| Title |
Layer-dependent nanoscale electrical properties of graphene studied by conductive scanning probe microscopy
|
|---|---|
| Published in |
Discover Nano, August 2011
|
| DOI | 10.1186/1556-276x-6-498 |
| Pubmed ID | |
| Authors |
Shihua Zhao, Yi Lv, Xinju Yang |
| Abstract |
The nanoscale electrical properties of single-layer graphene (SLG), bilayer graphene (BLG) and multilayer graphene (MLG) are studied by scanning capacitance microscopy (SCM) and electrostatic force microscopy (EFM). The quantum capacitance of graphene deduced from SCM results is found to increase with the layer number (n) at the sample bias of 0 V but decreases with n at -3 V. Furthermore, the quantum capacitance increases very rapidly with the gate voltage for SLG, but this increase is much slowed down when n becomes greater. On the other hand, the magnitude of the EFM phase shift with respect to the SiO2 substrate increases with n at the sample bias of +2 V but decreases with n at -2 V. The difference in both quantum capacitance and EFM phase shift is significant between SLG and BLG but becomes much weaker between MLGs with a different n. The layer-dependent quantum capacitance behaviors of graphene could be attributed to their layer-dependent electronic structure as well as the layer-varied dependence on gate voltage, while the layer-dependent EFM phase shift is caused by not only the layer-dependent surface potential but also the layer-dependent capacitance derivation. |
X Demographics
The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Australia | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Scientists | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 41 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 2% |
| Unknown | 40 | 98% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 17 | 41% |
| Researcher | 7 | 17% |
| Professor > Associate Professor | 3 | 7% |
| Student > Bachelor | 2 | 5% |
| Professor | 2 | 5% |
| Other | 7 | 17% |
| Unknown | 3 | 7% |
| Readers by discipline | Count | As % |
|---|---|---|
| Physics and Astronomy | 14 | 34% |
| Materials Science | 12 | 29% |
| Engineering | 7 | 17% |
| Pharmacology, Toxicology and Pharmaceutical Science | 1 | 2% |
| Social Sciences | 1 | 2% |
| Other | 3 | 7% |
| Unknown | 3 | 7% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 22 August 2011.
All research outputs
#20,656,161
of 25,374,647 outputs
Outputs from Discover Nano
#691
of 1,146 outputs
Outputs of similar age
#110,612
of 133,396 outputs
Outputs of similar age from Discover Nano
#14
of 19 outputs
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