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Geometric Control of Fracture and Topological Metamaterials

Geometric Control of Fracture and Topological Metamaterials

Noah Mitchell

 

Verlag Springer-Verlag, 2020

ISBN 9783030363611 , 129 Seiten

Format PDF, OL

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Geometric Control of Fracture and Topological Metamaterials


 

This thesis reports a rare combination of experiment and theory on the role of geometry in materials science. It is built on two significant findings: that curvature can be used to guide crack paths in a predictive way, and that protected topological order can exist in amorphous materials. In each, the underlying geometry controls the elastic behavior of quasi-2D materials, enabling the control of crack propagation in elastic sheets and the control of unidirectional waves traveling at the boundary of metamaterials. The thesis examines the consequences of this geometric control in a range of materials spanning many orders of magnitude in length scale, from amorphous macroscopic networks and elastic continua to nanoscale lattices.


Noah Mitchell is a postdoctoral fellow at the Kavli Institute for Theoretical Physics at the University of California, Santa Barbara. He received his PhD from the University of Chicago in 2018.