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Localized surface plasmon resonances in core-embedded heterogeneous nano-bowtie antenna

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Abstract

We theoretically investigated the localized surface plasmon resonances in core-embedded heterogeneous nano-bowtie antenna. It is proposed that spatial distribution and spectral position for Au–Ag nano-bowtie antenna can be unprecedentedly tuned with respect to core ingredient, bowtie size and filling refractive index of environment. The tunable spectral and spacial properties are attributed to the modified plasmon dipole interaction within the core-embedded nano-bowtie, which can be well manipulated by the size of nano-bowtie antenna as well as the core ingredient. The study provides basic understanding for tuning near-field properties in core-embedded heterobowties for a wide range of applications such as single-molecule fluorescence, SERS and photo-thermal therapy.

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Acknowledgments

This work is supported by the National Science Foundation of China under the Grant Nos. 51335008, 61275008 and 61176113, the Special-funded Programme on National Key Scientific Instruments and Equipment Development of China under the Grant No. 2012YQ12004706.

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Authors and Affiliations

  1. State Key Laboratory for Manufacturing Systems Engineering, Key Laboratory of Photonics Technology for Information, School of Electronics and Information Engineering, Xi’an Jiaotong University, Xi’an, 710049, China

    Guangqing Du, Qing Yang, Feng Chen, Yu Lu, Hao Bian, Jiale Yong & Xun Hou

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  1. Guangqing Du
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  2. Qing Yang
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  3. Feng Chen
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  4. Yu Lu
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  5. Hao Bian
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  6. Jiale Yong
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  7. Xun Hou
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Correspondence to Feng Chen.

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Du, G., Yang, Q., Chen, F. et al. Localized surface plasmon resonances in core-embedded heterogeneous nano-bowtie antenna. Appl. Phys. B 120, 47–51 (2015). https://doi.org/10.1007/s00340-015-6095-z

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  • DOI: https://doi.org/10.1007/s00340-015-6095-z

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