请问MS里，对周期性固体施加电场，如何修改input文件

hopedream

我看说明书，讲解如下：

[size=14.6667px]Surface:

field 1.5 z

[size=14.6667px]Polymer:

field 1.5 y

[size=14.6667px]Molecule:

field 1.5 x

[size=14.6667px]or:

field 1.5  0.2 0.3 0.4

[size=14.6667px]If the direction is not specified then the default is to apply the field along the z axis.

[size=14.6667px]The possibility of applying an electric field in 3D boundary conditions is also allowed for, in which case the field direction can be set using a cell vector (a, b, or c) as well as by a fractional or Cartesian vector:

field 1.5 bfield 1.5 0.2 0.3 0.4field 1.5 cart 0.2 0.3 0.4然而，我试了不同地方填写，把b换成y(这里指施加的方向)。都不好使。