/usr/share/octave/packages/secs2d-0.0.8/Utilities/Udriftdepmob.m is in octave-secs2d 0.0.8-5.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | function mob = Udriftdepmob(imesh,u0,F,V,vsat,b)
% mob = Ufielddepmob(imesh,u0,F,vsat,b)
% Computes field dependent mobility
% This file is part of
%
% SECS2D - A 2-D Drift--Diffusion Semiconductor Device Simulator
% -------------------------------------------------------------------
% Copyright (C) 2004-2006 Carlo de Falco
%
%
%
% SECS2D is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2 of the License, or
% (at your option) any later version.
%
% SECS2D is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with SECS2D; If not, see <http://www.gnu.org/licenses/>.
[Ex,Ey]= Updegrad(imesh,-V);
[Fx,Fy]= Updegrad(imesh,F);
fnmod = sqrt(Fx.^2+Fy.^2);
ef = abs(Fx.*Ex+Fy.*Ey)./fnmod;
if Ucolumns(ef)>Urows(ef)
ef=ef';
end
mob = u0 ./ (1+(u0 .* ef ./ vsat).^b).^(1/b);
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