Anyone can give me advice what universities offer Nanotechnology or Nanoscience as undergraduate degree in California?
What is a close-related major (ex: chemical engineering or bio-engineering) that can land me jobs working with Nanoscience?
Many schools offer this major. You can do an easy search on Google.
I believe Materials Science & Engineering is your best bet for most undergrad programs, @dennisy
UCSD has BS in nanoengineering
But mostly, nanoscience is a specialty studied at the graduate level. ChemE or MSE will prepare you for that at the undergraduate level.
This. You shouldn’t try to get too specific or narrow in college - you want to develop some breadth. Materials science is probably where you want to look, or chemical or bioengineering perhaps.