Magnetic Quenching of Plasmon-photonic Activities in Fe$_{3}$O$_{4}$-Elastomer Composite

POSTER

Abstract

We present preliminary results on the effect of particle size on the optical response of Fe$_{3}$O$_{4}$-silicone elastomer composite in the presence of external static magnetic field. The optical response of composites containing 2wt{\%} of Fe$_{3}$O$_{4}$ particles of diameter range 20-30nm, 40-60 nm and d$<$500nm in silicone elastomer were measured using a PerkinElmer lambda 950 UV/vis/NIR spectrometer. We observed a systematic redshift in the optical response of composites containing nanoparticles (20nm-30nm and 40-60nm) with increasing static magnetic field strength, which saturates near 600 Gauss. However, we observed a dramatic suppression to near quenching of the plasmonic activities in the micron size particle (d $<$ 500nm) elastomer composites. This occurred even at very low applied static magnetic fields, suggesting particle size limitations in modulation of plasmon-photonics by external magnetic field.

*This Work is Funded by Penn State Altoona Undergraduate Research Grant.

Authors

  • Dustin Hess

    • Department of Physics, The Pennsylvania State University, Altoona College, Altoona, PA 16601
    • Department of Physics, The Pennsylvania State University, Altoona College, Altoona, PA 16601, USA

  • Danhao Ma

    • Department of Physics, The Pennsylvania State University, Altoona College, Altoona, PA 16601, USA

  • Derek Caplinger

    • Department of Physics, The Pennsylvania State University, Altoona College, Altoona, PA 16601
    • Department of Physics, The Pennsylvania State University, Altoona College, Altoona, PA 16601, USA

  • Kofi Adu

    • Department of Physics, The Pennsylvania State University, Altoona College, Altoona, PA 16601
    • Department of Physics, The Pennsylvania State University, Altoona College, Altoona, PA 16601, USA

  • Richard Bell

    • Department of Chemistry, The Pennsylvania State University, Altoona College, Altoona, PA 16601
    • Department of Chemistry, The Pennsylvania State University, Altoona College, Altoona, PA 16601, USA