The so-called nano-particles have some amazing possibilities. I don't know if any of them have made it into common usage yet. They are somewhat unicorns like superconductors: they exist, and are possible to manufacture, but are not that easy to work with and are not ready for prime time consumer usage yet.
We may have a new replacement for concrete soon that consists of up to 95% recycled materials, and it's actually stronger than concrete. It consists of steel dust (waste from machining operations) and silica (sand or broken glass) mixed into the concrete-like material. Researcher accidentally discovers material that’s stronger and cheaper than concrete — and its potential is dizzying