Research Papers

Magnetic quenching of photonic activity in Fe3O4-elastomer composite

[+] Author Affiliations
Danhao Ma

The Pennsylvania State University, Department of Energy and Mineral Engineering, University Park, 110 Hosler Building, Pennsylvania 16802, United States

Dustin T. Hess, Mauricio Terrones

The Pennsylvania State University, Department of Physics, University Park, 104 Davey Laboratory, Pennsylvania 16802, United States

Pralav P Shetty

The Pennsylvania State University, Department of Mechanical and Nuclear Engineering, University Park, 137 Reber Building, Pennsylvania 16802, United States

Kofi W. Adu

The Pennsylvania State University, Materials Research Institute, University Park, 101 Materials Research Laboratory, Pennsylvania 16802, United States

The Pennsylvania State University, Altoona College, Department of Physics, 3000 Ivyside Park, Altoona, Pennsylvania 144LRC, United States

Richard C. Bell

The Pennsylvania State University, Altoona College, Department of Chemistry, 3000 Ivyside Park, 104 Science Building, Altoona, Pennsylvania 16601, United States

J. Nanophoton. 10(1), 016017 (Mar 18, 2016). doi:10.1117/1.JNP.10.016017
History: Received August 12, 2015; Accepted February 24, 2016
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Abstract.  We report a quenching phenomenon within the visible region of the electromagnetic spectrum in the photonic response of a passive Fe3O4-silicone elastomer composite film due to magnetically aligned Fe3O4 nanoparticles. We performed systematic studies of the polarization dependence, the effect of particle size, and an in- and out-of-plane particle alignment on the optical response of the Fe3O4-silicone elastomer composites using a UV/vis/NIR spectrometer. We observed systematic redshifts in the response of the out-of-plane composite films with increasing particle alignment and weight that are attributed to dipole-induced effects. There were no observable shifts in the spectra of the in-plane films, suggesting the orientation of the magnetic dipole and the induced electric dipole play a crucial role in the optical response. A dramatic suppression to near quenching of the photonic response occurred in films containing moderate concentrations of the aligned nanoparticles. This is attributed to the interplay between the intra- and the interparticle dipoles. This occurred even when low magnetic fields were used during the curing process, suggesting that particle alignment and particle size limitation are critical in the manipulation of the photonic properties. A dipole approximation model is used to explain the quenching phenomenon. An active system of such a composite has a potential application in magneto-optic switches.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Danhao Ma ; Dustin T. Hess ; Pralav P Shetty ; Kofi W. Adu ; Richard C. Bell, et al.
"Magnetic quenching of photonic activity in Fe3O4-elastomer composite", J. Nanophoton. 10(1), 016017 (Mar 18, 2016). ; http://dx.doi.org/10.1117/1.JNP.10.016017


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