Alignment of Interacting Multi-Wall Carbon Nanotubes in Suspension Using Dielectrophorectic Framework
- Resource Type
- Conference
- Authors
- Ismail, Ishrat; Zubair, Ahmed
- Source
- 2022 12th International Conference on Electrical and Computer Engineering (ICECE) Electrical and Computer Engineering (ICECE), 2022 12th International Conference on. :405-408 Dec, 2022
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Nuclear Engineering
Photonics and Electrooptics
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Time-frequency analysis
Solvents
Fluids
Carbon nanotubes
Nanoscale devices
Mathematical models
Electron tubes
Carbon Nanotubes
Dielectrophoresis
Rotational Motion
Suspending Fluid
Alignment
- Language
- ISSN
- 2771-7917
The alignment of interacting multi-wall carbon nanotubes (MWCNT) in a suspending fluid under an alternating current electric field is theoretically investigated here. The rotational motion of the tubes was modeled using coupled non-linear differential equations and the proposed model is based on dielectrophoresis-induced torque which considers the rotational motion of interacting MWCNTs represented as charged electrical dipoles with opposite charges at both ends. The time taken for alignment of the MWCNTs under the applied AC electric field was numerically calculated for different initial orientations of MWCNTs in different suspending fluids. The influence of MWCNT length, as well as the frequency of the AC electric field on the alignment time, was also studied. The physical properties of the fluids used as solvents significantly differ in polarity index and it is evident that the CNTs tend to align faster in highly polar solvents. Moreover, a longer MWCNT facilitates faster alignment as the dipole moment increases with the increase in length. With increased frequency, the alignment time of CNT increased as the CNTs cannot respond accordingly at higher frequencies. The initial rotation angles of the CNTs played a key role in determining how fast the CNTs will settle down to the equilibrium position.