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Self-reproducing machines

A set of modular robot cubes accomplish a feat fundamental to biological systems.


Self-reproduction is central to biological life for long-term sustainability and evolutionary adaptation. Although these traits would also be desirable in many engineered systems, the principles of self-reproduction have not been exploited in machine design1. Here we create simple machines that act as autonomous modular robots and are capable of physical self-reproduction using a set of cubes.

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  1. 1

    Sipper, M. & Reggia, J. A. Sci. Am. 285, 26–35 (2001).

  2. 2

    Jackman, R. J., Brittain, S. T., Adams, A., Prentiss, M. G. & Whitesides, G. M. Science 280, 2089–2091 (1998).

  3. 3

    Von Neumann, J. in Essays on Cellular Automata (ed. Burke, A. W.) 4–65 (Univ. of Illinois, Illinois, 1970).

  4. 4

    Freitas, R. A. & Merkle, R. C. Kinematic Self-Replicating Machines (Landes Bioscience, Georgetown, Texas, 2004).

  5. 5

    Langton, C. G. Physica 10, 134–144 (1984).

  6. 6

    Lohn, J. D. & Reggia, J. A. IEEE Trans. Evol. Comp. 1, 165–178 (1997).

  7. 7

    Butler, Z., Murata, S. & Rus, D. Distrib. Auton. Robot. Syst. 5, 37–48 (2002).

  8. 8

    Efstathios, M., Marcus, D., Desnoyer, M. & Lipson, H. Designed and Evolved Blueprints For Physical Self-Replicating Machines in Proc. Ninth Int. Conf. Artificial Life 15–20 (Boston, Massachusetts, 2004).

  9. 9

    Rubenstein, M., Krivokon, M. & Shen, W.-M. in Proc. IROS 2004 2661–2666 (Sendai, Japan, 2004).

  10. 10

    Yim, M., Zhang, Y. & Duff, D. IEEE Spectrum 39, 30–34 (2002).

  11. 11

    Penrose, L. S. Sci. Am. 200, 105–114 (1959).

  12. 12

    Chirikjian, G. S., Zhou, Y. & Suthakorn, J. IEEE/ASME Trans. Mechatron. 7, 462–472 (2002).

  13. 13

    Adams, B. & Lipson, H. in Lecture Notes in Computer Science Vol. 2801 (eds Banzhaf, W. et al.) 1–9 (Springer, Germany, 2003).

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Competing interests

The authors declare no competing financial interests.

Correspondence to Hod Lipson.

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Figure 1: Self-reproduction of a four-module robot.


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