Characterization of silicon dioxide nanofluids using the fiber optic sensor

• Grant number: 17/06190-7
• Support type: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): July 01, 2017
• Effective date (End): June 30, 2018
• Field of knowledge: Engineering - Mechanical Engineering
• Principal Investigator: Eric Fujiwara
• Grantee: Matheus Kaue Gomes
• Home Institution: Faculdade de Engenharia Mecânica (FEM). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

Nanofluids are characterized by stable suspensions of nanoparticles in a base-fluid. They have numerous applications in a wide variety of areas, such as in the chemical, energy, electronics and pharmaceutical industries, and in biomedicine, since the electromagnetic, optical and physico-chemical properties of colloid can be controlled based on the characteristics of the Dispersed nanostructures and in the base fluid. In this way, feasible techniques both in cost and in time to determine the aspects of the nanofluids appear as primordial in the development of this scientific front. Based on these circumstances, the project seeks, through the use of a fiber optic sensor, to determine the concentration and morphological parameters of silicon dioxide (SiO2) nanoparticles dispersed in water. The process begins with the production of silica nanoparticles by means of the flame aerosol method and the quartz nanoparticles obtained by high energy milling of ores. After mixing and stabilization in distilled water, the scattered light intensity will be monitored using the fiber optic refletometer and then processed using the Dynamic Light Scattering (DLS) method. Finally, the results will be correlated with varied parameters, such as morphology of the nanoparticles and concentration of the colloid, where an analytical methodology will be used to compare and validate the obtained results. At the end, it is expected to obtain an affordable and reliable technique to determine the mentioned aspects. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MARCO CÉSAR PRADO SOARES; MATHEUS KAUÊ GOMES; EGONT ALEXANDRE SCHENKEL; MATHEUS DOS SANTOS RODRIGUES; CARLOS KENICHI SUZUKI; LUCIMARA GAZIOLA DE LA TORRE; ERIC FUJIWARA. EVALUATION OF SILICA NANOPARTICLE COLLOIDAL STABILITY WITH A FIBER OPTIC QUASI-ELASTIC LIGHT SCATTERING SENSOR. Brazilian Journal of Chemical Engineering, v. 36, n. 4, p. 1519-1534, Dez. 2019. Web of Science Citations: 0.