Latin American and Caribbean Consortium of Engineering Institutions

Conference Track:  Emerging Technologies

Keywords:         surface modification , carbon nanotubes, sensors, PVA

Contact Title:    Dr.

Contact First Name: Wonbong

Contact Last Name:  Choi

University:       Florida International University

Web:              http://faculty.eng.fiu.edu/~wchoi

Position:         Associate Professor

Country:          USA

Email:            choiw@fiu.edu

Paper Title:

Surface modification of carbon nanotubes using poly(vinyl alcohol) for sensor applications

Abstract:

Surface modification of the carbon nanotubes (CNTs) plays an important role for their utilization in various applications. Earlier studies focused on surface modification of nanotubes for their use as reinforcing agent in composites or for gas sensing applications. In this study, vertically aligned single-wall and multiwall CNTs were grown on a 1 cm2 silicon dioxide substrate using chemical vapour deposition (CVD). The surface of grown nanotubes was modified by polyvinyl alcohol (PVA) and the wettability on nanotubes was investigated by using wettability analyzer. The electrical characterization of these modified nanotubes were performed since it is expected that by adapting analysts onto the PVA modified CNT, the electric transport property of CNT may changed. In this report, the detailed mechanism of charge transport by modified CNT will be discussed. Sensory applications of these modified nanotubes are also suggested.

Mailing Address:

EAS 3465,Mechanical Engineering Department

10555 west flagler street, Miami

FL 33174

Phone: 305-348-1973

Authors:

Harindra Vedala(P)(hveda002@fiu.edu),

Eungmin Lee,Gene Kim(EGK005@motorola.com)

Young Chul Choi,

Won Bong Choi(choiw@fiu.edu), Assistant Professor