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BPN547: Eagle-Beak Nanoantenna as Dual Electric Field and Thermal Gradient Generator for Single Molecule SERS

Project ID BPN547
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Start Date Fri 2010-Jan-29 13:28:20
Last Updated Wed 2011-Aug-17 08:55:33
Abstract A nanoantenna, upon absorbing incident light, emits focused electric and thermal fields. Our proposed 'eagle-beak' nanoantenna generates strongly amplified electric fields (hot-spots) at its tip and along its edges. Also it is designed to utilize the two field gradients for preconcentration of target molecules around the hot-spots. Previously we demonstrated non-blinking single-molecule SERS with conventional Raman molecules with excellent enhancement factor of 10^14. Here, we expand its applications to Raman polarization studies as well as biomolecular detection (i.e. amyloid beta protein). Based on the examples, well-designed eagle-beak nanoantenna can provide clues to understand physcis of surface-enhanced Raman scattering, and expand its applications to various molecular sensing mechanism.
Status Continuing
Funding Source DARPA
IAB Research Area NanoPlasmonics, Microphotonics & Imaging
Researcher(s) SoonGweon Hong, Eric P. Lee, Brendan W. Turner
Advisor(s) Luke P. Lee
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