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Plasmon-Induced Color and Photochemistry

Friday October 16, 2020
2:00 pm


 Presenter:  Paul Gieri
 Series:  Thesis and Dissertation Defenses
 Abstract:  In recent decades, metallic nanostructures have been extensively studied for a variety of applications due to the ability to support surface plasmons. These excitations, which consist of collective resonant oscillations of the conduction electrons, couple strongly to visible light, confining it into subwavelength volumes. In the first part of this talk, we study the optical response of metallic nanostructures supported by metallic substrates. We demonstrate that these systems support a charge transfer plasmon mode, whose frequency is primarily determined by the geometry of the contact area between the nanoparticle and the substrate. In the following part, we exploit this knowledge to explain the optical properties of daguerreotypes, the first successful photographic technology. In the last part of this talk, we demonstrate that, thanks to their plasmons, titanium nitride nanoparticles can act as efficient photocatalysts outperforming conventional plasmonic materials.
 Web Site:    https:/ / unm.zoom.us/ j/ 97718132348
 Location:  Zoom

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