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Measurement of the extinction coefficients of magnetic fluids.

Fang X, Xuan Y, Li Q - Nanoscale Res Lett (2011)

Bottom Line: The measuring principle and accuracy of the approach are analysed.The relative uncertainty of experimental data is less than 1.8%.The experimental results indicate that the extinction coefficient of magnetic fluids increases with increase of the volume fraction of suspended magnetic nanoparticles and the optical properties of the particle material have a significant effect on the extinction coefficient of the magnetic fluids.

View Article: PubMed Central - HTML - PubMed

Affiliation: School of Power Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China. ymxuan@mail.njust.edu.cn.

ABSTRACT
A novel spectral transmittance approach for measuring the extinction coefficient of magnetic fluids is proposed. The measuring principle and accuracy of the approach are analysed. Experiments are conducted to measure the extinction coefficient of magnetic fluids with different particle volume fractions. The relative uncertainty of experimental data is less than 1.8%. The experimental results indicate that the extinction coefficient of magnetic fluids increases with increase of the volume fraction of suspended magnetic nanoparticles and the optical properties of the particle material have a significant effect on the extinction coefficient of the magnetic fluids.

No MeSH data available.


Spectral transmittance of magnetic fluid films with different thicknesses and various particle volume fractions.
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Figure 5: Spectral transmittance of magnetic fluid films with different thicknesses and various particle volume fractions.

Mentions: The samples of water-based Fe3O4 magnetic fluid with three different particle volume fractions of 0.1, 0.3 and 0.5% were prepared by the chemical coprecipitation method. For each particle volume fraction, two magnetic fluid films with different thicknesses were prepared. At the ambient temperature of 25°C, the spectral transmittance of the magnetic fluid films was measured using a Lambda 950 spectrophotometer, and the experimental data are illustrated in Figure 5.


Measurement of the extinction coefficients of magnetic fluids.

Fang X, Xuan Y, Li Q - Nanoscale Res Lett (2011)

Spectral transmittance of magnetic fluid films with different thicknesses and various particle volume fractions.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211297&req=5

Figure 5: Spectral transmittance of magnetic fluid films with different thicknesses and various particle volume fractions.
Mentions: The samples of water-based Fe3O4 magnetic fluid with three different particle volume fractions of 0.1, 0.3 and 0.5% were prepared by the chemical coprecipitation method. For each particle volume fraction, two magnetic fluid films with different thicknesses were prepared. At the ambient temperature of 25°C, the spectral transmittance of the magnetic fluid films was measured using a Lambda 950 spectrophotometer, and the experimental data are illustrated in Figure 5.

Bottom Line: The measuring principle and accuracy of the approach are analysed.The relative uncertainty of experimental data is less than 1.8%.The experimental results indicate that the extinction coefficient of magnetic fluids increases with increase of the volume fraction of suspended magnetic nanoparticles and the optical properties of the particle material have a significant effect on the extinction coefficient of the magnetic fluids.

View Article: PubMed Central - HTML - PubMed

Affiliation: School of Power Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China. ymxuan@mail.njust.edu.cn.

ABSTRACT
A novel spectral transmittance approach for measuring the extinction coefficient of magnetic fluids is proposed. The measuring principle and accuracy of the approach are analysed. Experiments are conducted to measure the extinction coefficient of magnetic fluids with different particle volume fractions. The relative uncertainty of experimental data is less than 1.8%. The experimental results indicate that the extinction coefficient of magnetic fluids increases with increase of the volume fraction of suspended magnetic nanoparticles and the optical properties of the particle material have a significant effect on the extinction coefficient of the magnetic fluids.

No MeSH data available.