Patterning by controlled cracking

  title={Patterning by controlled cracking},
  author={Koo Hyun Nam and Il Han Park and Seung Hwan Ko},
Crack formation drives material failure and is often regarded as a process to be avoided. However, closer examination of cracking phenomena has revealed exquisitely intricate patterns such as spirals, oscillating and branched fracture paths and fractal geometries. Here we demonstrate the controlled initiation, propagation and termination of a variety of channelled crack patterns in a film/substrate system comprising a silicon nitride thin film deposited on a silicon substrate using low-pressure… CONTINUE READING
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