Field induced photonic bandgap in ferrodispersion

Author

Mehta, R.V. ; Patel, Rajesh ; Chudasama, Bhupendra ; Desai, Harshal ; Bhatnagar, S.P. ; Upadhyay, R.V.

Author_Institution

Dept. of Phys., Bhavnagar Univ., Bhavnagar

fYear

2008

fDate

8-11 Dec. 2008

Firstpage

1

Lastpage

3

Abstract

A stable dispersion of micron size magnetite spheres in a ferrofluid exhibits several interesting magnetically induced effects like zero forward scattering, enhanced backward scattering etc. Here we show that at a critical magnetic field the dispersion inhibits propagation of certain optical frequencies. The field required to induce this photonic band gap is quite moderate and the technique can be easily adopted for lab-on-chip devices.

Keywords

dispersive media; iron compounds; lab-on-a-chip; light propagation; light scattering; magnetic fluids; magneto-optical effects; optical dispersion; photonic band gap; Fe₃O₄; critical magnetic field effect; enhanced backward scattering; ferrodispersion; lab-on-chip device; magnetically induced photonic band gap; micron size magnetite sphere; optical frequency; optical propagation dispersion; zero forward scattering; Crystalline materials; Crystallization; Magnetic materials; Magnetosphere; Optical materials; Optical scattering; Particle scattering; Photonic band gap; Photonic crystals; Saturation magnetization;

fLanguage

English

Publisher

ieee

Conference_Titel

PhotonicsGlobal@Singapore, 2008. IPGC 2008. IEEE

Conference_Location

Singapore

Print_ISBN

978-1-4244-3901-0

Electronic_ISBN

978-1-4244-2906-6

Type

conf

DOI

10.1109/IPGC.2008.4781333

Filename

4781333