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Full-Text Articles in Nanoscience and Nanotechnology
Anti-Stokes Fluorescence Imaging Of Microscale Thermal Fields In Thin Films, A. N. Kuzmin, A. Baev, A. V. Kachynski, Timothy S. Fisher, Ali Shakouri, P. N. Prasad
Anti-Stokes Fluorescence Imaging Of Microscale Thermal Fields In Thin Films, A. N. Kuzmin, A. Baev, A. V. Kachynski, Timothy S. Fisher, Ali Shakouri, P. N. Prasad
Birck and NCN Publications
We demonstrate that the in-plane thin film heat transport can be accurately mapped via confocal anti-Stokes fluorescence imaging using fluorescent dye probes and nanoheaters. We employ 3D finite elements analysis to evaluate the thermal conductivity of a control sample and to assess the validity of a point heat source approximation. We have found that this approximation is adequate with use of a tightly focused laser beam, providing a robust means for determining the thermal conductivity of a sample under investigation. (C) 2011 American Institute of Physics. [doi:10.1063/1.3606429]