measuring very high resistances about 10**15 ohms
Physikfan, Tue Nov 17 2020, 08:08PMTo all friends of challenging measurements
Please does someone have experience by measuring very high resistances, for example about
10**15 ohms?
regards
Physikfan
Re: measuring very high resistances about 10**15 ohms
klugesmith, Thu Nov 19 2020, 02:27AM
I'd be concerned with whether something that nonconductive behaves according to Ohm's Law, in order to have a meaningful resistance value.
Can it tolerate a test voltage of + or - 1 kV, or 10 kV? While the resulting current of 1 or 10 pA is measured?
How can instruments be connected to the device under test, without trouble from insulation breakdown, or leakage current (even leakage through air, from background ionization)?
Can you connect 1000 identical things in parallel, and measure resistance of 10**12 ohms?
It might help if you were more specific about the thing being measured. Am considering things like floating gate electrodes in nonvolatile semiconductor memory devices.
klugesmith, Thu Nov 19 2020, 02:27AM
I'd be concerned with whether something that nonconductive behaves according to Ohm's Law, in order to have a meaningful resistance value.
Can it tolerate a test voltage of + or - 1 kV, or 10 kV? While the resulting current of 1 or 10 pA is measured?
How can instruments be connected to the device under test, without trouble from insulation breakdown, or leakage current (even leakage through air, from background ionization)?
Can you connect 1000 identical things in parallel, and measure resistance of 10**12 ohms?
It might help if you were more specific about the thing being measured. Am considering things like floating gate electrodes in nonvolatile semiconductor memory devices.
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