A new platform for assembly of carbon nanotubes on nano sensors by utilizing optically-induced dielectrophoresis and dielectrophoresis

Author

Wu, Pei-Fang ; Lee, Gwo-Bin

Author_Institution

Dept. of Eng. Sci., Nat. Cheng Kung Univ., Tainan, Taiwan

fYear

2011

fDate

5-9 June 2011

Firstpage

633

Lastpage

636

Abstract

This study reports a new platform capable of assembling carbon nanotubes (CNTs) between electrodes to form CNT-based nano sensors based on the combination of optically-induced dielectrophoresis (ODEP) force and dielectrophoresis (DEP) force. Indium-tin-oxide (ITO) electrodes and amorphous silicon (a-Si) layer were patterned and then used to assemble CNTs. By utilizing moving light patterns, the CNTs could be collected to the central area between two ITO electrodes. The CNTs with different concentrations can be collected to form CNT-based nano sensors with different widths of sensing elements successfully. Preliminary results for CNTs immobilization were also demonstrated by exposing them to an ultraviolet (UV) light source.

Keywords

carbon nanotubes; electrophoresis; nanosensors; C; CNT-based nanosensors; ITO; ODEP force; UV light source; carbon nanotube based sensors; electrodes; optically-induced dielectrophoresis force; ultraviolet light source; Carbon nanotubes; Dielectrophoresis; Electrodes; Force; Indium tin oxide; Optical sensors; Carbon nanotubes; ITO electrodes; dielectrophoresis; optically-induced dielectrophoresis;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International

Conference_Location

Beijing

ISSN

Pending

Print_ISBN

978-1-4577-0157-3

Type

conf

DOI

10.1109/TRANSDUCERS.2011.5969786

Filename

5969786