Study of magnetofluidic laser scattering under rotating magnetic field

Study of magnetofluidic laser scattering under rotating magnetic field

Magnetic field driven self-assembly of magnetic nanoparticles provides wireless programmable approach for tunable magnetofluidic laser scattering. In this work, we study magnetofluidic laser scattering from a commercial aqueous magnetic fluid (EMG 707) under an external rotating magnetic field. A se...

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Bibliographic Details
Main Authors: Pai, Chintamani, Shalini, M., Radha, S., Nagarajan, R., Ramanujan, Raju V., Varma, Vijaykumar Babulalji
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2018
Subjects:
Optical Devices
Magnetic Fields
DRNTU::Engineering::Materials
Online Access:https://hdl.handle.net/10356/88707
http://hdl.handle.net/10220/45897
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Institution: Nanyang Technological University
Language: English
Description
Summary:Magnetic field driven self-assembly of magnetic nanoparticles provides wireless programmable approach for tunable magnetofluidic laser scattering. In this work, we study magnetofluidic laser scattering from a commercial aqueous magnetic fluid (EMG 707) under an external rotating magnetic field. A set-up is developed to generate rotating magnetic field for the purpose. Self-assembled magnetic nanoparticle structures in the form of chains and bundles are formed along the magnetic field. This creates a linear streak formation in the forward laser scattering. Rotating magnetic field produces rotating linear streak. We report our initial results of rotating linear streaks at 3 rpm, 6 rpm and 10 rpm and our analysis of the patterns. The studies are useful for developing magnetic fluid based optical devices.

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