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Tethering Luminescent Thermometry and Plasmonics: Light Manipulation to Assess Real-Time Thermal Flow in Nanoarchitectures Carlos D.S. Brites, Maria Cecilia Fuertes, Paula Angelomé, Eduardo David Martínez, Patricia Lima, Galo J. A. A. Soler-Illia, and Luis D. Carlos Nano Lett., Just Accepted Manuscript • DOI: 10.1021/acs.nanolett.7b01433 • Publication Date (Web): 07 Jul 2017 Downloaded from http://pubs.acs.org on July 8, 2017
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Tethering Luminescent Thermometry and Plasmonics: Light Manipulation to Assess Real-Time Thermal Flow in Nanoarchitectures Carlos D. S. Brites,† Maria Cecilia Fuertes, ‡,┴ Paula C. Angelomé,‡ Eduardo D. Martínez, ‡ Patrícia P. Lima,† Galo J. A. A. Soler-Illia§* Luís D. Carlos†* †
Departamento de Física and CICECO -Aveiro Institute of Materials, Universidade de Aveiro, Campus Santiago,3810–193 Aveiro, Portugal ‡ Gerencia Química, CNEA, CONICET. Av. Gral. Paz 1499 (B1650KNA) San Martín, Buenos Aires, Argentina ┴ Instituto Sabato, UNSAM, CNEA. Av. Gral. Paz 1499 (B1650KNA) San Martín, Buenos Aires, Argentina § INS. UNSAM, CONICET Av. 25 de Mayo 1021, San Martín, Buenos Aires, Argentina Corresponding Authors *
e-mail:
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[email protected] Abstract The past decade has seen significant progresses in the ability to fabricate new mesoporous thin films with highly controlled pore systems and emerging applications in sensing, electrical and thermal isolation, microfluidics, solar cells engineering, energy storage and catalysis. Heat management at the micro and nanoscale is a key issue in most of these applications, requiring a complete thermal characterization of the films that is commonly performed using electrical methods. Here, plasmonic-induced heating (through Au NPs) is combined with Tb3+/Eu3+ luminescence thermometry to measure the thermal conductivity of silica and titania mesoporous nanolayers. This innovative method yields values in accord with those measured by the evasive and destructive conventional 3ω-electrical method, simultaneously overcoming their main limitations, e.g., a mandatory deposition of additional isolating and metal layers over the films and the previous knowledge of the thermal contact resistance between the heating and the mesoporous layers.
Keywords: Mesoporous Thin Films, Luminescent Molecular Thermometry, Plasmonic Heating, Thermal Conductivity, Gold Nanoparticles C.D.S. Brites et al.
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The fabrication of highly integrated nanodevices with a series of interacting components has a profound impact in nanotechnology development, demanding, however, a complete thermal characterization, particularly in applications dealing with on-chip heat management, such as micro and nanoelectronics, microfluidics, catalysis, thermoelectric energy conversion and theranostic nanomedicine.1, 2 Further understand and engineering of nanoscale heat transfer processes is being driven by diverse experimental techniques to accurately measure the thermal dynamics occurring at the sub-micrometric scale, together with the advancements in computational simulations.1-7 The thermal conductivity of thin films (
