Articles producció científica> Química Física i Inorgànica

Novel low-cost, compact and fast signal processing sensor for ratiometric luminescent nanothermometry

  • Identification data

    Identifier: PC:3332
    Handle: http://hdl.handle.net/20.500.11797/PC3332
  • Authors:

    Carvajal, M.
    Savchuk, O.
    Masons, J.
    Cascales, C
    Aguiló, M.
    Díaz, F.
  • Others:

    Author, as appears in the article.: Carvajal, M. ; Savchuk, O. ; Masons, J.; Cascales, C; Aguiló, M. ; Díaz, F.
    Department: Química Física i Inorgànica
    URV's Author/s: CARVAJAL MARTÍ, JOAN JOSEP; Savchuk, O. ; MASONS BOSCH, JAIME; Cascales, C; AGUILÓ DÍAZ, MAGDALENA; DÍAZ GONZÁLEZ, FRANCISCO MANUEL
    Keywords: Temperature sensor Non-invasive luminescence
    Abstract: We developed a new compact, low-cost and non-invasive temperature sensor based on a ratiometric luminescence technique. The setup included a commercial digital color sensor, which collects simultaneously signals in the blue, green and red regions of the electromagnetic spectrum, usually used to assess the quality of computer screens and used for the first time here as a sensor for luminescent thermometry, coupled to an optical system that focuses an excitation laser beam onto luminescent nanoparticles emitting at least in two of these electromagnetic regions, which simplifies considerably the design, alignment and measurement procedures of setups used up to now for the same purpose. The same optical system collects the emission arising from the luminescent nanoparticles and directs it towards the digital color sensor through a dichroic mirror. We probed the potentiality of this setup for luminescence thermometry in the biological range of temperatures using Er,Yb:NaYF4, and up to 673 K for microelectronic applications using Tm,Yb:GdVO4 up-converting nanoparticles. The thermal sensitivity obtained in both cases is similar to that previously reported for the same kinds of nanoparticles using conventional systems. This validates our setup for temperature measurements. Also, we developed new flexible and transparent polymer composites, in which we embedded upconversion luminescent nanoparticles of Er,Yb:NaYF4 in PDMS, a standard polymer for microfluidic devices used for biomedical studies, which allow fabricating thermometric microfluidic chips in which temperature can be determined using our setup. The thermal sensitivity for these composites is slightly smaller than that of the bare nanoparticles, bur still allowing for precise and fast temperature measurements.
    Research group: Física i Cristal.lografia de Materials Física i Cristal·lografia de Nanomaterials
    Thematic Areas: Química Química Chemistry
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0924-4247
    Author identifier: 0000-0002-4389-7298; ; 0000-0003-4325-6084; ; 0000-0001-6130-9579; 0000-0003-4581-4967
    Record's date: 2018-09-26
    Papper version: info:eu-repo/semantics/submittedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S0924424716304162
    Funding program: plan; Retos; MAT2013-47395-C4-4-R plan; Retos; TEC2014-55948-R plan; Retos; MAT2014-56607-R,
    Article's DOI: 10.1016/j.sna.2016.08.031
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2016
    Publication Type: Article Artículo Article
  • Keywords:

    Luminiscència
    Termometria--Aparells i instruments
    Temperature sensor
    Non-invasive
    luminescence
    Química
    Química
    Chemistry
    0924-4247
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