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The art of building things not from atoms, but from the particles that constitute them: electrons, protons, neutrons, and eventually quarks and gluons. This is manufacturing and manipulation at the femtometer scale. Imagine crafting materials where protons are arranged in non-atomic lattices, creating "electron crystals" where the wavefunctions are sculpted into specific shapes, or designing forces by arranging gluon fields. The properties of such constructs would be alien, governed by quantum chromodynamics and electroweak theory rather than traditional chemistry.
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