- Xia, Deying and Gamble, Thomas C. and Mendoza, Edgar A. and Koch, Steven J. and He, Xiang and Lopez, Gabriel P. and Brueck, S. R. J., DNA transport in hierarchically-structured colloidal-nanoparticle porous-wall nanochannels,
NANO LETTERS, vol. 8 no. 6
pp. 1610--1618 [doi] .
(last updated on 2010/02/08)
We report a simple approach to the formation of 3D colloidal nanoparticle structures incorporating enclosed mesoscopic structures through a simple process of spin-coating-driven directed self-assembly onto lithographically defined polymer templates. Removal of the buried polymer patterns by high temperature calcination results in the formation of hierarchically enclosed channels, continuous networks, isolated cavities, and multilayered structures with high stability and environmental resistance. These channels are used to investigate the transport of DNA molecules in constrained geometries.