Post-Grant Reports


Student-Faculty Collaborative Research Grant Report

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Biological and Chemical Physics | Physics


Graphene, an atomically thin form of carbon, has the useful property that its electrical resistance can change dramatically by the presence of external electric fields. Because biological systems interact through electrical impulses, graphene shows promise as a biological sensor. It has been found, however, that the mobility of graphene falls dramatically when measured in a liquid environment such as those of biological systems. Mobility is a quantity that describes how charges move through a graphene sheet in the presence of fields. Lower mobility implies that the inherent resistance of graphene will be high; therefore, sensitivity of changes to external fields in low mobility devices will also be low.

Therefore, this work was to measure mobility in liquid gated graphene field effect (GFET) devices. In addition, different variables were explored to help determine techniques to improve mobility in these devices.


This research was conducted as part of a Linfield College Student-Faculty Collaborative Research Grant in 2014, funded by the Office of Academic Affairs.

The student collaborator was Christina Harmon.

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