Ultra-high-aspect-ratio nanofluidic channels for high-throughput biological applications

[摘要] (cont.) Conformal, uniform deposition has been achieved along the entire depth of nanochannel and linear growth has been observed. Compared with the growth on flat substrate, significantly slower deposition per bilayer within nanochannels was found, which we attribute to the partioning effect. We also have performed dc conductance measurement to determine the wet-state thickness of PEM. The ability of uniform growth of PEM inside nanochannels not only allows the control of gap size, but also provides new functionalities with desired surface properties such as surface charge density, charge polarity, and hydrophobicity.

[发布机构] Massachusetts Institute of Technology