Friction of single polymers at surfaces
Atomic force microscope (AFM) single molecule force spectroscopy has been used to investigate the friction coefficient of individual polymers adsorbed onto a solid support. The polymer chains were covalently attached to an AFM tip and were allowed to adsorb on a mica surface. Different polymers (ssD...
| Veröffentlicht in: | Langmuir : the ACS journal of surfaces and colloids. - 1991. - 22(2006), 26 vom: 19. Dez., Seite 11180-6 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2006
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| Zugriff auf das übergeordnete Werk: | Langmuir : the ACS journal of surfaces and colloids |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't DNA, Single-Stranded Polyamines polyallylamine 30551-89-4 ADSS1 protein, human EC 6.3.4.4 Adenylosuccinate Synthase |
| Zusammenfassung: | Atomic force microscope (AFM) single molecule force spectroscopy has been used to investigate the friction coefficient of individual polymers adsorbed onto a solid support. The polymer chains were covalently attached to an AFM tip and were allowed to adsorb on a mica surface. Different polymers (ssDNA, polyallylamine) were chosen to cover a range of friction coefficients. During the experiment, the AFM tip was retracted in- and off-plane which results, depending on the chosen conditions, in a desorption of the polymer from the surface, a sliding across the surface, or a combination of both. Thus, the obtained force-extension spectra reveal detailed information on the mobility of a polymer chain on a surface under experimentally accessible conditions. This study demonstrates that absorbed polymers with comparable desorption forces may exhibit drastically different in plane mobility |
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| Beschreibung: | Date Completed 26.01.2007 Date Revised 14.10.2019 published: Print Citation Status MEDLINE |
| ISSN: | 0743-7463 |