Plasmonic Nanoframes for Photothermal Energy Conversion

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• 作者：Ioannis H. Karampelas ; Kai Liu ; Fatema Alali ; Edward P. Furlani
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：April 7, 2016
• 年：2016
• 卷：120
• 期：13
• 页码：7256-7264
• 全文大小：481K
• ISSN：1932-7455

文摘

We study the photothermal behavior of laser-pulsed colloidal metallic nanoframe structures using three-dimensional (3D) photonic and thermofluidic computational models. The models predict the optical response of the nanoframe, photothermal transduction at plasmon resonance, heat transfer to the surrounding fluid, and the dynamics of nanobubble generation under conditions of superheating. We quantify for the first time the photothermal transduction of Au nanoframes as a function of their orientation with respect to the polarization of the incident field and, also, cooperative heating effects as a function of nanoframe spacing. We further demonstrate that laser illumination parameters and nanoframe properties can be tuned to control spatiotemporal heating and nanobubble dynamics.