Pulsed laser annealing for metallic nanorods embedded in alumina

Yuyi Feng; Tobias Kemmer; Philipp Graus; Clayton A. Nemitz; Johannes Boneberg; Lingling Huang; Juan Liu; Yongtian Wang; Lukas Schmidt-Mende; Paul Leiderer

doi:10.1117/12.2505211

12 December 2018 Pulsed laser annealing for metallic nanorods embedded in alumina

Yuyi Feng, Tobias Kemmer, Philipp Graus, Clayton A. Nemitz, Johannes Boneberg, Lingling Huang, Juan Liu, Yongtian Wang, Lukas Schmidt-Mende, Paul Leiderer

Author Affiliations +

Proceedings Volume 10844, Advanced Laser Technology and Applications; 108440O (2018) https://doi.org/10.1117/12.2505211
Event: International Symposium on Optoelectronic Technology and Application 2018, 2018, Beijing, China

Abstract

Metallic nanorod metamaterials, arrays of vertically aligned nanorods embedded in an alumina matrix (diameter ~80 nm, length 100-250 nm, period ~113 nm), have recently emerged as a flexible platform for applications in photonics, opto-electronics and sensing. The optical constants for these nanostructured materials are directly associated with their crystallinity. Controlling the crystallinity of these metamaterials in a fast manner has presented a new challenge. Here we show a laser annealing with a pulsed Nd:YAG laser (λ = 532 nm, FWHM 15 ns) to rapidly change the crystallinity of the metallic nanorods. The small column X-Ray diffraction characterization shows that not only the crystallinity of the metallic nanorods is changed, but also that evaporation of the metal occurs with laser annealing.

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Yuyi Feng, Tobias Kemmer, Philipp Graus, Clayton A. Nemitz, Johannes Boneberg, Lingling Huang, Juan Liu, Yongtian Wang, Lukas Schmidt-Mende, and Paul Leiderer "Pulsed laser annealing for metallic nanorods embedded in alumina", Proc. SPIE 10844, Advanced Laser Technology and Applications, 108440O (12 December 2018); https://doi.org/10.1117/12.2505211

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