Enhanced extraordinary terahertz transmission through coupling between silicon resonators.

By using Mie resonance coupling effects, low-loss silicon particles as receiving or transmitting antennas can strongly localize the electromagnetic field. Enhanced extraordinary optical transmission (EEOT) is generated by placing two such silicon particles symmetrically on both sides of subwavelength hole arrays in the terahertz (THz) region. When the hole radius is 17 times smaller than the resonance wavelength (/ = 0.

A Carbonate-Templated Decanuclear Mn Nanocage with Two Different Silsesquioxane Ligands.

The mild reaction of the preorganized silsesquioxane precursor with Mn(II) acetate under ambient conditions results in a mixed-valent {MnMn} nanocage () which is protected by both acyclic trimer [Si3] and cyclic tetramer [Si4]. Serendipitous capture of atmospheric CO as a μ-carbonate anion placed at the center supports the formation of the cluster. The magnetic analysis reveals the strong antiferromagnetic interactions between Mn ions.

Manipulating Optical Absorption of Indium Selenide Using Plasmonic Nanoparticles.

In this work, we propose using periodic Au nanoparticles (NPs) in indium selenide-based optoelectronic devices to tune the optical absorption of indium selenide. Electromagnetic simulations show that optical absorption of indium selenide can be manipulated by tuning plasmonic resonance. The effect on the plasmonic resonance of the size, period of NPs, the thickness of silicon oxide, and the insulator spacer is systematically analyzed.

Switching the Optical Chirality in Magnetoplasmonic Metasurfaces Using Applied Magnetic Fields.

Chiral nanophotonic devices are promising candidates for chiral molecule sensing, polarization of diverse nanophotonics, and display technologies. Active chiral nanophotonic devices, where the optical chirality can be controlled by an external stimulus has triggered great research interest. However, efficient modulation of the optical chirality has been challenging.