface software and technology
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This paper presents a weight-changing device based on the transfer of mass. We chose liquid metal (Ga-In-Tin eutectic) and a bi-directional pump to control the mass that is injected into or removed from a target object. The liquid metal has a density of 6.44g/cm3, which is about six times heavier than water, and is thus suitable for effective mass transfer. We also combine the device with a dynamic volume-changing function to achieve programmable mass and volume at the same time. We explore three potential applications enabled by weight-changing devices: density simulation of different materials, miniature representation of planets with scaled size and mass, and motion control by changing gravity force. This technique opens up a new design space in human-computer interactions.