Surface Science and Solid State Theory Laboratory

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Archive for the ‘研究関連’


jmolテスト コメントは受け付けていません。

Posted on 12月 24, 2009 by kimi
In/Si(111)4x1-8x2

The OpenScience projectのサイトを参考にjmolアプレットを仕込んでみた。サンプルはSb吸着Si(111)表面の4×1構造と8×2構造の間の原子位置の変遷をアニメーションにしたもの。ただし、現実には、こんな風に動くことは絶対にありません。リアルなアニメーションはどこかの研究会でお見せできるでしょう。マウスでグリグリ動かしたり、拡大したり、アニメーションしたりできる。是非、いろいろ遊んでみて。（ヒント：マウスの右ボタンとホイール） Read the rest of this entry →

Category Tips and Chips, 日々のできごごろ, 研究関連

From NetCDF to CUBE (1) コメントは受け付けていません。

Posted on 11月 10, 2009 by kimi

Total density of states;

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#!/usr/bin/env python
import string
from math import log10
from optparse import OptionParser

from Dacapo import Dacapo
from ASE.IO.Cube import WriteCube

cmd = OptionParser(usage = '%prog input_nc_file output_cube_file')

(opt, argv) = cmd.parse_args()

if len(argv) != 2:
  cmd.print_help()
  raise SystemExit

ncfile = argv[0]
cubefile = argv[1]
basename = string.split(cubefile, '.cube')

model = Dacapo.ReadAtoms(ncfile)
calculator = model.GetCalculator()

if not calculator.GetSpinPolarized():
  filename_total= basename[0] + '.cube'
else:
  filename_total= basename[0] + '_total.cube'
  filename_diff= basename[0] + '_diff.cube'
  filename_spin0= basename[0] + '_spin0.cube'
  filename_spin1= basename[0] + '_spin1.cube'
  density0 = calculator.GetDensityArray(spin = 0)
  density1 = calculator.GetDensityArray(spin = 1)
  WriteCube(model, density0, filename_spin0)
  WriteCube(model, density1, filename_spin1)
  diff = density1 - density0
  WriteCube(model, diff, filename_diff)

density = calculator.GetDensityArray()
WriteCube(model, density, filename_total)

Category Dacapo ASE, 研究関連

From NetCDF to DOS コメントは受け付けていません。

Posted on 11月 10, 2009 by kimi
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#!/usr/bin/env python
from optparse import OptionParser
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from Dacapo import Dacapo
from ASE.Utilities.DOS import DOS
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cmd = OptionParser(usage = '%prog [-r] input_nc_file output_text_file')
cmd.add_option('-r', '--reverse', action = "store_true", default = False,
help = 'reverse out put for minor spin states')
(opt, argv) = cmd.parse_args()

if len(argv) != 2:
  cmd.print_help()
  raise SystemExit

  ncfile = argv[0]
  textfile = argv[1]
  sfmt0 = '%-15s %-15s\n'
  sfmt1 = '%-15s %-15s %-15s %-15s\n'
  efmt0 = '%15.7E %15.7E\n'
  efmt1 = '%15.7E %15.7E %15.7E %15.7E\n'
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  atoms = Dacapo.ReadAtoms(ncfile)
  calc = atoms.GetCalculator()
  isSpinPolarized = calc.GetSpinPolarized()
  dos = DOS(calc)
  x0 = dos.GetEnergies()
  if isSpinPolarized:
    y0 = dos.GetDOS(0)
    y1 = dos.GetDOS(1)
    fp = open(textfile, 'w')
    if opt.reverse:
      fp.write(sfmt1 % ('Energy', 'DOS0', 'DOS1', 'DIFF'))
    else:
      fp.write(sfmt1 % ('Energy', 'DOS0', 'DOS1', 'TOTAL'))
      for i in range(len(x0)):
        if opt.reverse:
          fp.write(efmt1 % (x0[i], y0[i], -y1[i], y0[i] - y1[i]))
        else:
          fp.write(efmt1 % (x0[i], y0[i],  y1[i], y0[i] + y1[i]))
      fp.close()
  else:
    y0 = dos.GetDOS(0)
    fp = open(textfile, 'w')
    fp.write(sfmt0 % ('Energy', 'DOS'))
    for i in range(len(x0)):
      fp.write(efmt0 % (x0[i], y0[i]))
    fp.close()

Category Dacapo ASE, 研究関連

From NetCDF to XYZ コメントは受け付けていません。

Posted on 11月 09, 2009 by kimi
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#!/usr/bin/env python
import os
import tempfile
from optparse import OptionParser
 
from Dacapo import Dacapo
from ASE.Trajectories.NetCDFTrajectory import NetCDFTrajectory
from ASE.IO.xyz import WriteXYZ
 
cmd = OptionParser(usage = '%prog [-r R1 R2 R3] input_nc_file output_xyz_file')
cmd.add_option('-r', '--repeat', type = 'int', nargs = 3,
               help = 'Repeat R1, R2, R3 times along the three axes',
               metavar = 'R1 R2 R3')
 
(opt, argv) = cmd.parse_args()
 
if len(argv) != 2:
    cmd.print_help()
    raise SystemExit
 
ncfile = argv[0]
xyzfile = argv[1]
 
try:
  model = Dacapo.ReadAtoms(ncfile, index = 1)
  trajectory = True
except IndexError:
  trajectory = False
 
if not trajectory:
  model = Dacapo.ReadAtoms(ncfile)
  WriteXYZ(xyzfile, atoms = model, repeat = opt.repeat, id = ncfile)
else:
  model = Dacapo.ReadAtoms(ncfile, index = 0)
  model.SetCalculator(None)
  tmpfile = tempfile.mktemp()
  xyzpath = NetCDFTrajectory(tmpfile, model)
  xyzpath.Update()
 
  frame = 0
  error = False
  while not error:
    frame += 1
    try:
        atoms = Dacapo.ReadAtoms(ncfile, index = frame)
        model.SetCartesianPositions(atoms.GetCartesianPositions())
        xyzpath.Update()
    except IndexError:
        error = True
 
  xyzpath.Close()    
  xyzpath = NetCDFTrajectory(tmpfile)
  WriteXYZ(xyzfile, trajectory = xyzpath, repeat = opt.repeat, id = ncfile)
  os.remove(tmpfile)

Category Dacapo ASE, 研究関連



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