Resistance of graphene dispersion

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SUMMARY

The discussion centers on the unexpected zero conductance observed when applying graphene dispersion to a circuit board. Users clarify that graphene, while a conductor, requires a continuous structure to exhibit conductivity. Gaps in the dispersion prevent effective electron flow, necessitating a processing step to ensure proper bonding between graphene particles. A commercial supplier, Graphene Supermarket, provides conductive graphene dispersion that may address these issues.

PREREQUISITES
  • Understanding of graphene properties and its conductive nature
  • Knowledge of circuit board applications and measurements
  • Familiarity with the concept of continuous conductive pathways
  • Basic skills in handling and processing nanomaterials
NEXT STEPS
  • Research methods for improving graphene dispersion conductivity
  • Explore techniques for creating continuous graphene films
  • Learn about the processing requirements for graphene-based materials
  • Investigate commercial suppliers of conductive graphene products
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Researchers, electrical engineers, and materials scientists interested in nanomaterials and their applications in electronics will benefit from this discussion.

simsCity
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Hi,

I just got a small bottle of graphene dispersion (not GO) on ebay and put a small drop on a ciruit board as shown in the pic. I expected to measure a finite resistance because graphene is a conductor as much as I know. But it seems to have zero conductance from what I read on the multimeter. My question is: Why does it have zero conductance? Do I have to do a processing on the dispersion before it starts to be a good conductor?

Thanks in advance...
 

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It's not a conductor if there are gaps; you would need a continuous piece of graphene, or multiple pieces that are bonded together so that they conduct from one to the next.

Here is a commercial supplier, with some helpful notes:
https://graphene-supermarket.com/Conductive-Graphene-Dispersion-100.html
 
Thanks...
 

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