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resistor_strip

Resistive Strip

Ni (200nm) ~ 10 Ω/square
Cr (100nm) ~ 10 kΩ/square
Ge too high to measure
Pdot too hight to measure

Nickel should be low resistance but it is weird when trying to use voltage division.

The strip will probably be 300microns x 10microns for 30 squares though this may end up being less because much of this distance will be covered in aluminum.

Note that the RC time constant needs to be low enough to allow for 30Hz operation Tau=RC 1MΩ*1pF=1mS period

But we also want to be sure the resistance is high enough to prevent large currents and heating. 300 kΩ is 10V/300kohms=33 microamps 100V/300kohms=333microamps

[Jacob K]
4/30/15 Alternate reading on Cr (10nm) ~1 kΩ/square. Used different crucible of Cr (Cr labelled in our cabinet instead of generic crucible on the counter) and also used the shutter during the evaporation process.
5/1/15 Checked resistivity again after going through chrome etch, conductivity restored after approximately 5 sec in CR7.

resistor_strip.txt · Last modified: 2015/05/01 11:36 by jkimbal2