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Zhao, Yiliang
Interdisciplinary Materials Science

Research Information

Ph.D. Candidate, Interdisciplinary Materials Science


Research Area
My current research focuses on using porous silicon as biosensing devices. The porous silicon waveguide with controllable pore diameter ranging from 15 to 60 nm provides advantages in achieving high sensitivity and selectivity with respect to biomolecule target detections. By in-situ synthesis of DNA inside porous silicon waveguide structure, the probe DNA density is increased and the same with the flexibility in defining the probe sequence. Hybridization of probe DNA inside p-type porous silicon waveguide with complementary DNA sequences results in a large blue shift of the resonant angle under prism coupling measurement. This phenomenon, caused by DNA-enhanced porous silicon corrosion, has promising applications for label-free DNA detections.

Ph.D. Thesis Advisor
Dr. Sharon Weiss, Electrical Engineering



Vanderbilt University