Register to reply

Flat 4-point probe on a circular sample

Share this thread:
gboff21
#1
Mar1-12, 09:01 AM
P: 50
In measuring of the resistance of a superconductor, we are using a four=point probe to determine the voltage. We have a circular sample with a non-negligible thickness and the 4 probes are lying flat on it.
Looking at http://www.fourpointprobes.com/4-point.html, our experiment is the same except that our probes are lying straight across the face of the sample instead of just touching with tips.
Will this affect the equation ρ=π/ln(2) * tV/I?
Phys.Org News Partner Physics news on Phys.org
Physicists discuss quantum pigeonhole principle
First in-situ images of void collapse in explosives
The first supercomputer simulations of 'spin?orbit' forces between neutrons and protons in an atomic nucleus

Register to reply

Related Discussions
A space Probe in the shape of an ellipsoid...find the hottest point on the probe's su Calculus & Beyond Homework 0
Hall Effect Probe/Sample Mount (Design) Engineering Systems & Design 3
Four point probe help General Physics 4
Probe returning with asteroid rock sample Astronomy & Astrophysics 0
4 point probe measurement help General Physics 1