Utah State University
The Chemistry Department welcomes Lindsey Pruden, PhD Candidate, from Utah State University to the BYU-Idaho Campus. Lindsey will be presenting a seminar for all Chemistry, Biochemistry, Chemistry Education Majors and Faculty. The title of her seminar is "Plasmons: Why Should We Care?"
The seminar will be held in the Romney Building, Room 277, from 2:00-3:00 pm.
Refreshments will be served.
Title: Directed Assembly of Plasmonic Nanofilms
Abstract: There exist many approaches, such as lithography techniques and various solution phases conditions, that have been undertaken to develop noble metal nanoparticle films that possess nanovoids, ideal for plasmonic sensing. We have developed a simple and clean method to preparing free-standing, macroscale nanofilms composed of a monolayer of citrate-capped gold nanoparticles. These films can be captured and immobilized onto substrates that possess various topographies. The influence of drying conditions and substrate functionalization on film formation will be discussed in addition to investigations into the plasmonic properties of the films. Initial plasmonic investigations have indicated strong coupling of plasmons with additional localized surface plasmon resonance that is red-shifted when compared to the plasmonic response of uncoupled gold nanoparticles. Our initial studies for applications for the films involved surface-enhanced Raman scattering (SERS) which has indicated that the nanovoids present in the film are indeed accessible to target molecules, thus leading to enhanced signal detection. Lastly, our films possess a unique flexible nature that is particularly useful for application of nontraditional support materials that could be used for detection of chemical and biological agents.
- Available For Fall