Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"quasi-continuum"”.
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Multiscale models for structure and dynamics of confined fluids
… model is based on an empirical potential based quasi-continuum theory (EQT). EQT is a multiscale theory that seamlessly integrates the interatomic potentials describing various atomic interactions into a continuum framework to obtain the equilibrium density and potential profiles of confined …
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Computational analysis of thermodynamic and mechanical properties of nano-materials
… and bulk material properties based on the continuum assumption may not be directly applicable for nanoscale devices. Accurate and efficient computational models and systematic study of material properties at nanoscale are among the many challenges currently facing the nanotechnology …
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A multiscale theory to determine thermodynamic properties of confined fluids
Empirical potential-based quasi-continuum theory (EQT) provides a route to incorporate atomistic detail into a continuum framework such as the Nernst- Planck equation. EQT is a simple and fast approach to predict inhomogeneous density and potential profiles of confined fluids. EQT potentials can be …
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A multiscale framework for structure of confined water and electrolytes
… properties of the nanofluidic systems. Classical continuum theories fail to accurately describe such atomic level variations in the properties of nanoconfined fluids. Moreover, accurate modeling of molecular-level details of water is still a long-standing challenge for liquid state theories. In …
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Emergent properties of heterogeneous decomposition networks
… matter is often described as a heterogeneous continuum which transforms and degrades over a wide range of rates, I model degradation as a network consisting of a large, quasi-continuum of states. The retention of carbon in the network is then estimated by using an eigenvalue projection to …
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Bridging the gap between atomistic and continuum models to predict dielectric and thermodynamic properties of confined fluids
… expensive. On the other hand, classical continuum theories fails to accurately describe the fluid properties at atomic level. Thus, there is a need for a multiscale frame work to maintain the balance between accuracy and rigor of atomistic simulations and efficiency of continuum …
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A numerical and experimental investigation of the effects of thermal history on the structure/property relationship of PPS/carbon fiber composites
… process have treated the composite material as a continuum and thereby used mass averaged physical properties (such as thermal conductivity, density, and specific heat), we use a quasi-continuum approach in which locally we consider the properties of the matrix and fiber separately. Once a …
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Constitutive modeling of Cu-Al-Ni shape memory alloys
… undergoing phase transformations. The classical continuum theory describes the bulk regions (regions away from the interfaces) in a satisfactory manner but leaves a gap in the information concerning the interface. This lacuna has been filled by either including nucleation and kinetic criteria …
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Generating and protecting high fidelity multi-particle entangled states with atom-photon interactions
… a discrete state coupled to a finite bandwidth quasicontinuum, in the intermediate regime, where the bandwidth of the quasicontinuum cannot be treated as infinite or zero. This problem has many applications, including understanding how to generate an excited Rydberg superatom W state by driving …