Large molecules made by mechanosynthesis can be stiff
Solution-phase organic synthesis has been used to make diamond-like structures about half as large as the rod segment shown here. Vapor-phase processes can make bulk diamond from smaller reactive molecules, but without precise control of shape and structural irregularities. Mechanical control will enable synthetic steps to be performed at chosen locations, avoiding side-reactions. This, in turn, will enable the construction of stiff structures of large size, like those made in vapor-phase processes, but made with the atomic precision characteristic of the products of organic synthesis.