Two lower bounds for self-assemblies at temperature 1
Using the Tile Assembly Model proposed by Rothemund and Winfree, we give two lower bounds on the minimum number of tile types needed to uniquely assemble a shape at temperature 1 under a natural assumption that there are no binding domain mismatches (any two adjacent tiles either form a bond or else both touching sides of the tiles are without glues). Rothemund and Winfree showed that uniquely assembling a full N×N square (a square where there is a bond between any two adjacent tiles) at temperature 1 requires N2 distinct tile types, and conjectured that the minimum number of tile types needed to self-assemble an N×N square (not a full square) is 2N -1.Our lower bounds imply that a tile system that uniquely assembles an N×N square without binding domains mismatches, requires at least 2N-1 tile types.
Jan Manuch Ladislav Stacho Christine Stoll
School of Computing Science,Simon Fraser University,8888 University Drive,Burnaby BC V5A 1S6,Canada Department of Mathematics,Simon Fraser University,8888 University Drive,Burnaby BC V5A 1S6,Canada
国际会议
北京
英文
1-4
2009-06-11(万方平台首次上网日期,不代表论文的发表时间)