Vázquez Lozano, Juan Enrique

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https://academica-e.unavarra.es/handle/2454/51554

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Vázquez Lozano

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Juan Enrique

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Ingeniería Eléctrica, Electrónica y de Comunicación

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ISC. Institute of Smart Cities

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0000-0001-6423-1949

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750427

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812225

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    PublicationOpen Access
    Synthesis and raman detection of 5-amino-2-mercaptobenzimidazole self-assembled monolayers in nanoparticle-on-a-mirror plasmonic cavity driven by dielectric waveguides
    (American Chemical Society, 2024) Redolat, Javier; Camarena-Pérez, María; Griol, Amadeu; Sinusia Lozano, Miguel; Gómez-Gómez, María Isabel; Vázquez Lozano, Juan Enrique; Miele, Ermanno; Baumberg, Jeremy J.; Martínez, Alejandro; Pinilla-Cienfuegos, Elena; Ingeniería Eléctrica, Electrónica y de Comunicación; Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza; Institute of Smart Cities - ISC
    Functionalization of metallic surfaces by molecular monolayers is a key process in fields such as nanophotonics or biotechnology. To strongly enhance light-matter interaction in such monolayers, nanoparticle-on-a-mirror (NPoM) cavities can be formed by placing metal nanoparticles on such chemically functionalized metallic monolayers. In this work, we present a novel functionalization process of gold surfaces using 5-amino-2-mercaptobenzimidazole (5-A-2MBI) molecules, which can be used for upconversion from THz to visible frequencies. The synthesized surfaces and NPoM cavities are characterized by Raman spectroscopy, atomic force microscopy (AFM), and advancing-receding contact angle measurements. Moreover, we show that NPoM cavities can be efficiently integrated on a silicon-based photonic chip performing pump injection and Raman-signal extraction via silicon nitride waveguides. Our results open the way for the use of 5-A-2MBI monolayers in different applications, showing that NPoM cavities can be effectively integrated with photonic waveguides, enabling on-chip enhanced Raman spectroscopy or detection of infrared and THz radiation.