Graphene Based Transistors and Supported Lipid Bilayer
Abstract
Graphene is an attractive material not only because of its electronic and optical properties, but also is considered for its potential applications in electronics and sensors. Owing to its unique structure and electrical property that are extremely sensitive to its surrounding environment, graphene-based field effect transistors(FETs) show significantly potential in various applications for chemicals and biomelocules sensors. Here, we have demonstrated three different works. In the first project, we present a simple, low-cost, large area, and contamination-free monolayer graphene field effect transistor for liquid-gated sensing applications. The graphene surface does not require any photoresist including the commonly used polymethylmethacrylate, thus avoiding possible contamination and mobility degradation. We also examine the effects of different etching solutions and concentrations on the Dirac point of graphene. With optimal device fabrication recipe, we demonstrate the devices capability to sense different KCl concentrations and pH values under liquid gating configuration. Additionally, using polydimethylsiloxane as substrates holds an advantage of enabling simple integration between microfluidic systems and graphene for chemical and biological sensor applications.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 31, 2015
- Accession Number
- AD1055531
Entities
People
- Yung Y. Wang
Organizations
- University of California, Irvine