Analytical

Plasmonic Materials for Chemical Analysis (#450)

The confinement of electromagnetic fields within metallic films and metallic nanoparticles is at the origin of the optical phenomena known as propagating or localized surface plasmons. Because the spectral position and intensity of these plasmons are affected by molecular adsorption, surface plasmons have been used successfully for the sensitive detection of various biomolecules. Furthermore, this electromagnetic confinement, being associated to large enhancements in local field intensity, often leads to massive improvements in the excitation rate of Raman-active species and in the emission signal intensity of fluorescent species. Finally, by taking advantage of the plasmonic resonant frequency's dependence on the composition, geometry, size and dielectric environment of the metallic nanoparticles and nanostructures, a plethora of different plasmonic molecular sensing nanostructures have been proposed in recent years for the sensitive detection of various trace amounts of genes, biomarkers, toxins, pathogens, tumor cells, etc. The symposium is intended as a forum for researchers to share the latest development in the design of plasmonic materials for chemical analysis and to show recent contributions to the fields of materials research, analytical chemistry, medical and point-of-care diagnostics. Invited speakers include M. Moskovits (UC Santa Barbara), Catherine Murphy (U. Illinois) and Y. Jin (Chinese Academy of Sciences), among others.
Last update: Dec 28, 2015