کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1785780 1023394 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Energy-minimizing wavelengths of equilibrium states for diblock copolymers in the hex-cylinder phase
ترجمه فارسی عنوان
طول موج های به حداقل رساندن انرژی از حالت های تعادلی برای کوپلیمرهای دیوکسل در فاز شش سیلندر
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی


• Spectral method for calculating energy-minimizing wavelengths of steady states.
• Practically unconditional stable numerical scheme for the model equation.
• Energy-minimizing wavelengths for the hex-cylinder phase.

We investigate the energy-minimizing wavelengths of equilibrium states for diblock copolymers in the hex-cylinder phase. The mathematical model is the Cahn–Hilliard equation with long-range interactions. The numerical scheme is based on a linearly gradient stable method and the resulting discrete system of equations is solved by a Fourier-spectral method. We solve the equations in non-square domains because the periodic unit is not a square. We choose the computational domains as rectangles of aspect ratio 3 (height/width). We run the computation until the system reaches a numerical equilibrium state. We repeat these calculations in domains of gradually increasing size and then find the wavelength that minimizes the domain-size-scaled total energy. We investigate the effect of the parameters on the energy-minimizing wavelength. We also propose a formula for a non-square domain that is close to a square domain and has an exact periodicity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 15, Issue 7, July 2015, Pages 799–804
نویسندگان
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