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Micromachines 2017, 8(11), 321; https://doi.org/10.3390/mi8110321

Acousto-Plasmonic Sensing Assisted by Nonlinear Optical Interactions in Bimetallic Au-Pt Nanoparticles

1
Sección de Estudios de Posgrado e Investigación, Escuela Superior de Ingeniería Mecánica y Eléctrica Unidad Zacatenco, Instituto Politécnico Nacional, Ciudad de Mexico 07738, Mexico
2
Academia de Ciencias (Acústica), Escuela de Laudería, Instituto Nacional de Bellas Artes y Literatura, Querétaro 76000, Mexico
3
Escuela Superior de Ingeniería Química e Industrias Extractivas, Instituto Politécnico Nacional, Ciudad de Mexico 07738, Mexico
4
Centro de Investigación para los Recursos Naturales, Salaices, Chihuahua 33941, Mexico
*
Author to whom correspondence should be addressed.
Received: 30 September 2017 / Revised: 26 October 2017 / Accepted: 26 October 2017 / Published: 28 October 2017
(This article belongs to the Special Issue Medical Microdevices and Micromachines)
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Abstract

A strong influence of mechanical action in nonlinear optical transmittance experiments with bimetallic nanoparticles integrated by gold and platinum was observed. The nanostructured samples were synthesized by a sol-gel method and contained in an ethanol suspension. UV-VIS spectroscopy evaluations, Transmission electron microscopy studies and input-output laser experiments were characterized. A two-photon absorption effect was induced by nanosecond pulses at 532 nm wavelength with an important contribution from the plasmonic response of the nanomaterials. All-optical identification of acoustical waves was remarkably improved by optical nonlinearities. High sensitivity for instrumentation of mechano-optical signals sensing particular fluids was demonstrated by using a variable carbon dioxide incorporation to the system. View Full-Text
Keywords: two-photon absorption; acousto-optics; CO2 detection; surface plasmon resonance two-photon absorption; acousto-optics; CO2 detection; surface plasmon resonance
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Hurtado-Aviles, E.A.; Torres, J.A.; Trejo-Valdez, M.; Urriolagoitia-Sosa, G.; Villalpando, I.; Torres-Torres, C. Acousto-Plasmonic Sensing Assisted by Nonlinear Optical Interactions in Bimetallic Au-Pt Nanoparticles. Micromachines 2017, 8, 321.

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