Plasmonic Nanostructures for SERS Biosensing and Optoelectronic Devices

April 12, 2018

Thursday, April 12, 2018
Dr. Qiuming Yu
University of Washington
2:00 - 3:00pm
SEH, Lehman Auditorium



Plasmonic nanostructures containing subwavelength metallic nanoholes and nanodiscs can greatly enhance the local electric fields in the vicinity of metallic nanostructures due to localized surface plasmon resonances (LSPRs) arisen by the coherent oscillation of free conduction electrons of metal excited by incident light. This fascinating optical property has led to a variety of applications ranging from enhancing vibrational spectroscopy for sensitive chemical and biological detection and sensing to manipulating and enhancing light transmission, absorption, and emission for photonic and optoelectronic devices. In this presentation, I will talk about the novel plasmonic nanostructure arrays developed in our group for sensitive and reproducible biological detection and sensing using surface-enhanced Raman spectroscopy (SERS) and for replacing indium tin oxide (ITO) as a transparent electrode for photovoltaic devices and UV photodetectors. We conducted finite-difference time-domain (FDTD) electromagnetic simulations to design plasmonic nanostructures and utilized a variety of nanofabrication techniques to make the nanostructures for SERS biosensing or for rigid, flexible or conformable optoelectronic devices.



Qiuming Yu is a research professor in the Chemical Engineering Department at the University of Washington. She received her BS and MS degrees from the Department of Chemistry at Nanjing University in China. She earned her Ph.D. degree from the Department of Chemical Engineering at Cornell University and did postdoctoral research at the Micro-devices Laboratory at the NASA Jet Propulsion Laboratory / California Institute of Technology. Her research focuses on plasmonic nanostructures and semiconductor nanomaterials for chemical and biological sensors and optoelectronic devices.