Document Type

Conference Proceeding

Publication Date



Nanofluids, Concentration, Refractive Index, Minimum Deviation Method


In a decade, nanofluids are a new kind of fluid that has rapid development and wide application in various fields. Especially, nanofluids as a heat transfer fluids in different industrial instead of the traditional heat transfer fluids such as water, oil, and ethylene glycol…etc. The nanofluids have consisted the nano-size metal or metal oxide pArticles with base fluids, the nanoparticles have a superior thermo property to enhance the heat transfer performance of based fluids. Concentration is an important factor that can be influenced by most of the thermal properties of nanofluids. In present, the concentration of nanofluids is predetermined, the amount of nanoparticle and the base fluids should be measured before the nanofluids preparation. However, no specific method for the measurement of nanofluids concentration in real-time and by non-contact method until the present. The Refractive index is an important parameter of material. It is also applied in much researches for material analysis such as material concentration analysis. The current study intended to experiment to find out the correlation between the refractive index and concentration of nanofluids for further development of the non-contact method for the measurement of nanofluids. In this study, a total of 10 different concentrations of Titania oxide (TiO2) nanofluid samples prepared for measurement of refractive index by the minimum deviation method and reference to Jenkin's proposed experiment setting in 1982. The results of this study presented that the refractive index value increased from 1.3411 to 1.3953 by increasing the TiO2 nanofluid concentration from 0.001% to 0.04%. The results of this works will be very helpful for further development of the method of measurement of the nanofluids concentration.

Source Publication

The 32nd International Conference and Expo on Nanosciences and Nanotechnology