期刊
OPTICS EXPRESS
卷 19, 期 15, 页码 14726-14734出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.19.014726
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资金
- Swedish Foundation for Strategic Research (SSF)
- Swedish Research Council (VR)
We experimentally demonstrate that a metamaterial nanostructure can have a localized heating response owing to plasmonic resonances in the near-infrared wavelength range (from 1.5 to 2 mu m). With a broadband nanosecond-pulse light, the temperature of composing gold particles in the nanostructure can be easily increased to over 900K within only several nanoseconds, resulting in re-shaping of the particles. The photothermal effect is elaborated with finite-element based numerical simulations. The absorption resonance can in principle be tailored with a great freedom by choosing appropriate metamaterial parameters. The light-induced heating in an artificial metamaterial can be potentially used for all-optical acute temperature tuning in a micro-environment, which may open new frontiers especially in nanotechnology and biotechnology. (C) 2011 Optical Society of America
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