@article {1340276, title = {Fabrication of Topologically Complex Three-Dimensional Microstructures: Metallic Microknots}, journal = {J. Am. Chem. Soc.}, volume = {122}, year = {2001}, note = {727}, pages = {12691-12699}, author = {Wu, H. and Brittain, S. T. and J. R. Anderson and Grzybowski, B. A. and Whitesides, S. and Whitesides, G. M.} }