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URL:https://murmitoyen.com/events/vanille/udem/detail/790405-the-chemistry-
 of-coupled-nanostructures-zac-schultz-ohio-state-university
LOCATION:Université de Montréal - Pavillon J.-Armand-Bombardier\, 5155\, 
 chemin de la rampe \, Montréal\, QC\, Canada\, H3T 2B2
SUMMARY:The Chemistry of Coupled Nanostructures - Zac Schultz (Ohio State U
 niversity)
DESCRIPTION:The Chemistry of Coupled Nanostructures Zac SchultzDepartment o
 f chemistry and biochemistryOhio State University
\nAbstract: The Interact
 ion between light and noble metal nanostructures can generate intense elec
 tric fields with diverse chemical applications. A single nanostructure gen
 erally has a well-defined localized plasmon resonance spectrum\, which cor
 relates the activity of the conduction band electrons to optical frequenci
 es. These plasmon resonances become more complex and give rise to new beha
 vior when two or more nanostructures interact. In this presentation\, we w
 ill discuss the fabrication of nanomaterials and examine two distinct beha
 viors arising from the interaction\, or coupling\, between nanostructures.
  In chemical sensing\, coupled nanostructures have been shown to provide a
  sensitive label-free method of chemical analysis. Molecules that interact
  with these nanostructures give rise to distinctive and enhanced Raman sig
 nals\, which we use for nanoscale chemical imaging and trace analyte detec
 tion. Tip enhanced Raman (TERS) and surface enhanced Raman (SERS) experime
 nts are elucidating chemical signaling from protein receptors within cellu
 lar membranes. Coupling between plasmonic structures in a planar array hav
 e further enabled high sensitivity Raman detection in aqueous environments
 . We have demonstrated the ability to detect molecules in chemical separat
 ions and also at electrochemical interfaces. Distinct from isolated nanopa
 rticles\, results we have obtained illustrate the novel properties of coup
 led nanostructures\, such as electron tunneling and enhanced chemical reac
 tivity. These effects can drive catalysis and other chemical transformatio
 ns. Our work both explains these unusual observations and examines applica
 tions for these plasmonic materials.
\nBio: Zachary D. Schultz earned his 
 B.S. in Chemistry from the Ohio State University in 2000 and Ph.D. in Chem
 istry from the University of Illinois at Urbana-Champaign in 2005. He perf
 ormed his doctoral studies under the supervision of Prof. Andrew Gewirth u
 sing infrared-visible sum frequency generation spectroscopy to characteriz
 e electrochemical interfaces. Prof. Schultz was a National Research Counci
 l Postdoctoral Fellow at the National Institute of Standards and Technolog
 y (USA). His research at NIST was performed largely in collaboration with 
 Ira Levin at the National Institutes of Health (USA). Following his postdo
 ctoral training at NIST\, Dr. Schultz continued as a research fellow with 
 Dr. Levin at NIH using vibrational spectroscopy and microscopy to study bi
 omembrane systems. Prof. Schultz began his independent career as an assist
 ant professor of chemistry and biochemistry at the University of Notre Dam
 e in 2009\, and was promoted with tenure to associate professor in 2015. I
 n January of 2018\, Prof. Schultz moved his research program to Ohio State
 .
\nTo find more about Prof. Schultz's research\, you can consult his web 
 page.
\nCette conférence est présentée par le RQMP Versant Nord du D
 épartement de physique de l'Université de Montréal et de Génie physi
 que de la Polytechnique.
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