Study of Nanoparticle-Decorated Graphene Hydrogen Gas Sensor
Student: Abayomi Omolewu
Degree: Ph.D., December 2020
Major Professor: Dr. Uche Wejinya & Dr. Ryan Tian
Physical & Chemical Sensors
Nanoscience & Engineering
- Demand for cleaner and more sustainable form of energy is driving research towards alternative energy sources and carrier.
- Hydrogen is one of the promising alternative energy carrier.
- Hydrogen is colorless, odorless, and has high tendency of leakage. Hence there is need for development of hydrogen gas sensors that meet DoE requirements.
Find correlation between hydrogen sensor parameters for synthesized nanoparticle decorated graphene and electron transport measurements.
- Graphene device done through mechanical exfoliation and e-beam lithography.
- Hall measurement carried for the longitudinal and hall resistance of the device to extract carrier density and carrier mobility
- Device fabrication of graphene hall bar for electrical characterization.
The electrical properties of the sample when extracted will help will the characterization of nano-particle decorated graphene on future
More electronic transport measurement for fabricated device
More AFM analysis of SDS functionalized CVD graphene
Explore the deposition of Aluminum oxide on CVD graphene before Pd/Pt nanoparticle deposition.
Fabrication of device from Pd/Pt decorated graphene