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(a) Schematic diagram of the device structure. (b) Optical image of the actual device used in this study.
(a) AFM of selectively deposited parylene C on exfoliated graphene. (b) TEM image showing parylene C and nickel electrode on exfoliated graphene.
(a) Raman spectra of exfoliated graphene before (black line) and after (redline) parylene deposition. (b) Resistance as a function of back-gate voltage (VBG). The black lines indicate sweeps without parylene and the red lines are sweeps with parylene
(a) Resistance as a function of top-gate voltage (VTG) with TG hysteresis of ∼0.02 V. (b) Measured total resistance RTOTAL (symbols) and simulated resistance (solid lines) vs. VTG-VDIRAC at the selected VBG biases.
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