| AVS 55th International Symposium & Exhibition | |
| Biomaterial Interfaces | Thursday Sessions |
| Session BI-ThP |
| Session: | Biomaterial Interfaces Poster Session with Focus on Engineered Bio-Interfaces and Sensors |
| Presenter: | A. Passian, Oak Ridge National Laboratory |
| Authors: | R.H. Farahi, Oak Ridge National Laboratory A. Passian, Oak Ridge National Laboratory A.L. Lereu, Oak Ridge National Laboratory T.G. Thundat, Oak Ridge National Laboratory Y. Jones, Alcorn State University |
| Correspondent: | Click to Email |
Single particle thermo-optical properties are increasingly important in applications such as therapeutics, nano devices, and alternative energy sources. In these applications, the temperature dependent electronic characteristics play a role in the feasibility, efficiency, and the functionality of the intended system. We present an investigation of the thermal properties of gold nanoparticles on a quartz substrate using optical excitation of surface plasmons. The surface deformation, in the region of the localized optical modulation of the surface plasmons, is studied as a function of frequency, power, and polarization. A non-linear frequency and power dependence is observed for the nanostructure system as a result of the thermoplasmonic processes including the volumetric deformations. A threshold power for the observation of the modulation is estimated and is in good agreement with theoretical and computational results.