TY  - JOUR
PY  - 2016//
TI  - Controlling strain bursts and avalanches at the nano- to micrometer scale
JO  - Physical review letters
A1  - Cui, Yinan
A1  - Po, Giacomo
A1  - Ghoniem, Nasr
SP  - e155502
EP  - e155502
VL  - 117
IS  - 15
N2  - We demonstrate, through three-dimensional discrete dislocation dynamics simulations, that the complex dynamical response of nano- and microcrystals to external constraints can be tuned. Under load rate control, strain bursts are shown to exhibit scale-free avalanche statistics, similar to critical phenomena in many physical systems. For the other extreme of displacement rate control, strain burst response transitions to quasiperiodic oscillations, similar to stick-slip earthquakes. External load mode control is shown to enable a qualitative transition in the complex collective dynamics of dislocations from self-organized criticality to quasiperiodic oscillations.<p />  <p>Language: en</p>
LA  - en
SN  - 0031-9007
UR  - http://dx.doi.org/10.1103/PhysRevLett.117.155502
ID  - ref1
ER  -