导体通常指电阻率  < 10-4  · cm 的物质。金属和合金一般都是导体，如铝、金、钨、铜、镍铬 等。能带能隙很小或为 0 , 在室温下电子很容易获得能量而跃迁至导带而导电。-Usually refers to a conductor resistivity  < 10-4  cm material. Metals and alloys are generally conductors such as aluminum,

钪(Sc)、钇(Y)和镧系金属中镧(La)、铈(Ce)、镨(Pr)、钕(Nd)、钜(Pm)、钐(Sm)、铕(Eu)、钆(Gd)、铽(Tb)、镝(Dy)、钬(Ho)、铒(Er)、铥(Tm)、镱(Yb)、镥(Lu)17个金属的统称。-Scandium (Sc), yttrium (Y), and lanthanide metals Lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), DR (Pm), samarium (Sm

介绍如何在三维时域有限差分法meep开源软件中设置金属的介电常数-how to deal with metals in Meep

Materials can be categorized into conductors , semiconductors or insulators by their ability to conduct electricity. It is a popular belief that insulators do not conduct electricity because their valence electrons are not free to wander throughout t