Electrical Conductivity of Ethylene Glycol Based Nanofluids with Different Types of Thulium Oxide Nanoparticles
J. Fala, A. Sidorowicz b and G. Żyła a
aDepartment of Physics and Medical Engineering, Rzeszów University of Technology, Rzeszów, Poland
bInstitute of Electronic Materials Technology, Warsaw, Poland
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The paper presents experimental investigation on electrical conductivity of thulium oxides-ethylene glycol (Tm2O3-EG) nanofluids based on nanoparticles with three different sizes, and prepared in different conditions. Nanofluids were prepared with two-step method with use of the nanoparticles obtained by precipitation method. Measurements were conducted at constant temperature 293.15 K for various mass concentrations from 0% to 20% with 5% step. The electrical conductivity was measured using conductivity meter MultiLine 3410 (WTW GmBH, Weilheim, Germany) and temperature was stabilized in a water bath MLL 547 (AJL Electronic, Cracow, Poland). The results indicate that increase in mass concentration of nanoparticles in base fluid causes increase in electrical conductivity of Tm2O3-EG nanofluids. The enhancement in electrical conductivity of nanosuspensions of thulium oxide is dependent on particle size.

DOI: 10.12693/APhysPolA.132.146
PACS numbers: 74.25.F-, 72.15.Cz, 72.60.+g, 73.63.-b