TY  - JOUR
A1  - Ion, Alexandra
A1  - Lindlbauer, David
A1  - Herholz, Philipp
A1  - Alexa, Marc
A1  - Baudisch, Patrick Markus
T1  - Understanding Metamaterial Mechanisms
JF  - Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems
N2  - In this paper, we establish the underlying foundations of mechanisms that are composed of cell structures-known as metamaterial mechanisms. Such metamaterial mechanisms were previously shown to implement complete mechanisms in the cell structure of a 3D printed material, without the need for assembly. However, their design is highly challenging. A mechanism consists of many cells that are interconnected and impose constraints on each other. This leads to unobvious and non-linear behavior of the mechanism, which impedes user design. In this work, we investigate the underlying topological constraints of such cell structures and their influence on the resulting mechanism. Based on these findings, we contribute a computational design tool that automatically creates a metamaterial mechanism from user-defined motion paths. This tool is only feasible because our novel abstract representation of the global constraints highly reduces the search space of possible cell arrangements.
KW  - Metamaterials
KW  - fabrication
KW  - computational design
Y1  - 2019
SN  - 978-1-4503-5970-2
U6  - https://doi.org/10.1145/3290605.3300877
PB  - Association for Computing Machinery
CY  - New York
ER  - 
TY  - GEN
A1  - Ion, Alexandra
A1  - Baudisch, Patrick Markus
T1  - Metamaterial Devices
N2  - In our hands-on demonstration, we show several objects, the functionality of which is defined by the objects' internal micro-structure. Such metamaterial machines can (1) be mechanisms based on their microstructures, (2) employ simple mechanical computation, or (3) change their outside to interact with their environment. They are 3D printed from one piece and we support their creating by providing interactive software tools.
KW  - Metamaterials
KW  - microstructures
KW  - fabrication
KW  - programmable matter
Y1  - 2018
SN  - 978-1-4503-5819-4
U6  - https://doi.org/10.1145/3214822.3214827
PB  - Association for Computing Machinery
CY  - New York
ER  - 
TY  - JOUR
A1  - Baudisch, Patrick Markus
A1  - Silber, Arthur
A1  - Kommana, Yannis
A1  - Gruner, Milan
A1  - Wall, Ludwig
A1  - Reuss, Kevin
A1  - Heilman, Lukas
A1  - Kovacs, Robert
A1  - Rechlitz, Daniel
A1  - Roumen, Thijs
T1  - Kyub
BT  - A 3D Editor for Modeling Sturdy Laser-Cut Objects
JF  - Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems
N2  - We present an interactive editing system for laser cutting called kyub. Kyub allows users to create models efficiently in 3D, which it then unfolds into the 2D plates laser cutters expect. Unlike earlier systems, such as FlatFitFab, kyub affords construction based on closed box structures, which allows users to turn very thin material, such as 4mm plywood, into objects capable of withstanding large forces, such as chairs users can actually sit on. To afford such sturdy construction, every kyub project begins with a simple finger-joint "boxel"-a structure we found to be capable of withstanding over 500kg of load. Users then extend their model by attaching additional boxels. Boxels merge automatically, resulting in larger, yet equally strong structures. While the concept of stacking boxels allows kyub to offer the strong affordance and ease of use of a voxel-based editor, boxels are not confined to a grid and readily combine with kuyb's various geometry deformation tools. In our technical evaluation, objects built with kyub withstood hundreds of kilograms of loads. In our user study, non-engineers rated the learnability of kyub 6.1/7.
KW  - Personal fabrication
KW  - laser cutting
KW  - interactive editing
Y1  - 2019
SN  - 978-1-4503-5970-2
U6  - https://doi.org/10.1145/3290605.3300796
SP  - 1
EP  - 12
PB  - Association for Computing Machinery
CY  - New York
ER  -