Controlling the Dirac point voltage of graphene by mechanically bending the ferroelectric gate of a graphene field effect transistor

2019 ◽  
Vol 6 (2) ◽  
pp. 302-310 ◽  
Author(s):  
Guangliang Hu ◽  
Jingying Wu ◽  
Chunrui Ma ◽  
Zhongshuai Liang ◽  
Weihua Liu ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistor ◽  
Dirac Point ◽  
Flexoelectric Effect ◽  
Graphene Field Effect Transistor ◽  
Graphene Doping ◽  
Effect Transistor

The linear shift in VDirac of a flexible GFET, caused by the flexoelectric effect of a PLZT gate, makes it enormously useful for both tuning the graphene doping state and detecting bending curvature.

Microwave switching of graphene field effect transistor at and far from the Dirac point

2010 ◽  
Vol 96 (10) ◽  
pp. 103105 ◽  
Author(s):  
G. Deligeorgis ◽  
M. Dragoman ◽  
D. Neculoiu ◽  
D. Dragoman ◽  
G. Konstantinidis ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistor ◽  
Dirac Point ◽  
Graphene Field Effect Transistor ◽  
Effect Transistor

scholarly journals Dirac-Point Shift by Carrier Injection Barrier in Graphene Field-Effect Transistor Operation at Room Temperature

2018 ◽  
Vol 10 (13) ◽  
pp. 10618-10621
Author(s):  
Sungsik Lee ◽  
Arokia Nathan ◽  
Jack Alexander-Webber ◽  
Philipp Braeuninger-Weimer ◽  
Abhay A. Sagade ◽  
...  
Keyword(s):  
Field Effect ◽  
Room Temperature ◽  
Field Effect Transistor ◽  
Dirac Point ◽  
Carrier Injection ◽  
Graphene Field Effect Transistor ◽  
Effect Transistor ◽  
Injection Barrier

scholarly journals Detection of Alpha-Fetoprotein in Hepatocellular Carcinoma Patient Plasma with Graphene Field-Effect Transistor

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 4032 ◽  
Author(s):  
Dae Kim ◽  
Hong Oh ◽  
Woo Park ◽  
Dong Jeon ◽  
Ki Lim ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Field Effect ◽  
Field Effect Transistor ◽  
Dirac Point ◽  
Alpha Fetoprotein ◽  
Detection Sensitivity ◽  
Practical Applications ◽  
Graphene Field Effect Transistor ◽  
Channel Surface ◽  
Effect Transistor

The detection of alpha-fetoprotein (AFP) in plasma is important in the diagnosis of hepatocellular carcinoma (HCC) in humans. We developed a biosensor to detect AFP in HCC patient plasma and in a phosphate buffer saline (PBS) solution using a graphene field-effect transistor (G-FET). The G-FET was functionalized with 1-pyrenebutyric acid N-hydroxysuccinimide ester (PBASE) for immobilization of an anti-AFP antibody. AFP was detected by assessing the shift in the voltage of the Dirac point (ΔVDirac) after binding of AFP to the anti-AFP-immobilized G-FET channel surface. This anti-AFP-immobilized G-FET biosensor was able to detect AFP at a concentration of 0.1 ng mL−1 in PBS, and the detection sensitivity was 16.91 mV. In HCC patient plasma, the biosensor was able to detect AFP at a concentration of 12.9 ng mL−1, with a detection sensitivity of 5.68 mV. The sensitivity (ΔVDirac) depended on the concentration of AFP in either PBS or HCC patient plasma. These data suggest that G-FET biosensors could have practical applications in diagnostics.

scholarly journals Graphene field effect transistor as a radiation and photodetector

2012 ◽  
Author(s):  
Ozhan Koybasi ◽  
Isaac Childres ◽  
Igor Jovanovic ◽  
Yong P. Chen
Keyword(s):  
Field Effect ◽  
Field Effect Transistor ◽  
Graphene Field Effect Transistor ◽  
Effect Transistor

Towards a cleaner graphene surface in graphene field effect transistor via N,N-Dimethylacetamide

2016 ◽  
Vol 3 (9) ◽  
pp. 095011 ◽  
Author(s):  
Da-Cheng Mao ◽  
Song-Ang Peng ◽  
Shao-Qing Wang ◽  
Da-Yong Zhang ◽  
Jing-Yuan Shi ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistor ◽  
Graphene Surface ◽  
Graphene Field Effect Transistor ◽  
Effect Transistor

scholarly journals A graphene field-effect transistor as a molecule-specific probe of DNA nucleobases

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Nikolai Dontschuk ◽  
Alastair Stacey ◽  
Anton Tadich ◽  
Kevin J. Rietwyk ◽  
Alex Schenk ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistor ◽  
Specific Probe ◽  
Graphene Field Effect Transistor ◽  
Effect Transistor ◽  
Dna Nucleobases
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