Faculty Sponsor(s)
Michael Crosser
Location
Jereld R. Nicholson Library: Grand Avenue
Subject Area
Physics/Applied Physics
Description
Graphene is a single, atomic layer, hexagonal lattice with useful electrical properties. Discovered as a stable isolated sheet in the early 2000s, graphene field effect transistors (GFET) are an effective way to detect small changes in electrical activity. When an electrolytic fluid is placed on a GFET, a double layer capacitor can develop at the interface between the fluid and graphene. Surprisingly, this interface is sensitive to barometric pressure, making GFETs a viable device for measuring pressure changes. In this work we built a pressure vessel and placed GFETs inside to test the performance limits of graphene based on its environment.
Rights
This work is licensed under a Creative Commons Attribution-Noncommercial 4.0 License
Recommended Citation
Toeldte, Benedikt and Crosser, Michael S., "Detecting Changes in Pressure Using a Graphene Field Effect Transistor" (2019). Linfield University Student Symposium: A Celebration of Scholarship and Creative Achievement. Event. Submission 70.
https://digitalcommons.linfield.edu/symposium/2019/all/70
Detecting Changes in Pressure Using a Graphene Field Effect Transistor
Jereld R. Nicholson Library: Grand Avenue
Graphene is a single, atomic layer, hexagonal lattice with useful electrical properties. Discovered as a stable isolated sheet in the early 2000s, graphene field effect transistors (GFET) are an effective way to detect small changes in electrical activity. When an electrolytic fluid is placed on a GFET, a double layer capacitor can develop at the interface between the fluid and graphene. Surprisingly, this interface is sensitive to barometric pressure, making GFETs a viable device for measuring pressure changes. In this work we built a pressure vessel and placed GFETs inside to test the performance limits of graphene based on its environment.
