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Optimal design and operation of a spatially distributed multiscale process, with regard to layered heterostructure growth / Christopher M. Behrens in Industrial & engineering chemistry research, Vol. 49 N° 17 (Septembre 1, 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 17 (Septembre 1, 2010) . - pp 7891–7900 Titre : Optimal design and operation of a spatially distributed multiscale process, with regard to layered heterostructure growth Type de document : texte imprimé Auteurs : Christopher M. Behrens, Auteur ; Antonios Armaou, Auteur Année de publication : 2010 Article en page(s) : pp 7891–7900 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Optimal  design  Multiscale  process  Heterostructure. Résumé : Determining the optimal operation of processes modeled by multiscale systems presents many challenges, because of complexities in modeling and the extensive computational requirements needed to solve them. Application to layered heterostructure deposition is considered here, where an additional challenge of interface characterization is encountered. A solution methodology is applied to the fabrication of a device consisting of alternating layers of gallium arsenide and aluminum arsenide, with the intent of minimizing thickness nonuniformity and interfacial step density. Using a finite-element solver and kinetic Monte Carlo simulations, we were able to balance reductions in thickness nonuniformity and interfacial step density with maintaining favorable operating conditions in a computationally efficient manner. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9020107 [article] Optimal design and operation of a spatially distributed multiscale process, with regard to layered heterostructure growth [texte imprimé] / Christopher M. Behrens, Auteur ; Antonios Armaou, Auteur . - 2010 . - pp 7891–7900. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 17 (Septembre 1, 2010) . - pp 7891–7900 Mots-clés : Optimal  design  Multiscale  process  Heterostructure. Résumé : Determining the optimal operation of processes modeled by multiscale systems presents many challenges, because of complexities in modeling and the extensive computational requirements needed to solve them. Application to layered heterostructure deposition is considered here, where an additional challenge of interface characterization is encountered. A solution methodology is applied to the fabrication of a device consisting of alternating layers of gallium arsenide and aluminum arsenide, with the intent of minimizing thickness nonuniformity and interfacial step density. Using a finite-element solver and kinetic Monte Carlo simulations, we were able to balance reductions in thickness nonuniformity and interfacial step density with maintaining favorable operating conditions in a computationally efficient manner. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9020107