Abstract
We are presenting a three-dimensional mathematical model and simulation for zinc-oxide nanowire field effect transistor (ZnO NW-FET) biosensor for detecting streptavidin/biotin binding. Implementing previously performed physical vapor deposition (PVD) techniques, ZnO NWs were synthesized with diameters in the range of 50-120 nm and lengths of 2-7.1 μm [5]. Our model is developed by using these dimensions and incorporating a spherical molecule model with uniform charge distribution that is immersed in a solvent with mobile univalent ions as developed in [1]. Applying Poisson-Boltzmann equation for boundary and continuity conditions, expression for the electrostatic potential distribution is obtained. This distribution is used to obtain the gate voltage and develop the I-V curves for ZnO NW-FET when used as a biosensor. In the saturation region, the I-V curves demonstrate that small changes in the gate voltage leads to exponentially larger changes in the drain current and allows for single biomolecule detection.
| Original language | English |
|---|---|
| Title of host publication | 2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011 |
| Pages | 412-415 |
| Number of pages | 4 |
| DOIs | |
| State | Published - Dec 1 2011 |
| Externally published | Yes |
| Event | 2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011 - Jeju, Korea, Republic of Duration: Oct 18 2011 → Oct 21 2011 |
Other
| Other | 2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011 |
|---|---|
| Country | Korea, Republic of |
| City | Jeju |
| Period | 10/18/11 → 10/21/11 |
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ASJC Scopus subject areas
- Materials Science(all)
Cite this
Modeling and simulation of zinc oxide nanowire field effect transistor biosensor. / Gomez, Jorge L.; Tigli, Onur.
2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011. 2011. p. 412-415 6155389.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Modeling and simulation of zinc oxide nanowire field effect transistor biosensor
AU - Gomez, Jorge L.
AU - Tigli, Onur
PY - 2011/12/1
Y1 - 2011/12/1
N2 - We are presenting a three-dimensional mathematical model and simulation for zinc-oxide nanowire field effect transistor (ZnO NW-FET) biosensor for detecting streptavidin/biotin binding. Implementing previously performed physical vapor deposition (PVD) techniques, ZnO NWs were synthesized with diameters in the range of 50-120 nm and lengths of 2-7.1 μm [5]. Our model is developed by using these dimensions and incorporating a spherical molecule model with uniform charge distribution that is immersed in a solvent with mobile univalent ions as developed in [1]. Applying Poisson-Boltzmann equation for boundary and continuity conditions, expression for the electrostatic potential distribution is obtained. This distribution is used to obtain the gate voltage and develop the I-V curves for ZnO NW-FET when used as a biosensor. In the saturation region, the I-V curves demonstrate that small changes in the gate voltage leads to exponentially larger changes in the drain current and allows for single biomolecule detection.
AB - We are presenting a three-dimensional mathematical model and simulation for zinc-oxide nanowire field effect transistor (ZnO NW-FET) biosensor for detecting streptavidin/biotin binding. Implementing previously performed physical vapor deposition (PVD) techniques, ZnO NWs were synthesized with diameters in the range of 50-120 nm and lengths of 2-7.1 μm [5]. Our model is developed by using these dimensions and incorporating a spherical molecule model with uniform charge distribution that is immersed in a solvent with mobile univalent ions as developed in [1]. Applying Poisson-Boltzmann equation for boundary and continuity conditions, expression for the electrostatic potential distribution is obtained. This distribution is used to obtain the gate voltage and develop the I-V curves for ZnO NW-FET when used as a biosensor. In the saturation region, the I-V curves demonstrate that small changes in the gate voltage leads to exponentially larger changes in the drain current and allows for single biomolecule detection.
UR - http://www.scopus.com/inward/record.url?scp=84860440686&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84860440686&partnerID=8YFLogxK
U2 - 10.1109/NMDC.2011.6155389
DO - 10.1109/NMDC.2011.6155389
M3 - Conference contribution
AN - SCOPUS:84860440686
SN - 9781457721397
SP - 412
EP - 415
BT - 2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011
ER -