Colloquium
Location
Physics : 401
Date & Time
September 17, 2014, 3:30 pm – 4:30 pm
Description
TITLE: Engineered Nanostructures for Plasmonics-Based Spectroscopy
ABSTRACT: Nanostructures, as individual or coupled objects, may display properties that are different from those of macroscopic materials. Efforts to understand and utilize the optical properties of plasmonic nanostructures will be presented. New strategies for the fabrication of 1-D, 2-D, and 3-D plasmonic nanostructures by-design have enabled this research. Various surface-enhanced Raman spectroscopy (SERS) substrates ranging in area from 5•10-8 cm2 to 100 cm2 were engineering by the assembly of metallic nanospheres and nanocubes. These substrates are designed for both minimal fabrication cost and optimal sensitivity and reliability. Computational modeling provides insight to the unique physics that leads to the improved performance of these substrates. Approaches for 3-D chiral nanostructure fabrication are being explored to translate the improve sensitivity obtained in plasmon-mediated sensing to a larger range of spectroscopic techniques, in particular those that are sensitive to the chiral aspects of electromagnetic radiation and molecular structure.
Location: Physics, Room 401
ABSTRACT: Nanostructures, as individual or coupled objects, may display properties that are different from those of macroscopic materials. Efforts to understand and utilize the optical properties of plasmonic nanostructures will be presented. New strategies for the fabrication of 1-D, 2-D, and 3-D plasmonic nanostructures by-design have enabled this research. Various surface-enhanced Raman spectroscopy (SERS) substrates ranging in area from 5•10-8 cm2 to 100 cm2 were engineering by the assembly of metallic nanospheres and nanocubes. These substrates are designed for both minimal fabrication cost and optimal sensitivity and reliability. Computational modeling provides insight to the unique physics that leads to the improved performance of these substrates. Approaches for 3-D chiral nanostructure fabrication are being explored to translate the improve sensitivity obtained in plasmon-mediated sensing to a larger range of spectroscopic techniques, in particular those that are sensitive to the chiral aspects of electromagnetic radiation and molecular structure.
Location: Physics, Room 401