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Carbon Nanotube Materials Characterization and Devices Design

Li, Weifeng
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1298043357

Abstract Details

2011, PhD, University of Cincinnati, Engineering and Applied Science: Mechanical Engineering.
The objective of this research is to characterize the electrical and mechanical properties of Carbon Nanotube (CNT) materials, and explore possible device applications for these materials. In order to achieve this goal, different forms of Carbon Nanotube materials – including Carbon Nanotubes, Carbon Nanotube Arrays, Carbon Nanotube Ribbon, Carbon Nanotube Thread, and sub-micrometer Carbon Nanotube Thread – were tested under a Scanning Electron Microscope (SEM) using a Micromanipulator (MM). Video and sound recording of the testing in the microscope provided new understanding how thread is formed and how nanotube materials fail. As-produced and thermally treated nanotubes were also tested. The main electrical parameters measured were electrical resistivity and maximum current density. The main mechanical property measured was strength. Together, these parameters are helping to determine the strongest and most conductive forms of CNT material. Putting nanotube materials into application is the ultimate goal of this continuing research. Several aggressive application ideas were investigated in a preliminary way in this work. In biomedical applications, a bundle of CNTs was formed for use as an electrode for accurate biosensing. A simple robot was designed using CNT electrical fiber. The robot was powered by two solenoids and could act as an in-body sensor and actuator to perform some impossible tasks from the viewpoint of current medical technology. In aerospace engineering, CNT materials could replace copper wire to reduce the weight of aircraft. Based on the excellent mechanical properties of CNT materials, a challenging idea is to use CNT material to build elevators to move payloads to outer space without using rockets. This dissertation makes contributions in the characterization of nanotube materials and in the design of miniature electromagnetic devices.
Mark Schulz, , PhD (Committee Chair)
Ernest Hall, PhD (Committee Member)
Dong Qian, PhD (Committee Member)
Vesselin Shanov, PhD (Committee Member)
135 p.
Engineering
Carbon Nanotubes; Characterization; Manipulation; Strength; Resistivity; nanodevice

Recommended Citations

Citations

  • Li, W. (2011). Carbon Nanotube Materials Characterization and Devices Design [Doctoral dissertation, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1298043357

    APA Style (7th edition)

  • Li, Weifeng. Carbon Nanotube Materials Characterization and Devices Design. 2011. University of Cincinnati, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1298043357.

    MLA Style (8th edition)

  • Li, Weifeng. "Carbon Nanotube Materials Characterization and Devices Design." Doctoral dissertation, University of Cincinnati, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1298043357

    Chicago Manual of Style (17th edition)

ucin1298043357
1,121
© 2011, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.