The ELECTRODE line

Syntax

  ELEctrode number position adjustment

Description

The ELECTRODE line specifies the location of electrodes or allows for adjustment of previously defined electrodes.

Parameters

number

  Number  =  integer

NUMBER is the id number of the electrode to be added or modified. There may be up to ten electrodes, numbered 1,2,3,...,9,0. They may be assigned in any order, but if there are N electrodes, none can have an electrode number above N. There may be multiple definitions for a single electrode number.

location

  IX.Low   =  integer
  IX.High  =  integer
  IY.Low   =  integer
  IY.High  =  integer
  Z.MIn    =  real    (default is min(z) in device)
  Z.MAx    =  real    (default is max(z) in device)
  Region   =  integer
           or                                                 
  X.MIn    =  real
  X.MAx    =  real
  Y.MIn    =  real
  Y.MAx    =  real
  Z.MIn    =  real    (default is min(z) in device)
  Z.MAx    =  real    (default is max(z) in device)
  Region   =  integer

Electrode extents may be defined in the xy-plane by rectangular indicies or by spatial coordinates. Nodes having x and y indices between IX.LOW and IX.HIGH and between IY.LOW and IY.HIGH respectively or x and y coordinates between X.MIN and X.MAX and between Y.MIN and Y.MAX respectively are designated electrode nodes. In the z-dimension, electrode extents can only be defined by coordinates, Z.MIN and Z.MAX. REGION specifies that this electrode only be applied within the specified region number; the default is every region in the device.

adjustments

  Clear or INItial  =  logical  (default is false)
  INClude           =  integer
  Dump or Print     =  integer  (default is specified by NUMBER)

CLEAR (or INITIAL) reinitializes (eliminates) currently defined electrodes; if no electrode number is given, the entire electrode data base is initialized. INCLUDE is the number of a second electrode which is to be incorporated into that specified by NUMBER. DUMP (or PRINT) indicates how terminal values associated with the electrode modified by the INCLUDE are to be printed. If DUMP is the same as INCLUDE, the terminal characteristics for those electrode nodes are printed separately even though they now belong to that specified by NUMBER. This option serves to short to electrodes together and is very useful when used with current or continuation boundary conditions.

Examples

Define a typical back-side contact.

  ELEC   N=1 IX.LOW=1 IX.HIGH=40 IY.LOW=17 IY.HIGH=17

Incorporate all electrode 2 nodes into electrode 3, but print all information separately.

  ELEC   NUM=3 INCLUDE=2 DUMP=2