About "meshgrid" why my Z axis got the same value

I'm trying to calculate the function of some quantum equation

my three axis is (dd,EE,t)as we use(x,y,z)

I found my "ti" matrix they all got the same value

plz if there anyone can help me :(

here's the link of my equation

here's my code,

b=linspace(0,3,100);

E=linspace(31,40,100);

c1=5.732*10.^17;

c2=-1.866*10.^-16;

F=5.4;

[bb,EE]=meshgrid(b,E);

ti=c1*exp(c2*((F*bb).^1.5-(EE).^1.5)./(F+EE./bb));

t=1./ti;

mesh(bb,EE,t);

Answer 1

[Matt J]

I don't find that your t are all the same. It's true the differences are small

    >> max(t(:)) - min(t(:))

    ans =

       3.0815e-33

I suspect you're supposed to be looking at

Z=((F*bb).^1.5-(EE).^1.5)./(F+EE./bb)

over a much larger range of values. As it stands, c2*Z is so close to zero all the time that

 exp(c2*Z)

has very little variation from 1

[Baron Wang]

Thanks for telling me the super small variation XD

I think this is a key point!!

BTW, in this case if the "t" have small difference

can I just modify the range from Z axis ?

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yeap, Actually I can't take off any part of the equation XD

so I tend to keep the number but emphasize the super mini part

it's ummm

the carrier mechanism in Solar cell's structure (recombination , radiation , etc)

[Matt J]

Yes, you can use ZLIM to change the axis limits and get a zoomed view. I'm not sure how computationally meaningfully the results you're getting are, though.