@article{ma_zikry_2009, title={Microstructural modeling of nanoidentational polycrsytalline gold with random high angle grain-boundaries}, volume={19}, number={1-2}, journal={Reviews on Advanced Materials Science}, author={Ma, J. B. and Zikry, M. A.}, year={2009}, pages={78–92} }
 @article{ma_zikry_2009, title={Nanoindentation and microstructural evolution of polycrystalline gold}, volume={24}, ISSN={["2044-5326"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-63149171212&partnerID=MN8TOARS}, DOI={10.1557/jmr.2009.0133}, abstractNote={A finite-element (FE) microstructurally based dislocation density multiple-slip crystalline formulation that is coupled to molecular dynamic (MD) simulations has been used to predict how nanoindentation affects behavior in crystalline gold polycrystals at scales that span the molecular to the continuum level. Displacement profiles from MD simulations of nanoindentation were used to obtain scaling relations, which are based on indented depths, grain sizes, and grain aggregate distributions. These scaling relations are then used in a microstructurally based FE formulation that accounts for dislocation density evolution, crystalline structures, and grain sizes. This hierarchical methodology can be used to ascertain inelastic effects, such as shear-slip distribution, pressure accumulation, and dislocation density and slip-rate evolution at physical scales that are commensurate with ductile behavior at the microstructural scale.}, number={3}, journal={JOURNAL OF MATERIALS RESEARCH}, author={Ma, Jeong Beom and Zikry, M. A.}, year={2009}, month={Mar}, pages={1093–1104} }
 @article{ma_zikry_ashamwi_brenner_2007, title={Hierarchical modeling of nanoindentation and microstructural evolution of face-centered cubic gold aggregates}, volume={22}, ISSN={["2044-5326"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33947268483&partnerID=MN8TOARS}, DOI={10.1557/JMR.2007.0076}, abstractNote={A hierarchical computational method has been developed and used with a finite-element microstructurally based dislocation density multiple-slip crystalline formulation to predict how nanoindentation affects behavior in face-centered cubic crystalline aggregates at scales that span the molecular to the continuum level. Displacement profiles from molecular dynamics simulations of nanoindentation were used to obtain scaling relations, which are based on indented depths, grain-sizes, and grain aggregate distributions. These scaling relations are then used to coarsen grains in a microstructurally based finite-element formulation that accounts for dislocation density evolution, crystalline structures, and grain-sizes. This computational approach was validated with a number of experimental measurements pertaining to single gold crystals. This hierarchical model provides a methodology to link molecular level simulations with a microstructurally based finite element method formulation that can be used to ascertain inelastic effects, such as shear-slip distribution, pressure accumulation, and dislocation density and slip-rate evolution at physical scales that are commensurate with ductile behavior at the microstructural scale.}, number={3}, journal={JOURNAL OF MATERIALS RESEARCH}, author={Ma, Jeong Beom and Zikry, M. A. and Ashamwi, W. M. and Brenner, D. W.}, year={2007}, month={Mar}, pages={627–643} }