If coherent light is incident on a suspension containing nanoparticles, they act as scattering centers and the result of the far-field interference is a “speckled” image. The scattering centers have a complex movement of both sedimentation and Brownian motion. Consequently the speckle image is not static but presents time fluctuations. A computer code to simulate the dynamics of the coherent light scattering on nanofluids was written, tested, and used to calculate the far-field intensity variation for nanofluids having different particle size. The results are discussed and an alternative experimental method for fast nanoparticle size assessing is suggested as a possible application.
© 2008 Optical Society of America
Original Manuscript: October 19, 2007
Revised Manuscript: January 31, 2008
Manuscript Accepted: February 1, 2008
Published: March 27, 2008
Vol. 3, Iss. 5 Virtual Journal for Biomedical Optics
Dan Chicea, "Coherent light scattering on nanofluids: computer simulation results," Appl. Opt. 47, 1434-1442 (2008)