hm... using some highschool/freshmen college physics and a few assumptions.... it is pretty hard to make i think.... but what do i know...?
assume:
- this is a typical parallel plate capacitor....
- separation between the plates is 1 um.
- dielectric constant is strontium titanate = 332 (largest i could find in my textbook...)
Through some calculations...
The area of the plates should be about 1km squared...
Assume:
- capacitor has an area of 2cmx5cm = 10cm squared
- the thickness of 1 layer of the capacitor is 2um.
1km^2 = 1,000 m^2 = 100000 cm^2 (maybe i am a wrong)
I will need 10000 layers of this to get 1km^2....
10000 layers of 2um thick gives 2cm.
So i am thinking a cap will have to be at least 2x2x5 cm to get 3F....
But is it possible to keep costs low and have these kind of specs?
(1um spacing in a capacitor with 2um layers? strontium titanate as a dielectric?)
Or is it because i am only a freshman college student and don't understand the finer details involved....?