I posted this in the physics section. I now think this might be more appropriate section for these questions.
I am looking for answers to the following:
- What is the order of magnitude of change in electric current when the diameter of the conducting material (that is tens of nano meters) changes by a few (say 1 to 5) nano meters, like in a chip? I am thinking of constant voltage source as that is more commonly used in circuits involving ICs. Is that correct? I am thinking that the change in current would be of the order of tens of nano amperes. Is that correct?
2.What is the easiest way (circuitry) to measure the change in electric current due to change in conducting material? I would like to measure the change NOT necessarily the original current flowing. Is it possible to find a source which has circuit of a pico ammeter that I can use in the circuitry?
Look forward to your thoughts
Thanks in advance