Multiple length scales Rudd and Broughton, phys. stat. sol. (b) 217, 251 (2000). Molecular dynamics coupled with finite element methods Course grained.

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Presentation transcript:

Multiple length scales Rudd and Broughton, phys. stat. sol. (b) 217, 251 (2000). Molecular dynamics coupled with finite element methods Course grained molecular dynamics

MEMS MicroElectroMechanical Systems Rudd and Broughton, phys. stat. sol. (b) 217, 251 (2000).

Hamiltonian for multiple length scales Rudd and Broughton, phys. stat. sol. (b) 217, 251 (2000).

MD Rudd and Broughton, phys. stat. sol. (b) 217, 251 (2000).

Tight-binding

Finite element

Finite element (cont.)

Finest mesh for diamond

Finite Element/MD handshaking

Course Grained Molecular Dynamics MD on mesh Each mesh point represents 1 or more atoms Node are displaced by dynamics of average forces and masses