Numerical investigation of local defectiveness control of diblock copolymer patterns
We numerically investigate local defectiveness control of self-assembled diblock copolymer patterns through appropriate substrate design. We use a nonlocal Cahn-Hilliard (CH) equation for the phase separation dynamics of diblock copolymers. We discretize the nonlocal CH equation by an unconditiona...
Збережено в:
| Дата: | 2016 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2016
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/154227 |
| Теги: |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Numerical investigation of local defectiveness control of diblock copolymer patterns / D. Jeong, Y. Choi, J. Kim// Condensed Matter Physics. — 2016. — Т. 19, № 3. — С. 33001: 1–10. — Бібліогр.: 35 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | We numerically investigate local defectiveness control of self-assembled diblock copolymer patterns through
appropriate substrate design. We use a nonlocal Cahn-Hilliard (CH) equation for the phase separation dynamics
of diblock copolymers. We discretize the nonlocal CH equation by an unconditionally stable finite difference
scheme on a tapered trench design and, in particular, we use Dirichlet, Neumann, and periodic boundary conditions. The value at the Dirichlet boundary comes from an energy-minimizing equilibrium lamellar profile. We
solve the resulting discrete equations using a Gauss-Seidel iterative method. We perform various numerical experiments such as effects of channel width, channel length, and angle on the phase separation dynamics. The
simulation results are consistent with the previous experimental observations. |
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