Material and device investigations on a carbon nanotube-based torsional nanoelectromechanical system Public Deposited

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  • March 21, 2019
  • Hall, Adam Roger
    • Affiliation: College of Arts and Sciences, Department of Applied Physical Sciences, Materials Science Graduate Program
  • The experiments in this thesis present a foundational study of a nanoelectromechanical system that demonstrates high potential for use in a wide range of applications. This system incorporates an individual carbon nanotube as a torsional spring for a lithographically defined, nanometer-scale metal mass suspended above a substrate. Fabrication and operation of such a device is discussed. Investigations are then performed to elucidate a variety of material and device characteristics. First, the shear (twisting) modulus of an individual singlewall carbon nanotube is measured. This is done through a combination of direct electrostatic actuation and computer modeling. Next, the theoretical dependence of singlewall carbon nanotube transport properties on torsional strain is confirmed experimentally. Finally, the device is used as a self-sensing resonant oscillator. The characteristics of such a device and the implications of all results are discussed, as are future directions.
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  • In Copyright
  • Washburn, Michael Sean
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  • University of North Carolina at Chapel Hill
  • Open access

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