Film-Thicknss-measurement-using-OpenCV-and-Waight-difference

Mass Determination

Substrate mass without film = M1

Substrate mass with film = M2

Mass of the film = Mfilm = (M2 – M1)

Volume Determination

Area of standard square = As

Area of the film = Af

Area of the standard square in real scale = R

Then, area of the film in cm scale =(A_f/A_s ×R)

Let, the hight (or thickness) of the film be h Volume of the film = A. h And density D

Thickness Determination

then,A.h.D=M_film

h=M_film/(A.D)

Experiment

Images

Normal Image	Finding Edge using ImageJ
Film	Film Edge

Calculations

M1 = 2.189 g

M2 = 2.195 g

M_film = (M2 – M1) = 0.006 g

As = 1015920

Af = 517878

A = (517878/1015920×4) = 2.039

D = 4.23 g/cm3 (rutile), 3.78 g/cm3 (anatase)

h = 0.0006956546 = 6.96 µm (for rutile)

h = 0.0007784706 = 7.78 µm (for anatase)