<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Self-Replicating Strands that Self-Assemble into User-Specified Meshes"^^ . "It has been argued that a central objective of nanotechnology is to make\nproducts inexpensively, and that self-replication is an effective approach to\nvery low-cost manufacturing. The research presented here is intended to be a\nstep towards this vision. In previous work (JohnnyVon 1.0), we simulated\nmachines that bonded together to form self-replicating strands. There were two\ntypes of machines (called types 0 and 1), which enabled strands to encode\narbitrary bit strings. However, the information encoded in the strands had no\nfunctional role in the simulation. The information was replicated without being\ninterpreted, which was a significant limitation for potential manufacturing\napplications. In the current work (JohnnyVon 2.0), the information in a strand\nis interpreted as instructions for assembling a polygonal mesh. There are now\nfour types of machines and the information encoded in a strand determines how\nit folds. A strand may be in an unfolded state, in which the bonds are straight\n(although they flex slightly due to virtual forces acting on the machines), or\nin a folded state, in which the bond angles depend on the types of machines. By\nchoosing the sequence of machine types in a strand, the user can specify a\nvariety of polygonal shapes. A simulation typically begins with an initial\nunfolded seed strand in a soup of unbonded machines. The seed strand replicates\nby bonding with free machines in the soup. The child strands fold into the\nencoded polygonal shape, and then the polygons drift together and bond to form\na mesh. We demonstrate that a variety of polygonal meshes can be manufactured\nin the simulation, by simply changing the sequence of machine types in the\nseed."^^ . "2005-02" . . . . . . . . . . . "Peter"^^ . "Turney"^^ . "Peter Turney"^^ . . "Robert"^^ . "Ewaschuk"^^ . "Robert Ewaschuk"^^ . . . . . . "Self-Replicating Strands that Self-Assemble into User-Specified Meshes (PDF)"^^ . . . . . . . . . "NRC-47442.pdf"^^ . . . "Self-Replicating Strands that Self-Assemble into User-Specified Meshes (Image (PNG))"^^ . . . . . . "preview.png"^^ . . . "Self-Replicating Strands that Self-Assemble into User-Specified Meshes (Indexer Terms)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #4110 \n\nSelf-Replicating Strands that Self-Assemble into User-Specified Meshes\n\n" . "text/html" . . . "Dynamical Systems" . . . "Theoretical Biology" . .