What is the advantage of bilayer graphene Biosensor over single layer ones? Does it perform better than Single layer graphene sensor? if so, what makes the difference between them?
Article Analytical Modeling of Bilayer Graphene Based Biosensor
The most important difference is that bilayer graphene has a bandgap of up to 0.25 eV, that depends on the magnitude of the electrical field applied in the direction perpendicular to the plane. Therefore bilayer graphene is a semiconductor and has different use in electronics, and as a sensor. For example, you can obtain better transistors than with single layer graphene. For some papers investigating bilayer graphene used in transistors (and comparison with single-layer graphene), check
Article Electric Field Control of Spin Rotation in Bilayer Graphene
Article On the Possibility of Tunable-Gap Bilayer Graphene FET
Article Ultralow-Voltage Bilayer Graphene Tunnel FET
Article Multiscale Modeling for Graphene-Based Nanoscale Transistors
Article BIlayer Graphene Transistors for Analog Electronics
Article A Semianalytical Model of Bilayer-Graphene Field-Effect Transistor
The most important difference is that bilayer graphene has a bandgap of up to 0.25 eV, that depends on the magnitude of the electrical field applied in the direction perpendicular to the plane. Therefore bilayer graphene is a semiconductor and has different use in electronics, and as a sensor. For example, you can obtain better transistors than with single layer graphene. For some papers investigating bilayer graphene used in transistors (and comparison with single-layer graphene), check
Article Electric Field Control of Spin Rotation in Bilayer Graphene
Article On the Possibility of Tunable-Gap Bilayer Graphene FET
Article Ultralow-Voltage Bilayer Graphene Tunnel FET
Article Multiscale Modeling for Graphene-Based Nanoscale Transistors
Article BIlayer Graphene Transistors for Analog Electronics
Article A Semianalytical Model of Bilayer-Graphene Field-Effect Transistor
I think it depends on the type of Bio-sensor and the mechanism you want to recognize the object. For example if you use zigzag graphene ribbon since its conductance at Fermi energy is very sensitive to the interaction with environment you can sense the Bio-molecule rapidly but if you have different Bio-molecules you can not recognize them from each other and you need to use armchair ribbon instead of zigzag ribbon since it can have band gap energy. Therefore by using graphene sheet with no band gap you may sense the object rapidly but by using two layer graphene sheet with band gap you may recognize different objects from each other better.
Best Regards
H.Simchi
Dear Giuseppe Iannaccone and Hamidreza Simchi have ever come a cross the journals in which the performance of a sensor is explained based on single and bilayer graphenes, if so, can you please give their references as those will help more for my research work.
Thank you.
have a great time n cheers...
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