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Download Hi-Res ImageDownload to MS-PowerPointCite This:J. Phys. Chem. C 2020, 124, 31, 17204-17210
RETURN TO ISSUEPREVC: Plasmonics; Optic...C: Plasmonics; Optical, Magnetic, and Hybrid MaterialsNEXT

Thermoplasmonics of Ag Nanoparticles in a Variable-Temperature Bath

Cite this: J. Phys. Chem. C 2020, 124, 31, 17204–17210
Publication Date (Web):July 13, 2020
https://doi.org/10.1021/acs.jpcc.0c04085
Copyright © 2020 American Chemical Society
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    Abstract

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    Silver represents, by and large, the best plasmonic metal available, due to its very low optical losses in a broad photon-energy range encompassing all the visible optical spectrum. Its performances are, more often than not, severely hampered by the presence of a few-nanometer thick surface-tarnish layer; thermal annealing under high-vacuum (HV) conditions may however lead to its decomposition, thereby allowing to attain the clean-metal response. Here, we report an experimental investigation of the temperature dependence of the plasmonic response of Ag nanoparticles, either clean or tarnished, by means of in situ optical spectroscopies under HV conditions. For tarnished nanoparticles, we observed the temperature dynamics of thermal decomposition of the contamination layer in real time and compared it with the corresponding behavior of spatially extended, flat surfaces. For clean Ag nanoparticles we witness instead a remarkable temperature invariance of the localized-plasmon response, indicating Ag as a potential candidate for temperature-invariant thermoplasmonics applications.

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.jpcc.0c04085.

    • X-ray photoemission survey spectra of Ag NPs and bulk Ag; temperature-dependent absorption spectra of Ag NPs at all intermediate temperatures in the experimental range; temperature-dependent SE spectra (experimental and best-fit) at all intermediate temperatures in the experimental range; AFM images of the flat reference Ag film (PDF)

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    Cited By

    This article is cited by 4 publications.

    1. Federico Pini, Roberto Pilot, Gloria Ischia, Stefano Agnoli, Vincenzo Amendola. Au–Ag Alloy Nanocorals with Optimal Broadband Absorption for Sunlight-Driven Thermoplasmonic Applications. ACS Applied Materials & Interfaces 2022, 14 (25) , 28924-28935. https://doi.org/10.1021/acsami.2c05983
    2. Victor K. Pustovalov. Optical Properties of Nanoparticles Dispersed in Ambient Medium and their Dependences on Temperature. Current Nanomaterials 2023, 8 (3) , 233-258. https://doi.org/10.2174/2405461508666221102090945
    3. Marzia Ferrera, Lorenzo Ramò, Domenica Convertino, Giorgio Orlandini, Simona Pace, Ilya Milekhin, Michele Magnozzi, Mahfujur Rahaman, Dietrich R. T. Zahn, Camilla Coletti, Maurizio Canepa, Francesco Bisio. Optical Response of CVD-Grown ML-WS2 Flakes on an Ultra-Dense Au NP Plasmonic Array. Chemosensors 2022, 10 (3) , 120. https://doi.org/10.3390/chemosensors10030120
    4. Lasse K. Sørensen, Daniil E. Khrennikov, Valeriy S. Gerasimov, Alexander E. Ershov, Maxim A. Vysotin, Susanna Monti, Vadim I. Zakomirnyi, Sergey P. Polyutov, Hans Ågren, Sergey V. Karpov. Thermal degradation of optical resonances in plasmonic nanoparticles. Nanoscale 2022, 14 (2) , 433-447. https://doi.org/10.1039/D1NR06444D
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