Strain energy and lateral friction force distributions of carbon nanotubes manipulated into shapes by atomic force microscopy
| Autor: | Mark C. Strus, Pablo Ares, Arvind Raman, Vincente Lopez, Ron Reifenberger, Roya R. Lahiji |
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| Rok vydání: | 2009 |
| Předmět: |
Engineering Physics
Nanotube Materials science Bioengineering Mechanical properties of carbon nanotubes Bending Carbon nanotube law.invention Strain energy Condensed Matter::Materials Science Flexural strength law General Materials Science Electrical and Electronic Engineering Composite material atomic force microscopy carbon nanotubes Applied Mechanics Mechanical Engineering Other Materials Science and Engineering Flexural rigidity General Chemistry bending lateral static friction forces Nanoscience and Nanotechnology AFM MANIPULATION NANOMECHANICS SURFACES Mechanics of Materials mechanical flexural strain energy Other Mechanical Engineering Nanomechanics |
| Zdroj: | Birck and NCN Publications Other Nanotechnology Publications |
| Popis: | The interplay between local mechanical strain energy and lateral frictional forces determines the shape of carbon nanotubes on substrates. In turn, because of its nanometer-size diameter, the shape of a carbon nanotube strongly influences its local electronic, chemical, and mechanical properties. Few, if any, methods exist for resolving the strain energy and static frictional forces along the length of a deformed nanotube supported on a substrate. We present a method using nonlinear elastic rod theory in which we compute the flexural strain energy and static frictional forces along the length of single walled carbon nanotubes (SWCNTs) manipulated into various shapes on a clean SiO(2) substrate. Using only high resolution atomic force microscopy images of curved single walled nanotubes, we estimate flexural strain energy distributions on the order of attojoules per nanometer and the static frictional forces between a SWCNT and SiO(2) surface to be a minimum of 230 pN nm(-1). |
| Databáze: | OpenAIRE |
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