| Original Articles |
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Experiments and Models of DNA Nano-Catenary Patterns Manipulated by Liquid Flow |
| ZHANG Yi;HU Jun;WU Shi-Ying;AI Xiao-Bai;LI Min-Qian |
| Shanghai Institute of Nuclear Research, Chinese Academy of
Sciences P.O. Box 800-204, Shanghai 201800
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| Cite this article: |
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ZHANG Yi, HU Jun, WU Shi-Ying et al 2002 Chin. Phys. Lett. 19 437-440 |
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Abstract Individual DNA molecules were first stretched by a centrifugal force and adsorbed on a modified mica surface. Then, a liquid flow was guided across the surface along a direction perpendicular to the aligned DNA strands. Some nano-catenary-like patterns of DNA molecules were formed, which were revealed by atomic force microscope. A physical mechanism called the “s-suspension bridge” model has been presented, by which the features of the catenary-like patterns of DNA molecules can be understood quantitatively quite well.
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| Keywords:
87.15.-v
87.64.Dz
87.90.+y
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Published: 01 March 2002
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| PACS: |
87.15.-v
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(Biomolecules: structure and physical properties)
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87.64.Dz
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(Scanning tunneling and atomic force microscopy)
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87.90.+y
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(Other topics in biological and medical physics)
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