a*****e
发帖数: 4577 | 1 现在由于老板的要求，要转到计算电磁场方向
具体的就是要计算一些nm-um尺度的二维材料的有效介电常数
现在自己也不懂，组里也没人懂
除了本科学的一点电动力学之外完全不了解其他相关的东西了
因为计算电磁场方向似乎很杂（很多是电子系的人在做）
不知道我这个方向具体应该看些什么类型的书籍或者综述
麻烦各位给推荐几本书或相关文献
谢谢先 | x*******n
发帖数: 185 | 2 again, read this book http://ab-initio.mit.edu/book/
you do not need to invent your own wheel. However, this code does not
include imagninary part of the dielectric functions. Depending on what
frequency range and what material you are considering, you need to do
different treatments. Say, for insulator and semiconductor, for frequency
below the band gap, the imag part is small, so you can use perturbation.
However, for metal or frequency above the band gap, you cannot use
perturbation. Anyway, | m*******r
发帖数: 98 | 3 The current version of MPB supports complex epsilon tensor
The current version of MEEP does support complex epsilon scalar
The future version will incorporate complex epsilon and mu tensor
learn
【在 x*******n 的大作中提到】
: again, read this book http://ab-initio.mit.edu/book/
: you do not need to invent your own wheel. However, this code does not
: include imagninary part of the dielectric functions. Depending on what
: frequency range and what material you are considering, you need to do
: different treatments. Say, for insulator and semiconductor, for frequency
: below the band gap, the imag part is small, so you can use perturbation.
: However, for metal or frequency above the band gap, you cannot use
: perturbation. Anyway,
| m*******r
发帖数: 98 | 4 Another computationa method for metamaterial is FEFD, finite-element-
frequency-domain. Maybe you can try COMSOL
【在 a*****e 的大作中提到】
: 现在由于老板的要求，要转到计算电磁场方向
: 具体的就是要计算一些nm-um尺度的二维材料的有效介电常数
: 现在自己也不懂，组里也没人懂
: 除了本科学的一点电动力学之外完全不了解其他相关的东西了
: 因为计算电磁场方向似乎很杂（很多是电子系的人在做）
: 不知道我这个方向具体应该看些什么类型的书籍或者综述
: 麻烦各位给推荐几本书或相关文献
: 谢谢先
| a*****e
发帖数: 4577 | 5 正在看楼上推荐的那本书
多谢各位建议
现在有几点难处在于
1.计算的体系是loss material，半导体或者金属
2.计算的体系是3维的柱状阵列
3.要考虑不同频谱的情况，包括可见光和红外
不知道什么软件比较合适？
如果自己写code的话，大家觉得工作量大概多大？（一千行？）
如果仅仅是解eigenvalue problem不知道能否解决问题，还是需要用FEFD，或FDTD?
【在 m*******r 的大作中提到】
: Another computationa method for metamaterial is FEFD, finite-element-
: frequency-domain. Maybe you can try COMSOL
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