What are the differences between structural nanotechnology and molecular nanotechnology?
Structural nanotech is what’s being done today in the labs. Working with all sorts of big chemicals and small pieces of stuff, learning how to make it and what it’s good for. You can get clear sunscreen particles, glowing dots that don’t fade, faster and more exotic electronics, and all sorts of other useful stuff that can be built into products. Molecular nanotechnology, or MNT, is not about creating technologies to be built into products–it’s about creating the whole product by molecular manufacturing, a few atoms at a time. Some of the products will be quite small, of course. A MNT-built computer could fit inside a bacterium. But some of the most useful products will be a lot larger. One likely way to do MNT is by mechanochemistry: using machines to position and guide chemical reactions. Each machine can only do one reaction at a time. So an important part of MNT will be building manufacturing systems that can duplicate themselves, growing exponentially to provide enough manufactur
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