In Situ Observation of Low‐Power Nano‐Synaptic Response in Graphene Oxide Using Conductive Atomic Force Microscopy

Small ◽  
2021 ◽  
pp. 2101100
Author(s):  
Fei Hui ◽  
Peisong Liu ◽  
Stephen A. Hodge ◽  
Tian Carey ◽  
Chao Wen ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Graphene Oxide ◽  
Low Power ◽  
In Situ Observation ◽  
Synaptic Response ◽  
Conductive Atomic Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force

Study of THF Hydrate Crystallization Based on In Situ Observation with Atomic Force Microscopy

2020 ◽  
Vol 20 (5) ◽  
pp. 2921-2929
Author(s):  
Xin Huang ◽  
Yajun Deng ◽  
Zhenchao Li ◽  
Wenjiu Cai ◽  
Lijuan Gu ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
In Situ Observation ◽  
Force Microscopy ◽  
Atomic Force

In situ observation on Au(100) surface in molten EMImBF4 by electrochemical atomic force microscopy (EC-AFM)

2003 ◽  
Vol 546 (1) ◽  
pp. L785-L788 ◽  
Author(s):  
K. Kubo ◽  
N. Hirai ◽  
T. Tanaka ◽  
S. Hara
Keyword(s):  
Atomic Force Microscopy ◽  
In Situ Observation ◽  
Force Microscopy ◽  
Atomic Force

scholarly journals Measurements of the Electrical Conductivity of Monolayer Graphene Flakes Using Conductive Atomic Force Microscopy

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2575
Author(s):  
Soomook Lim ◽  
Hyunsoo Park ◽  
Go Yamamoto ◽  
Changgu Lee ◽  
Ji Won Suk
Keyword(s):  
Electrical Conductivity ◽  
Atomic Force Microscopy ◽  
Graphene Oxide ◽  
Monolayer Graphene ◽  
Synthesis Methods ◽  
Clear Understanding ◽  
Conductive Atomic Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Graphene Flakes

The intrinsic electrical conductivity of graphene is one of the key factors affecting the electrical conductance of its assemblies, such as papers, films, powders, and composites. Here, the local electrical conductivity of the individual graphene flakes was investigated using conductive atomic force microscopy (C-AFM). An isolated graphene flake connected to a pre-fabricated electrode was scanned using an electrically biased tip, which generated a current map over the flake area. The current change as a function of the distance between the tip and the electrode was analyzed analytically to estimate the contact resistance as well as the local conductivity of the flake. This method was applied to characterize graphene materials obtained using two representative large-scale synthesis methods. Monolayer graphene flakes synthesized by chemical vapor deposition on copper exhibited an electrical conductivity of 1.46 ± 0.82 × 106 S/m. Reduced graphene oxide (rGO) flakes obtained by thermal annealing of graphene oxide at 300 and 600 °C exhibited electrical conductivities of 2.3 ± 1.0 and 14.6 ± 5.5 S/m, respectively, showing the effect of thermal reduction on the electrical conductivity of rGO flakes. This study demonstrates an alternative method to characterizing the intrinsic electrical conductivity of graphene-based materials, which affords a clear understanding of the local properties of individual graphene flakes.

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