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Research

Materials Computation Center, University of Illinois Duane Johnson and Richard Martin, NSF DMR-9976550 Multiscale Analysis of NEMS from co-PI: Narayan Aluru. Research

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Research

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  1. Materials Computation Center, University of Illinois Duane Johnson and Richard Martin, NSF DMR-9976550Multiscale Analysis of NEMSfrom co-PI: Narayan Aluru • Research • Our goal is to develop efficient multiscale simulations tools for analysis of silicon-based nanoelectromechanical systems (NEMS). Accomplishments to date include: • developed nonlinear continuum theories • developed Dirichlet-Dirichlet and Dirichlet-Neumann based multiscale analysis Plans for next 6–12 months are to develop efficient semi-classical and quantum-mechanical solvers to compute electrostatic forces on NEM devices. (Collaboration with J.-P. Leburton.) Continuum theories for NEMS: Comparison of linear and nonlinear continuum theories with molecular dynamics simulations for a fixed-fixed NEM switch with an initial gap of 5 nm. The beam is 21.72 nm long, 1.63 nm wide and 1.63 nm thick. Nonlinear continuum theories match well with molecular dynamics, while linear theories fail to predict the pull-in behavior of the switch.

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