Brownian motion in binary aqueous mixtures

Authors

  • Cindy Liza C. Esporlas National Institute of Physics, University of the Philippines Diliman
  • Giovanni A. Tapang National Institute of Physics, University of the Philippines Diliman
  • Caesar A. Saloma National Institute of Physics, University of the Philippines Diliman

Abstract

This paper investigates the effects of viscosity on the diffusion coefficient D and the mean square displacement MSD of a probe particle for different types of binary aqueous mixtures using empirical data of the bulk properties of substances. The mixing of different liquids or the addition of solid particles in a liquid changes the viscosity of the liquid thus affecting the behavior of the Brownian particle. The D and MSD are influenced by the temperature and viscosity of the liquid where the particle is immersed. Also, a nonĀ­linear relationship between D and the temperature and concentration of the mixture was observed. The measurement of D of a probe particle can be used in detecting the presence of impurities by comparing its values for pure and unknown liquids.

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Issue

Article ID

SPP-2009-4A-05

Section

Instrumentation and Optics

Published

2009-10-28

How to Cite

[1]
CLC Esporlas, GA Tapang, and CA Saloma, Brownian motion in binary aqueous mixtures, Proceedings of the Samahang Pisika ng Pilipinas 27, SPP-2009-4A-05 (2009). URL: https://proceedings.spp-online.org/article/view/SPP-2009-4A-05.