Limits...
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.


Comparison of the result measured by the experiment and that predicted by the MGT for extinction coefficients of magnetic fluids with different particle volume fractions.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC3211297&req=5

Figure 6: Comparison of the result measured by the experiment and that predicted by the MGT for extinction coefficients of magnetic fluids with different particle volume fractions.

Mentions: Based on the above mentioned procedure, the extinction coefficients of the magnetic fluids were calculated. The calculated extinction coefficients of magnetic fluids with different particle volume fractions are shown in Figure 6. Then, the relative uncertainties of the calculated extinction coefficients were estimated, and the results are shown in Table 2. Obviously, the extinction coefficient of the magnetic fluid and the data uncertainty vary with the change of particle volume fraction and the wavelength of the incident light. The largest relative uncertainty of experimental data is 1.73% at λ = 550 nm for 0.1% particle volume fraction.


Measurement of the extinction coefficients of magnetic fluids.

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

Comparison of the result measured by the experiment and that predicted by the MGT for extinction coefficients of magnetic fluids with different particle volume fractions.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 6: Comparison of the result measured by the experiment and that predicted by the MGT for extinction coefficients of magnetic fluids with different particle volume fractions.
Mentions: Based on the above mentioned procedure, the extinction coefficients of the magnetic fluids were calculated. The calculated extinction coefficients of magnetic fluids with different particle volume fractions are shown in Figure 6. Then, the relative uncertainties of the calculated extinction coefficients were estimated, and the results are shown in Table 2. Obviously, the extinction coefficient of the magnetic fluid and the data uncertainty vary with the change of particle volume fraction and the wavelength of the incident light. The largest relative uncertainty of experimental data is 1.73% at λ = 550 nm for 0.1% particle volume fraction.

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.