Graphene Transistor as a Probe for Streaming Potential

Details Graphene Transistor as a Probe for Streaming Potential Graphene Transistor as a Probe for Streaming Potential

2012-02-15

arxiv.org/abs/1202.3382v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures

Scientific paper

We explore the dependence of electrical transport in a graphene field effect transistor (GraFET) on the flow of the liquid within the immediate vicinity of that transistor. We find large and reproducible shifts in the charge neutrality point of GraFETs that are dependent on the fluid velocity and the ionic concentration. We show that these shifts are consistent with the variation of the local electrochemical potential of the liquid next to graphene that are caused by the fluid flow (streaming potential). Furthermore, we utilize the sensitivity of electrical transport in GraFETs to the parameters of the fluid flow to demonstrate graphene-based mass flow and ionic concentration sensing. We successfully detect a flow as small as~70nL/min, and detect a change in the ionic concentration as small as ~40nM.

Affiliated with

Also associated with

No associations

Rating

Graphene Transistor as a Probe for Streaming Potential does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Graphene Transistor as a Probe for Streaming Potential, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Graphene Transistor as a Probe for Streaming Potential will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-558216