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Fabrication of Carbon Nanotube High-Frequency Nanoelectronic Biosensor for Sensing in High Ionic Strength Solutions
Published on: July 22, 2013
Selective protein sensing using a carbon nanotube field-effect transistor
Masuhiro Abe1, Kastuyuki Murata, Tatsuaki Ataka
1Future Creation Laboratory, Olympus Corporation, Shinjuku Monolith, 3-1 Nishi-Shinjuku 2-Chome, Shinjuku, Tokyo 163-0914, Japan.
Journal of Nanoscience and Nanotechnology
|May 14, 2009
Summary
This study shows that carbon nanotube field-effect transistor (NTFET) sensors can selectively detect pig serum albumin (PSA) and mouse immune globulin (MIgG). The NTFET biosensors demonstrated good selectivity for both proteins in mixed samples.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Biosensors
Background:
- Carbon nanotube field-effect transistors (NTFETs) offer potential for highly sensitive biosensing applications.
- Developing selective biosensors is crucial for accurate disease diagnosis and monitoring.
Purpose of the Study:
- To evaluate the biosensing selectivity of NTFETs for pig serum albumin (PSA) and mouse immune globulin (MIgG).
- To determine the concentration limits for selective detection of PSA and MIgG using NTFETs.
Main Methods:
- Utilized NTFETs as the sensing platform.
- Tested sensor response in a mixture of PSA and MIgG.
- Analyzed selectivity using the Langmuir adsorption equation.
Main Results:
- NTFET sensors exhibited significant selectivity for both PSA and MIgG.
- Selective detection was achieved for PSA concentrations up to 500 nM.
- Selective detection was achieved for MIgG concentrations up to 5000 nM.
Conclusions:
- NTFETs are effective biosensors with high selectivity for target biomolecules.
- The developed NTFET biosensors show promise for multiplexed detection in complex biological samples.
