Engineering1969
Electrical
- Jul 29, 2020
- 1
Dear Ladys and Gentlemans,
I want to measure the sheet resistance R_square on a printing produkt.
My measuring equipment consists a SMU to supply and measure and a four point Probe by Jandel.
As output size I get the electrical resistance R.
So I have to multiply the geometric factor and a correction factor (correction factor because the width is small)
The derivation for the geometric factor I have found on :
And the correction factor table is shown here, in my case its on page 54
Funny but true, I get twice the value than in the reference measurement system (eddy current technology)
So may we can discuss why?
And the bigger Question: why is the resistance calculated in the derivation with U/2I.
In my opinion there is no superposition of currents because they have a different sign. (look at the attachment)
Thank you in advance
I want to measure the sheet resistance R_square on a printing produkt.
My measuring equipment consists a SMU to supply and measure and a four point Probe by Jandel.
As output size I get the electrical resistance R.
So I have to multiply the geometric factor and a correction factor (correction factor because the width is small)
The derivation for the geometric factor I have found on :
And the correction factor table is shown here, in my case its on page 54
Funny but true, I get twice the value than in the reference measurement system (eddy current technology)
So may we can discuss why?
And the bigger Question: why is the resistance calculated in the derivation with U/2I.
In my opinion there is no superposition of currents because they have a different sign. (look at the attachment)
Thank you in advance
