Nanotech is so schroedinger - simple but complex. To create a tiny tiny piece of nanoscale sheet (1x10^-9 in width, length and height), you need cross-disciplinary knowledge in physics, bio and chemistry.

They say if you want to be real good, your basics must be solid. In nanotech, your basics go down to atom levels.

And if you think quantum is already small, nanotech gives you quantum dot. And they even call it zero dimension.

And if you want to be real bad, you can manipulate nanomaterials to change their colors. Of course industry patented blue light but no reason why you can’t recreate red light therapy with it.

Nanotech is so small, one can even inject tiny robots (nanobots) into you to combat cellular-level diseases. Just make sure it’s out.

And if you use sunscreen, you have nano materials absorbing into your skin through zinc oxide nanoparticles. It’s supposedly large enough not to penetrate all the way in, and remains in your outer layer - but oh boy.

One of the most surprising learnings is using cultured bacteria and virus to create organic nanotech materials. But the more common ones are the ones made out of carbon and metal structures like graphene.

At nanoscale, materials often have a higher surface to volume ratio, which means the atoms hangs out on the surface - which is why it can be really thin and super conductive. This led to the ultra-tiny super electronic circuits, some even smaller than a fingernail.

And much like decentralization, nanomaterials has unique electrical, thermal, and mechanical properties individually - as opposed to being lumped up together in bulk counterparts.

My take is that nanotech is like a remix of basic electronics and electromagnetic theory. You def need the fundamentals, but the applications are an entirely different ballgame

But I am amazed at how something so small can be so powerful. There’s so much potentials in mastering miniaturisation.