Carbon nanotube based (Bio) electronic devices

Novel single-walled carbon nanotube (SWNT) based biosensors and chemical sensors for real-time detection of organophosphate and nitrylphenol compounds, respectively, have been developed. Horizontally aligned SWNTs are assembled to desirable electrodes using AC dielectrophoresis technique. For SWNT b...

Full description

Saved in:
Bibliographic Details
Main Author: Liu, Ning Yi
Other Authors: Zhang Qing
Format: Theses and Dissertations
Language:English
Published: 2008
Subjects:
Online Access:https://hdl.handle.net/10356/13144
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-13144
record_format dspace
spelling sg-ntu-dr.10356-131442023-07-04T17:00:23Z Carbon nanotube based (Bio) electronic devices Liu, Ning Yi Zhang Qing School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Electronic apparatus and materials DRNTU::Engineering::Electrical and electronic engineering::Nanoelectronics Novel single-walled carbon nanotube (SWNT) based biosensors and chemical sensors for real-time detection of organophosphate and nitrylphenol compounds, respectively, have been developed. Horizontally aligned SWNTs are assembled to desirable electrodes using AC dielectrophoresis technique. For SWNT based organophosphate sensors, organophosphorus hydrolase (OPH) immobilized on the SWNTs by non-specific binding triggers enzymatic hydrolysis of organophosphates (OPs), such as paraoxon, consequently causing a detectable change in the conductance of the SWNTs. The conductance change is found to be correlated to the concentration of organophosphate. For nitrylphenol compounds detection, as-prepared CNTFETs were used. The response of the SWNT conductance was also found to be directly proportional to the concentration of nitrylphenol compound in the solution. Our results suggest that the novel biosensors and chemical sensors have great potentials to serve as a simple and reusable platform of sensing organophosphate and nitrophenol on a real-time basis. Fabrication details and detection mechanisms of these SWNT based electronic sensors are also discussed in the report. In addition, we analyzed the current fluctuation for these SWNT devices and found that 1/f noise at low frequency region plays a key role of affecting the CNT channel current. MASTER OF ENGINEERING (EEE) 2008-10-20T07:15:58Z 2008-10-20T07:15:58Z 2008 2008 Thesis Liu, N. Y. (2008). Carbon nanotube based (Bio) electronic devices. Master’s thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/13144 10.32657/10356/13144 en 123 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering::Electronic apparatus and materials
DRNTU::Engineering::Electrical and electronic engineering::Nanoelectronics
spellingShingle DRNTU::Engineering::Electrical and electronic engineering::Electronic apparatus and materials
DRNTU::Engineering::Electrical and electronic engineering::Nanoelectronics
Liu, Ning Yi
Carbon nanotube based (Bio) electronic devices
description Novel single-walled carbon nanotube (SWNT) based biosensors and chemical sensors for real-time detection of organophosphate and nitrylphenol compounds, respectively, have been developed. Horizontally aligned SWNTs are assembled to desirable electrodes using AC dielectrophoresis technique. For SWNT based organophosphate sensors, organophosphorus hydrolase (OPH) immobilized on the SWNTs by non-specific binding triggers enzymatic hydrolysis of organophosphates (OPs), such as paraoxon, consequently causing a detectable change in the conductance of the SWNTs. The conductance change is found to be correlated to the concentration of organophosphate. For nitrylphenol compounds detection, as-prepared CNTFETs were used. The response of the SWNT conductance was also found to be directly proportional to the concentration of nitrylphenol compound in the solution. Our results suggest that the novel biosensors and chemical sensors have great potentials to serve as a simple and reusable platform of sensing organophosphate and nitrophenol on a real-time basis. Fabrication details and detection mechanisms of these SWNT based electronic sensors are also discussed in the report. In addition, we analyzed the current fluctuation for these SWNT devices and found that 1/f noise at low frequency region plays a key role of affecting the CNT channel current.
author2 Zhang Qing
author_facet Zhang Qing
Liu, Ning Yi
format Theses and Dissertations
author Liu, Ning Yi
author_sort Liu, Ning Yi
title Carbon nanotube based (Bio) electronic devices
title_short Carbon nanotube based (Bio) electronic devices
title_full Carbon nanotube based (Bio) electronic devices
title_fullStr Carbon nanotube based (Bio) electronic devices
title_full_unstemmed Carbon nanotube based (Bio) electronic devices
title_sort carbon nanotube based (bio) electronic devices
publishDate 2008
url https://hdl.handle.net/10356/13144
_version_ 1772828903748927488