Effect of focused light beam on the optical and magnetic properties of ferrofluid

Authors

Danica Linda O. Mancenido ⋅ PH National Institute of Physics, University of the Philippines Diliman
Paul Leonard Atchong Hilario ⋅ PH National Institute of Physics, University of the Philippines Diliman
Lorcel Ericka Venturina ⋅ PH National Institute of Physics, University of the Philippines Diliman
Vincent Ricardo Daria ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

We investigate the effect of a focused laser beam on the magnetic properties of ferrofluids. The magnetooptical properties of ferrofluids are probed using a custom-made beam-scanning microscope. Spontaneous fluid motion is observed upon the introduction of the laser beam as well as the alignment of the ferrofluid magnetic moment upon the introduction of an external magnetic field. The optical power threshold at which ripple formation at the ferrofluid fluid is observed is found to be in the range 40-44 mW at the focus of the objective lens. Evidence of the single photon effect was also observed.

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Issue

2007: Proceedings of the 25th Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2007-PB-24

Section

Poster Session PB

Published

2007-10-24

How to Cite

[1]

DLO Mancenido, PLA Hilario, LE Venturina, and VR Daria, Effect of focused light beam on the optical and magnetic properties of ferrofluid, Proceedings of the Samahang Pisika ng Pilipinas 25, SPP-2007-PB-24 (2007). URL: https://proceedings.spp-online.org/article/view/SPP-2007-PB-24.