Wikimore

Description

The quantum wavefunction of a particle in a 2D infinite potential well of dimensions L_x and L_y. The wavenumbers are:

n_x=2
n_y=2

The wavefunction, shown as z on the plot, is given by:

\psi _{n_{x},n_{y}}=\psi _{0}\sin \left({\frac {n_{x}\pi x}{L}}\right)\sin \left({\frac {n_{y}\pi x}{L}}\right)

Date

13 February 2007

Source

Own drawing, plotted in MuPad.

Author

Inductiveload

Permission
(Reusing this file)

I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Category:Self-published work#2D%20Wavefunction%20(2,2)%20Surface%20Plot.png Category:PD-self#2D%20Wavefunction%20(2,2)%20Surface%20Plot.png

Other versions

See 2D Quantum Wavefunctions for more plots.

Mathematica Code

This code does not require any packages to be loaded.

nx = 3
ny = 2
Plot3D[
  Sin[nx Pi x]Sin[ny Pi y],
  {x, 0, 1}, 
  {y, 0, 1},
  ImageSize -> '''250''',
  BoxRatios -> {2, 2, 2},
  AxesLabel -> {x/Subscript[2L, x], y/Subscript[L, y], Subscript[ψ, "1,1"]},
  PlotRange -> {-1, 1},
  TextStyle -> {FontSize -> 96}
  ]

MuPAD Code


nx := 2:
ny := 2: 
f := sin(nx*x*PI) * sin(ny*y*PI):

  conts := 16:
  projectionlevel:=-1.5:

colourfunc := zip(RGB::Red, RGB::Yellow,
                  (a, b) -> (f(x,y)+1)/(2)*a
                           -(f(x,y)-1)/(2)*b):

funcplot := plot::Function3d(f(x,y),
                             x = 0..1,
                             y = 0..1,
                             Mesh = [24, 24],
                             Submesh=[8,8],
                             LineColor = RGB::Black.[0.99],
                             LineWidth = 0.15，
                             FillColorFunction = colourfunc,                             
                             AxesTitleFont = ["BKM-cmr17", 20],
                             TicksLabelFont = ["Courier New", 12],                         
                             ViewingBoxZRange = -1.5..1
                            ):

contours := plot::modify(funcplot,
                         ZContours = [Automatic, conts],
                         LineWidth = 0.15,
                         LineColor = RGB::Gray90.[0.5],
                         XLinesVisible = FALSE,
                         YLinesVisible = FALSE,
                         Filled = FALSE
                        ):
                        
projcontours := plot::Transform3d([0, 0, projectionlevel],
                                  [1, 0, 0, 0, 1, 0, 0, 0, 0], 
                                   plot::modify(funcplot, ZContours = [Automatic, conts],
                                                LineWidth = 0.2,
                                                LineColorType = Dichromatic,
                                                LineColor = RGB::Red.[0.99],
                                                LineColor2 = RGB::Yellow.[0.99],
                                                XLinesVisible = FALSE,
                                                YLinesVisible = FALSE,
                                                Filled = FALSE
                                               )
                                  ):
                             
camera := plot::Camera([17, -24, 45],
                       [0.5, 0.4, -0.2],
                       0.038
                      ):
                             
ploteverything := plot::Canvas(funcplot, contours, projcontours,
                               Width = 200*unit::mm, 
                               Height = 150*unit::mm,
                               AxesTitles = ["x/L(x)", "y/L(y)", "z"],                                                              
                               camera
                              ): 
                          
plot(ploteverything)

Category:2D infinite square wells Category:Surface plots Category:Images with MuPad source code Category:Images with Mathematica source code

Wikimore

File:2D Wavefunction (2,2) Surface Plot.png

Mathematica Code

MuPAD Code