TY - GEN
T1 - Numerical simulation of polymer phase separation on a patterned substrate with nano features
AU - Shang, Yingrui
AU - Kazmer, David
AU - Wei, Ming
AU - Mead, Joey
AU - Barry, Carol
PY - 2008
Y1 - 2008
N2 - Phase separation of an asymmetric immiscible binary polymer system in an elastic field with the existence of a patterned substrate was numerically studied in 2D and 3D. An unconditionally stable method for time marching the Cahn-Hilliard equation was employed in the numerical simulation. Compared to the conventional interface tracing mechanism, this diffusion controlled system is characterized by a thick interface with a composition gradient. The evolution mechanisms were studied. The evolution of the characteristic length, R(t), of the phase separation morphology patterns was measured with the Fast Fourier Transform method. The results indicated R(t)1/3 increases linearly with time. The influence of the material composition, the attraction factor on the template, and the gradient energy coefficient between the two polymers on the result patterns were also observed in this study. Qualitative and quantitative correspondence can be observed between the numerical results and the experiment results.
AB - Phase separation of an asymmetric immiscible binary polymer system in an elastic field with the existence of a patterned substrate was numerically studied in 2D and 3D. An unconditionally stable method for time marching the Cahn-Hilliard equation was employed in the numerical simulation. Compared to the conventional interface tracing mechanism, this diffusion controlled system is characterized by a thick interface with a composition gradient. The evolution mechanisms were studied. The evolution of the characteristic length, R(t), of the phase separation morphology patterns was measured with the Fast Fourier Transform method. The results indicated R(t)1/3 increases linearly with time. The influence of the material composition, the attraction factor on the template, and the gradient energy coefficient between the two polymers on the result patterns were also observed in this study. Qualitative and quantitative correspondence can be observed between the numerical results and the experiment results.
KW - Discrete cosine transform
KW - Numerical simulation
KW - Patterned substrate
KW - Spinodal decomposition
UR - http://www.scopus.com/inward/record.url?scp=52649089615&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:52649089615
SN - 9781420085075
SN - 9781420085051
T3 - Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008
SP - 662
EP - 665
BT - Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008
T2 - 2008 NSTI Nanotechnology Conference and Trade Show, NSTI Nanotech 2008 Joint Meeting, Nanotechnology 2008
Y2 - 1 June 2008 through 5 June 2008
ER -