Seminar: Friday, November 10, 2017, Dr. Sang-Hyun Oh


TITLE:                        Dynamic Nanogap Biosensors Toward Rapid Detection of Single Molecules

SPEAKER:                  Dr. Sang-Hyun Oh, University of Minnesota

DATE:                         Friday, November 10, 2017

TIME:                         10:00 am

LOCATION:                ECS 660



This presentation will show new approaches to design and fabricate nanogap plasmonic sensors that can rapidly trap biomolecules via dielectrophoresis and detect them with optical spectroscopies in the visible, near-infrared, or mid-infrared regime.  We use an unconventional fabrication scheme – atomic layer lithography – to create gaps as narrow as 1 nm in metal films using atomic layer deposition, enabling high-throughput wafer-scale production.  The resulting nanogap structure can be used concurrently as electrodes for dielectrophoretic sample concentration and highly enhancing substrates for surface-enhanced spectroscopies.  We show a variety of resonant nanogap structures that can be used to detect nanoparticles, proteins, and DNA molecules at ultralow concentrations.

Seminar Notice