Study of substrate-directed ordering of long double-stranded DNA molecules on bare highly oriented pyrolytic graphite surface based on atomic force microscopy relocation imaging
Date
2008
Authors
Wang, H.
An, H.
Zhang, F.
Zhang, Z.
Ye, M.
Xiu, P.
Zhang, Y.
Hu, J.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Journal of Vacuum Science and Technology Part B: Nanotechnology and Microelectronics, 2008; 26(5):L41-L44
Statement of Responsibility
Huabin Wang, Hongjie An, Feng Zhang, Zhixiang Zhang, Ming Ye, Peng Xiu, Yi Zhang, Jun Hu
Conference Name
Abstract
<jats:p>Usually, long double-stranded DNA molecules exhibit an aggregated or a random spreading behavior when deposited on a highly ordered pyrolytic graphite (HOPG) substrate. In this article, the authors report a novel phenomenon where randomly oriented DNA strands can gradually be rearranged into two-dimensional ordered nanostructures under the operation of repeatedly rotating a water droplet on the DNA sample. The process of DNA rearrangement was traced by using atomic force microscopy relocation imaging. The orientation of the ordered DNA strands shows a threefold symmetry consistent with the underlying atomic lattice of the HOPG substrate, signifying a substrate-directed ordering process. The relevant mechanism is discussed.</jats:p>
School/Discipline
Dissertation Note
Provenance
Description
2008 American Vacuum Society