期刊
SOFT MATTER
卷 5, 期 4, 页码 736-739出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b814583k
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资金
- Nanoscale Science and Engineering Initiative of the National Science Foundation under NSF Award [EEC-0647560]
- NSF [DMR-0503943]
- Department of Energy under the CSGF award [DE-FG02-97ER25308]
Several recent research works focus on nanofibers covered by molecules that self-assemble into chiral helices. While the formation of helical structures has been explained mostly on a case by case basis, the ubiquitous presence of chirality at the nanoscale suggests the existence of a unifying description. We present a model for computing the optimal arrangement of charged stripes over a cylindrical fiber, and show how helical structures can arise spontaneously from screened Coulomb interactions. We obtain the phase diagram and discuss some applications to nanoscale systems such as self-assembled peptide nanotubes, carbon nanotubes, and filamentous viruses.
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