Difference between revisions of "Building n by n squares"
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==Building $n \times n$ squares== | ==Building $n \times n$ squares== | ||
| − | Since Winfree showed in his thesis <ref name=Winf98 /> that the aTAM is computationally universal, we know that we can algorithmically direct the growth of assemblies. This ability allows for not only the creation of complicated and precise shapes, but also often for them to be created very tile type efficiently (i.e. they require small tile sets - those with few numbers of unique tile types). A benchmark problem for tile-based self-assembly is that of assembling an $n \times n$ square since this requires that the tiles somehow compute the value of $n$ and thus "know when to stop" at the boundaries. In <ref name =RotWin00> Rothemund and Winfree showed that binary counters can be used to guide the growth of squares and that thereby it is possible to self-assemble an $n \times n$ square using $O(\log n)$ tile types. | + | Since Winfree showed in his thesis <ref name=Winf98 /> that the aTAM is computationally universal, we know that we can algorithmically direct the growth of assemblies. This ability allows for not only the creation of complicated and precise shapes, but also often for them to be created very tile type efficiently (i.e. they require small tile sets - those with few numbers of unique tile types). A benchmark problem for tile-based self-assembly is that of assembling an $n \times n$ square since this requires that the tiles somehow compute the value of $n$ and thus "know when to stop" at the boundaries. In <ref name =RotWin00 /> Rothemund and Winfree showed that binary counters can be used to guide the growth of squares and that thereby it is possible to self-assemble an $n \times n$ square using $O(\log n)$ tile types. |
==References== | ==References== | ||
Revision as of 10:36, 11 June 2013
Building \(n \times n\) squares
Since Winfree showed in his thesis [1] that the aTAM is computationally universal, we know that we can algorithmically direct the growth of assemblies. This ability allows for not only the creation of complicated and precise shapes, but also often for them to be created very tile type efficiently (i.e. they require small tile sets - those with few numbers of unique tile types). A benchmark problem for tile-based self-assembly is that of assembling an \(n \times n\) square since this requires that the tiles somehow compute the value of \(n\) and thus "know when to stop" at the boundaries. In [2] Rothemund and Winfree showed that binary counters can be used to guide the growth of squares and that thereby it is possible to self-assemble an \(n \times n\) square using \(O(\log n)\) tile types.
References
- ↑
Erik Winfree - Algorithmic Self-Assembly of DNA
- Ph.D. Thesis, California Institute of Technology , June 1998
- BibtexAuthor : Erik Winfree
Title : Algorithmic Self-Assembly of DNA
In : Ph.D. Thesis, California Institute of Technology -
Address :
Date : June 1998
- ↑
Paul W. K. Rothemund, Erik Winfree - The Program-size Complexity of Self-Assembled Squares (extended abstract)
- STOC '00: Proceedings of the thirty-second annual ACM Symposium on Theory of Computing pp. 459--468, Portland, Oregon, United States,2000
- BibtexAuthor : Paul W. K. Rothemund, Erik Winfree
Title : The Program-size Complexity of Self-Assembled Squares (extended abstract)
In : STOC '00: Proceedings of the thirty-second annual ACM Symposium on Theory of Computing -
Address : Portland, Oregon, United States
Date : 2000
Cite error: <ref> tag with name "Roth01" defined in <references> is not used in prior text.
Cite error: <ref> tag with name "jSSADST" defined in <references> is not used in prior text.
Cite error: <ref> tag with name "SolWin07" defined in <references> is not used in prior text.
