Zobrazeno 1 - 10 of 16 pro vyhledávání: '"Tatsuhiro Iwama"'
2
Marangoni Flows during Nonsolvent Induced Phase Separation
Autor: Joshua Lee, Tatsuhiro Iwama, Glenn H. Fredrickson, Kris T. Delaney, Douglas R. Tree
Publikováno v: ACS macro letters. 7(5)
Motivated by the much discussed, yet unexplained, presence of macrovoids in polymer membranes, we explore the impact of Marangoni flows in the process of nonsolvent induced phase separation. Such flows have been hypothesized to be important to the fo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e08502ce1abfbf37a43b96783b4b9199
https://pubmed.ncbi.nlm.nih.gov/35632935
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3
Mechanisms of Asymmetric Membrane Formation in Nonsolvent-Induced Phase Separation
Autor: Tatsuhiro Iwama, Douglas R. Tree, Eva Y. Chan, Glenn H. Fredrickson, Kris T. Delaney, Jan Ulric Garcia
Publikováno v: ACS macro letters. 9(11)
We report the first simulations of nonsolvent-induced phase separation (NIPS) that predict membrane microstructures with graded asymmetric pore size distribution. In NIPS, a polymer solution film is immersed in a nonsolvent bath, enriching the film i
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5716bd06c395473d8466f0d907b8d163
https://pubmed.ncbi.nlm.nih.gov/35617063
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4
Computational Study of Directed Self-Assembly in Neutral Prepatterns for a Graphoepitaxial Pitch-Multiplication Application
Autor: Glenn H. Fredrickson, Tatsuhiro Iwama, Michael Carilli, Kris T. Delaney, Nabil Laachi, Bongkeun Kim
Publikováno v: Macromolecules. 48:1256-1261
We use self-consistent field theory to investigate the directed self-assembly of cylinder-forming block copolymers for the purpose of a graphoepitaxial pitch multiplication. We focus in particular on conditions where two minor-block cylinders form in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b451a9de5afb085d90194f9e80521253
https://doi.org/10.1021/ma502276k
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6
A multi-fluid model for microstructure formation in polymer membranes
Autor: Glenn H. Fredrickson, Hector D. Ceniceros, Douglas R. Tree, Tatsuhiro Iwama, Kris T. Delaney
Publikováno v: Soft matter. 13(16)
We develop a multi-fluid model for a ternary polymer solution using the Rayleighian formalism of Doi and Onuki, and give an efficient pseudo-spectral method for solving both the diffusion and momentum equations that result. Subsequently, we find that
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13c5c73f956216ea326f61e787be0c67
https://pubmed.ncbi.nlm.nih.gov/28367562
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