[volt-nuts] DIY JJ was Re: HP 3458A

[Chuck Harris]

I have a nice little vacuum deposition system that is capable of doing
just that sort of thing... the masks would be the major hurdle to cross.

College kids use the same sorts of systems to make their own photocells,
and organic LED's as a lab exercise.

-Chuck Harris

Marvin E. Gozum wrote:
> I too. But to raise a skeptics eye, the fundamentals of design is one of material
> chemistry and requires a different skill set.
>
>  From NIST papers, a JJ would require IC style fabrication, in order to get the
> sandwich of super and nonsuperconducting material to the right dimensions. Building a
> simple transistor would be an exercise for the JJ, and since Lilienfeld's FET, from
> 1925 to Shockley in 1949, DIY transistors have only recently been attempted and if
> successful, are far inferior in capability than any 20c 2n2222 you can get at Radio
> Shack. It suggests to me the success rate of getting high tolerance layers are fairly
> slim.
>
> http://en.wikipedia.org/wiki/Josephson_Effect
>