Chapter category: Nanomedicine

APPENDIX B Design Notes on Some Aspects of the Merkle Freitas Molecular Assembler

This chapter appears in the following book:

Kinematic Self-Replicating Machines

Edited by: Robert A. Freitas, Jr. and Ralph C. Merkle
ISBN: 1-57059-690-5
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Chapter authors:
Robert A. Freitas Jr. and Ralph C. Merkle

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Geometrical Derivation of Assembler Dimensions A preliminary design iteration revealed that the physical dimensions of the proposed molecular assembler are constrained by the choice of 4 box-specific geometrical parameters and 7 additional geometrical parameters related to the operation of the interior Stewart platform manipulators, the X-axis elevator upon which the manipulators ride, and the piston. Choosing a priori values for these 11 parameters establishes all remaining major physical dimensions of the system. In the following scaling analysis, the exterior physical dimensions of the proposed molecular assembler hull are (Xext, Yext, Zext) with enclosed exterior volume Vext = Xext Yext Zext and external surface area Sext = 2 (Xext Yext + Xext Zext + Yext Zext), and the internal physical dimensions of the assembler hull are (Xint, Yint, Zint) with enclosed interior volume Vint = Xint Yint Zint and internal surface area Sint = 2 (Xint Yint + Xint Zint + Yint Zint), using the coordinate system as defined by Figure B.1.

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APPENDIX B Design Notes on Some Aspects of the Merkle Freitas Molecular Assembler