Contact Ken Knappenberger: klk@chem.fsu.edu, (850) 645-8617

1. Magnetoplasmonic nanoparticles: A Route to Predictive Energy Conversion Kenneth L. Knappenberger, Jr. Department of Chemistry, Florida State University and National High Magnetic Field Laboratory Experimental Energy Conversion Diagnostics Computational characterization Magnetoplasmonic nanoparticles Motivation and Specific Aims Nanoparticles often display strikingly different chemical and physical properties than their bulk counterparts. Perhaps more intriguingly, these properties vary widely with particle size and shape. One example exhibited in metal nanoparticles is the surface plasmon resonance (SPR). Hollow Gold Nanospheres (HGNs) can be used to extend the flexibility of device design based on plasmonic materials; the SPR spectral position can be tuned across the visible and near infrared region by varying the shell diameter/thickness aspect ratio. We provide experimental and computational evidence that interparticle electromagnetic coupling enhancement can be achieved using aggregates of HGNs. We also demonstrate that HGNs can be used as nanoscale temperature probes. • Specific Aims: • Develop multi-component nanoparticles • Develop time resolved spectroscopy instrumentation. • Quantitative analysis of magnetic convection in current and future fuel sources. Knappenberger and co-workers J. Am. Chem. Soc. 2009 , 131, 13892. Magneto-Optical Spectroscopy Deliverables • Determine nature of magnetic plasmon interactions • Quantitative analysis of field-dependent and environment-dependent heat transfer efficiency. • Determine interparticle effects (aggregation). Contact Ken Knappenberger: klk@chem.fsu.edu, (850) 645-8617