Abstract

In the measurement of the diffusion coefficient by digital holographic interferometry, the conformity between the experiment and the ideal physical model is lacking analysis. Two data processing methods are put forward to overcome this problem. By these methods, it is found that there is obvious asymmetry in the experiment and the asymmetry is becoming smaller with time. Besides, the initial time for diffusion cannot be treated as a constant throughout the whole experiment. This means that there is a difference between the experiment and the physical model. With these methods, the diffusion coefficient of KCl in water at 0.33mol/L and 25°C is measured. When the asymmetry is ignored, the result is 1.839×109m2/s, which is in good agreement with the data in the literature. Because the asymmetry is becoming smaller with time, the experimental data in the latter time period conforms to the ideal physical model. With this idea, a more accurate diffusion coefficient is 2.003×109m2/s, which is about 10% larger than the data in the literature.

© 2015 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Development of measuring diffusion coefficients by digital holographic interferometry in transparent liquid mixtures

M.G. He, S. Zhang, Y. Zhang, and S. G. Peng
Opt. Express 23(9) 10884-10899 (2015)

Double liquid-core cylindrical lens utilized to measure liquid diffusion coefficient

Weidong Meng, Yan Xia, Fangxi Song, and Xiaoyun Pu
Opt. Express 25(5) 5626-5640 (2017)

Diffusivity studies of transparent liquid solutions by use of digital holographic interferometry

Arun Anand, Vani K. Chhaniwal, and C. S. Narayanamurthy
Appl. Opt. 45(5) 904-909 (2006)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (11)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (8)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (14)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription