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Güell-Grau P, Pi F, Villa R, et al. Elastic plasmonic-enhanced Fabry-Perot cavities with ultrasensitive stretching tunability. Adv Mater. 2021;e2106731doi: 10.1002/adma.202106731.
Güell-Grau, P., Pi, F., Villa, R., Eskilson, O., Aili, D., Nogués, J., Sepúlveda, B., & Alvarez, M. (2021). Elastic plasmonic-enhanced Fabry-Perot cavities with ultrasensitive stretching tunability. Advanced materials (Deerfield Beach, Fla.), e2106731. https://doi.org/10.1002/adma.202106731
Güell-Grau, Pau, et al. "Elastic plasmonic-enhanced Fabry-Perot cavities with ultrasensitive stretching tunability." Advanced materials (Deerfield Beach, Fla.) vol. (2021): e2106731. doi: https://doi.org/10.1002/adma.202106731
Güell-Grau P, Pi F, Villa R, Eskilson O, Aili D, Nogués J, Sepúlveda B, Alvarez M. Elastic plasmonic-enhanced Fabry-Perot cavities with ultrasensitive stretching tunability. Adv Mater. 2021 Dec 04;e2106731. doi: 10.1002/adma.202106731. Epub 2021 Dec 04. PMID: 34862830.
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Adv Mater. 2021 Dec 04;e2106731. doi: 10.1002/adma.202106731. Epub 2021 Dec 04.

Elastic plasmonic-enhanced Fabry-Perot cavities with ultrasensitive stretching tunability.

Advanced materials (Deerfield Beach, Fla.)

Pau Güell-Grau, Francesc Pi, Rosa Villa, Olof Eskilson, Daniel Aili, Josep Nogués, Borja Sepúlveda, Mar Alvarez

Affiliations

  1. Instituto de Microelectrónica de Barcelona (IMB-CNM, CSIC), Campus UAB, Bellaterra, 08193, Barcelona, Spain.
  2. Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain.
  3. Networking Research Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain.
  4. Departament de Física, Facultat de Ciències, Universitat Autònoma de Barcelona, Bellaterra, 08193, Barcelona, Spain.
  5. Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology, Linköping University, Linköping, 581 83, Sweden.
  6. ICREA, Pg. Lluís Companys 23, 08010, Barcelona, Spain.

PMID: 34862830 DOI: 10.1002/adma.202106731

Abstract

The emerging stretchable photonics field faces challenges like the robust integration of optical elements into elastic matrices or the generation of large opto-mechanical effects. Here we demonstrate the first stretchable plasmonic enhanced and wrinkled Fabry-Perot cavities, which are composed of self-embedded arrays of Au nanostructures at controlled depths into elastomer films. The novel self-embedding process is triggered by the Au nanostructures catalytic activity, which locally increases the polymer curing rate, thereby inducing a mechanical stress that simultaneously pulls the Au nanostructures into the polymer and forms a wrinkled skin layer. This geometry yields unprecedented opto-mechanical effects produced by the coupling of the broad plasmonic modes of the Au nanostructures and the Fabry-Perot modes, which are modulated by the wrinkled optical cavity. As a result, film stretching induces drastic changes in both the spectral position and intensity of the plasmonic enhanced Fabry-Perot resonances due to the simultaneous cavity thickness reduction and cavity wrinkle flattening, thus increasing the cavity finesse. We exploit these opto-mechanical effects to demonstrate new strain sensing approaches, achieving a strain detection limit of 0.006%, i.e., 16-fold lower than current optical strain detection schemes. This article is protected by copyright. All rights reserved.

This article is protected by copyright. All rights reserved.

Keywords: Fabry-Perot; Plasmon enhanced; catalytic activity; self-embedded; wrinkle surface

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