Characterization of eco-friendly fluorescent nanoparticle-doped tracers for environmental sensing

Flavia Tauro, Emiliano Rapiti, Jafar F. Al-Sharab, Lucio Ubertini, Salvatore Grimaldi, Maurizio Porfiri

Research output: Contribution to journalArticle

Abstract

Particle tracers are extensively used in quantitative flow visualization and environmental sensing. In this paper, we provide a thorough characterization of the novel eco-friendly fluorescent particle tracers formulated in Tauro et al. (AIP Adv 3(3): 032108, 2013). The tracers are synthesized from natural beeswax and are functionalized by encapsulating nontoxic fluorophore nanoparticles in the beads' matrix through an inexpensive thermal procedure. Visibility and durability studies are conducted through a wide array of techniques to investigate the tracers' surface morphological microfeatures, crystal nature and size, chemical composition, fluorophore incorporation into the beeswax matrix, and fluorescence response under severe settings resembling exposure to natural environments. Our findings demonstrate that fluorescent nanoparticles ranging from 1.51 to 3.73 nm are homogeneously distributed in the superficial layer (12 nm) of the tracers. In addition, fluorescence emissions are observed up to 26 days of continuous exposure of the tracers to high energy radiation. To demonstrate the particles' use in environmental flow sensing, a set of proof of concept outdoor tests are conducted, in which image analysis tools are utilized for detecting the fluorescent tracers. Experimental results suggest that fluorescent microparticles deployed in high flow-rate flows (2 m/s) and under direct sunlight can be sensed through commercially available cameras (frame rate set to 30 Hz).

Original languageEnglish (US)
Article number1884
JournalJournal of Nanoparticle Research
Volume15
Issue number9
DOIs
StatePublished - 2013

Fingerprint

Fluorophores
Nanoparticles
tracers
Sensing
Fluorescence
nanoparticles
Flow visualization
Visibility
Image analysis
Flow Visualization
Durability
Cameras
Flow rate
Radiation
Image Analysis
Flow Rate
Crystals
Demonstrate
High Energy
Crystal

Keywords

  • Environmental sensing
  • Fluorescent nanoparticles
  • Microscopy
  • Tracer

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Modeling and Simulation
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering

Cite this

Characterization of eco-friendly fluorescent nanoparticle-doped tracers for environmental sensing. / Tauro, Flavia; Rapiti, Emiliano; Al-Sharab, Jafar F.; Ubertini, Lucio; Grimaldi, Salvatore; Porfiri, Maurizio.

In: Journal of Nanoparticle Research, Vol. 15, No. 9, 1884, 2013.

Research output: Contribution to journalArticle

Tauro, Flavia ; Rapiti, Emiliano ; Al-Sharab, Jafar F. ; Ubertini, Lucio ; Grimaldi, Salvatore ; Porfiri, Maurizio. / Characterization of eco-friendly fluorescent nanoparticle-doped tracers for environmental sensing. In: Journal of Nanoparticle Research. 2013 ; Vol. 15, No. 9.
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