Figure 5
From: Suspending Effect on Low-Frequency Charge Noise in Graphene Quantum Dot

Noise level of suspended and regular graphene nano-devices and its temperature dependence.
(a) The potential fluctuation Δε, as a function of VBG, obtained from five different graphene nano-devices, including both suspended and regular. All curves have been resized to the same x-axis scale for greater visibility. The black stars correspond to the result of GaAs devices described in Ref. 35. (b) A typical Coulomb peak measured at different temperatures. (c) The potential fluctuation Δε as a function of temperature.