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Kuznetsov AS, Schäfer P, John W, et al. Enabling novel functionality in heavily doped ZnO:Ga by nanostructuring: an efficient plasmonic refractive index sensor. Nanotechnology. 2015;27(2):02LT02doi: 10.1088/0957-4484/27/2/02LT02.
Kuznetsov, A. S., Schäfer, P., John, W., Prasai, D., Sadofev, S., & Kalusniak, S. (2016). Enabling novel functionality in heavily doped ZnO:Ga by nanostructuring: an efficient plasmonic refractive index sensor. Nanotechnology, 27(2), 02LT02. https://doi.org/10.1088/0957-4484/27/2/02LT02
Kuznetsov, Alexander S, et al. "Enabling novel functionality in heavily doped ZnO:Ga by nanostructuring: an efficient plasmonic refractive index sensor." Nanotechnology vol. 27,2 (2016): 02LT02. doi: https://doi.org/10.1088/0957-4484/27/2/02LT02
Kuznetsov AS, Schäfer P, John W, Prasai D, Sadofev S, Kalusniak S. Enabling novel functionality in heavily doped ZnO:Ga by nanostructuring: an efficient plasmonic refractive index sensor. Nanotechnology. 2016 Jan 15;27(2):02LT02. doi: 10.1088/0957-4484/27/2/02LT02. Epub 2015 Dec 02. PMID: 26629968.
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Nanotechnology. 2016 Jan 15;27(2):02LT02. doi: 10.1088/0957-4484/27/2/02LT02. Epub 2015 Dec 02.

Enabling novel functionality in heavily doped ZnO:Ga by nanostructuring: an efficient plasmonic refractive index sensor.

Nanotechnology

Alexander S Kuznetsov, Peter Schäfer, Wilfred John, Deepak Prasai, Sergey Sadofev, Sascha Kalusniak

Affiliations

  1. Institut für Physik, Humboldt-Universität zu Berlin, Newtonstr. 15, D-12489 Berlin, Germany.

PMID: 26629968 DOI: 10.1088/0957-4484/27/2/02LT02

Abstract

We demonstrate a proof-of-concept refractive index sensor based on heavily doped ZnO:Ga nanostructured in a grating configuration, which supports free space excitation of propagating surface plasmons. The bulk sensitivity of the sensor of 4.9 × 10(3) nm per refractive index unit, achieved in the mid-infrared spectral range with the first grating prototype, surpasses that of the noble metal counterparts by three to four times. Sensing performance is discussed in the light of numerical simulations of the spatial profile of the near field of surface plasmon polaritons.

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