AVS 52nd International Symposium
    Nanometer-Scale Science and Technology Tuesday Sessions
       Session NS-TuP

Paper NS-TuP22
Synthesis of Carbon Nanofibers on TiW Substrates and Their Field Emission Properties

Tuesday, November 1, 2005, 4:00 pm, Room Exhibit Hall C&D

Session: Nanometer Scale Science and Technology Poster Session
Presenter: K. Hou, College of William and Mary
Authors: K. Hou, College of William and Mary
J.J. Wang, College of William and Mary
P. Miraldo, College of William and Mary
R.A. Outlaw, College of William and Mary
B.C. Holloway, College of William and Mary
Correspondent: Click to Email
Spaghetti-like and aligned carbon nanofibers have been synthesized on TiW substrates by DC PECVD at a substrate temperature of 635°C. The morphology transition from spaghetti-like to aligned carbon nanofibers has been observed to be a function of plasma power. It is found that the growth rate plays an important role in determining the morphology of carbon nanofibers. When the growth rate is less than 150 nm/min, aligned carbon nanofibers can be fabricated. Otherwise, spaghetti-like carbon nanofibers are formed. The growth rate of carbon nanofibers fabricated on TiW substrate at 550°C is also measured in this work. The field emission properties of both spaghetti-like and aligned carbon nanofibers grown on TiW substrate at 635°C have also been investigated.