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Precision Milling of Carbon Nanotube Forests Using Low Pressure Scanning Electron Microscopy
Published on: February 5, 2017
Multiple radial corrugations in multiwalled carbon nanotubes under pressure
Hiroyuki Shima1, Motohiro Sato
1Department of Applied Physics, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
Nanotechnology
|July 7, 2011
Summary
Multiwalled carbon nanotubes exhibit radial elastic corrugation under high hydrostatic pressure. The stable patterns depend on tube diameter and wall number, with a phase diagram guiding selection.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Multiwalled carbon nanotubes (MWCNTs) are crucial in nanotechnology.
- Understanding their mechanical behavior under extreme conditions like high hydrostatic pressure is vital for advanced applications.
Purpose of the Study:
- To investigate the radial elastic corrugation of MWCNTs under hydrostatic pressure.
- To determine the factors influencing the observed corrugation patterns and establish a predictive model.
Main Methods:
- Application of continuum elastic theory to model MWCNT behavior.
- Analysis of various corrugation patterns emerging at pressures of several GigaPascals (GPa).
Main Results:
- Demonstration of radial elastic corrugation in MWCNTs under hydrostatic pressure.
- Identification of specific corrugation patterns dependent on the innermost tube diameter (D) and the total number of concentric walls (N).
- Establishment of a phase diagram correlating D and N values with desired corrugation patterns.
Conclusions:
- The cross-sectional shape of MWCNTs under pressure is controllable by adjusting D and N.
- The cylindrical symmetry of the innermost tube remains intact even under significant external pressure.
- The developed phase diagram serves as a practical tool for designing MWCNTs with specific mechanical responses.
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