@inproceedings{2001497,
author={Mark Marshall and  Thomas Carter and  Jason Alexander and Sriram Subramanian},
title={Ultra-Tangibles: Creating Movable Tangible Objects on Interactive Tables},
booktitle={Proceedings of the 30th International Conference on Human Factors in Computing Systems (CHI 2012)},
publisher={ACM},
month={May},
year={2012},
abstract={Tangible objects placed on interactive surfaces allow users to employ a physical object to manipulate digital content. However, creating the reverse effect—having digital content manipulate a tangible object placed on the surface—is a more challenging task. We present a new approach to this problem, using ultrasound-based air pressure waves to move multiple tangible objects, independently, around an interactive surface. We describe the technical background, design, implementation, and test cases for such a system. We conclude by discussing practical uses of our system, Ultra-Tangibles, in the creation of new tangible user interfaces.},
abstract-url={http://www.cs.bris.ac.uk/Publications/pub_master.jsp?id=2001497},
url={http://www.cs.bris.ac.uk/Publications/Papers/2001497.pdf},
keyword={},
pubtype={102}
}