Limits...
Conductance modulation of charged lipid bilayer using electrolyte-gated graphene-field effect transistor.

Kiani MJ, Harun FK, Ahmadi MT, Rahmani M, Saeidmanesh M, Zare M - Nanoscale Res Lett (2014)

Bottom Line: Furthermore, changes in charged lipid membrane properties can be electrically detected by a graphene-based electrolyte-gated graphene field effect transistor (GFET).Monolayer graphene conductance as an electrical detection platform is suggested for neutral, negative, and positive electric-charged membrane.Finally, the proposed analytical model is compared with experimental data which indicates good overall agreement.

View Article: PubMed Central - HTML - PubMed

Affiliation: Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Skudai, Johor 81310, Malaysia ; Department of Electrical Engineering, Islamic Azad University, Yasooj branch, Yasooj 75916, Iran.

ABSTRACT
Graphene is an attention-grabbing material in electronics, physics, chemistry, and even biology because of its unique properties such as high surface-area-to-volume ratio. Also, the ability of graphene-based materials to continuously tune charge carriers from holes to electrons makes them promising for biological applications, especially in lipid bilayer-based sensors. Furthermore, changes in charged lipid membrane properties can be electrically detected by a graphene-based electrolyte-gated graphene field effect transistor (GFET). In this paper, a monolayer graphene-based GFET with a focus on the conductance variation caused by membrane electric charges and thickness is studied. Monolayer graphene conductance as an electrical detection platform is suggested for neutral, negative, and positive electric-charged membrane. The electric charge and thickness of the lipid bilayer (Q LP and L LP) as a function of carrier density are proposed, and the control parameters are defined. Finally, the proposed analytical model is compared with experimental data which indicates good overall agreement.

No MeSH data available.


Comparison between graphene conductance model and extracted experimental data[10]. (a) For negatively electric charges. (b) For positively electric charges.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4125348&req=5

Figure 7: Comparison between graphene conductance model and extracted experimental data[10]. (a) For negatively electric charges. (b) For positively electric charges.

Mentions: In FigureĀ 7a,b, each diagram clearly depicts the specific electric charge. For example, when graphene is coated with a negative charge, it is noteworthy that the model is closer to the experimental data; in the same manner, we can compare graphene coated with the positive charge as well. It is clearly shown that, by varying the electric charge through the electric charge factor, the G-Vg characteristic curve can be controlled.


Conductance modulation of charged lipid bilayer using electrolyte-gated graphene-field effect transistor.

Kiani MJ, Harun FK, Ahmadi MT, Rahmani M, Saeidmanesh M, Zare M - Nanoscale Res Lett (2014)

Comparison between graphene conductance model and extracted experimental data[10]. (a) For negatively electric charges. (b) For positively electric charges.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4125348&req=5

Figure 7: Comparison between graphene conductance model and extracted experimental data[10]. (a) For negatively electric charges. (b) For positively electric charges.
Mentions: In FigureĀ 7a,b, each diagram clearly depicts the specific electric charge. For example, when graphene is coated with a negative charge, it is noteworthy that the model is closer to the experimental data; in the same manner, we can compare graphene coated with the positive charge as well. It is clearly shown that, by varying the electric charge through the electric charge factor, the G-Vg characteristic curve can be controlled.

Bottom Line: Furthermore, changes in charged lipid membrane properties can be electrically detected by a graphene-based electrolyte-gated graphene field effect transistor (GFET).Monolayer graphene conductance as an electrical detection platform is suggested for neutral, negative, and positive electric-charged membrane.Finally, the proposed analytical model is compared with experimental data which indicates good overall agreement.

View Article: PubMed Central - HTML - PubMed

Affiliation: Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Skudai, Johor 81310, Malaysia ; Department of Electrical Engineering, Islamic Azad University, Yasooj branch, Yasooj 75916, Iran.

ABSTRACT
Graphene is an attention-grabbing material in electronics, physics, chemistry, and even biology because of its unique properties such as high surface-area-to-volume ratio. Also, the ability of graphene-based materials to continuously tune charge carriers from holes to electrons makes them promising for biological applications, especially in lipid bilayer-based sensors. Furthermore, changes in charged lipid membrane properties can be electrically detected by a graphene-based electrolyte-gated graphene field effect transistor (GFET). In this paper, a monolayer graphene-based GFET with a focus on the conductance variation caused by membrane electric charges and thickness is studied. Monolayer graphene conductance as an electrical detection platform is suggested for neutral, negative, and positive electric-charged membrane. The electric charge and thickness of the lipid bilayer (Q LP and L LP) as a function of carrier density are proposed, and the control parameters are defined. Finally, the proposed analytical model is compared with experimental data which indicates good overall agreement.

No MeSH data available.