Latin American and Caribbean Consortium of Engineering Institutions
Conference Track: Emerging
Technologies
Keywords:
carbon nanotubes, carbon nanocoils, I-V characteristic
Contact Title:
Prof.
Contact First Name: Wonbong
Contact Last Name: Choi
University:
Florida International University
Web:
http://faculty.eng.fiu.edu/%7Ewchoi/
Position:
Associate Professor
Country:
USA
Email:
choiw@fiu.edu
Fax:
1-305-348-1932
Paper Title:
Characterization of various carbon nanomaterials synthesized by
chemical vapor deposition
Abstract:
Carbon nanotubes with various unique structures, including vertically aligned singlewall carbon nanotubes, Y-junction, and nanocoils, were synthesized by chemical vapor deposition. Singlewall nanotubes seem to be self-attracted to each other during vertical growth, forming numerous nanotube-towers with 10 mm in height and 2-3 mm in diameter. The density of Y-junction singlewall carbon nanotubes were simply controlled by variation of spinning rate when the substrates were coated with catalyst solution by spin coating. The Y-junctions have both metallic and semiconducting nanotubes, indicating the possible formation of Y-branchings with different electrical properties. Additionally, we grew carbon nanocoils on quartz substrates onto which indium tin oxide thin film had been formed. Growth behavior of carbon nanocoils was investigated with variation of spin-coating speed.
Mailing Address:
Dept of Mech. & Mater. Eng.
College of Engineering
10555 W. Flagler Street
Miami, FL 33174
Phone:
Authors:
Young Chul Choi(p), Eungmin Lee, Harindra Vedala, Won Bong Choi,
e-mail: choiw@fiu.edu
Department of Mechanical & Materials Engineering, Florida
International
University, Miami, FL 33174