Crynodeb
Energy dissipation by fast crystalline defects takes place mainly through the resonant interaction of their cores with periodic lattice. We show that the resultant effective friction can be reduced to zero by appropriately tuned acoustic sources located on the boundary of the body. To illustrate the general idea, we consider three prototypical models describing the main types of strongly discrete defects: dislocations, cracks, and domain walls. The obtained control protocols, ensuring dissipation-free mobility of topological defects, can also be used in the design of metamaterial systems aimed at transmitting mechanical information.
Iaith wreiddiol | Saesneg |
---|---|
Rhif yr erthygl | 195502 |
Cyfnodolyn | Physical Review Letters |
Cyfrol | 125 |
Rhif cyhoeddi | 19 |
Dynodwyr Gwrthrych Digidol (DOIs) | |
Statws | Cyhoeddwyd - 02 Tach 2020 |
Ôl bys
Gweld gwybodaeth am bynciau ymchwil 'Frictionless Motion of Lattice Defects'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.Proffiliau
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Gennady Mishuris
- Adran Mathemateg - Professor of Mathematical Modelling, Royal Society Wolfson Research Merit Award Holder
Unigolyn: Dysgu ac Ymchwil, Arall