Research · Publication & note

Mirror-Image-Induced Magnetic Modes

Journal article

Elisabet Xifré-Pérez, Lei Shi, Umut Tuzer, Roberto Fenollosa, Fernando Ramiro-Manzano, Romain Quidant and Francisco Meseguer

ACS Nano

Volume 7

Issue 1

Pages 664–668

2013

DOI · 10.1021/nn304855t View article at ACS ACS Nano journal

Abstract

Reflection in a mirror changes the handedness of the real world, and right-handed objects turn left-handed and vice versa. Also, we learn from electromagnetism textbooks that a flat metallic mirror transforms an electric charge into a virtual opposite charge. Consequently, the mirror image of a magnet is another parallel virtual magnet as the mirror image changes both the charge sign and the curl handedness. Here we report the dramatic modification in the optical response of a silicon nanocavity induced by the interaction with its image through a flat metallic mirror. The system of real and virtual dipoles can be interpreted as an effective magnetic dipole responsible for a strong enhancement of the cavity scattering cross section.

How to cite

Initials first

E. Xifré-Pérez, L. Shi, U. Tuzer, R. Fenollosa, F. Ramiro-Manzano, R. Quidant and F. Meseguer. “Mirror-Image-Induced Magnetic Modes.” ACS Nano 7(1), 664–668 (2013). DOI: 10.1021/nn304855t.

Family name first

Xifré-Pérez, E., Shi, L., Tuzer, U., Fenollosa, R., Ramiro-Manzano, F., Quidant, R., Meseguer, F. “Mirror-Image-Induced Magnetic Modes.” ACS Nano 7(1), 664–668 (2013). DOI: 10.1021/nn304855t.

Figures

Figure 1. Mirror image method for an electric charge and a magnetic dipole.

Figure 2. Transmission spectrum of a polycrystalline silicon sphere on glass, comparing experiment and simulation.

Figure 3. Reflection spectra of silicon spheres on a gold substrate.

Figure 4. Calculated scattering cross section and configurations used to model the mirror-image interaction.

Figure 5. Field distributions, induced magnetic dipole and scattering pattern.

Figures reproduced for non-commercial use on the author’s personal website from E. Xifré-Pérez et al., ACS Nano 7, 664–668 (2013), DOI: 10.1021/nn304855t. Copyright © 2012 American Chemical Society. ACS sharing policy