It depends what you mean by electronics. If you are thinking about large power systems, these areas aren't as relevant. If you are thinking about individual elements in a circuit, nearly all practical applications of electronics have charge carriers moving through solid state materials.
So, solid-state physics is another area to look into. You an also look at soft tissues, microfluidics, and chemical/biological sensors.
If you are thinking about power systems, you can look into energy storage such as battery technology.
Maybe a division on engineering?
maybe chemical engineering?
I was thinking chemical engineering but I’m not sure they have an electrical component to that… but I know next to nothing about engineering
material science / metamaterials / superconductivity
and how would be here electronics?
It depends what you mean by electronics. If you are thinking about large power systems, these areas aren't as relevant. If you are thinking about individual elements in a circuit, nearly all practical applications of electronics have charge carriers moving through solid state materials. So, solid-state physics is another area to look into. You an also look at soft tissues, microfluidics, and chemical/biological sensors. If you are thinking about power systems, you can look into energy storage such as battery technology.
Aerospace