J. X. Cao

Learn More
Articles you may be interested in Plasmon-induced transparency in metamaterials: Active near field coupling between bright superconducting and dark metallic mode resonators Appl. Electromagnetically induced transparency in terahertz plasmonic metamaterials via dual excitation pathways of the dark mode Plasmonic metamaterials for ultrasensitive refractive(More)
We demonstrate that left-handed resonance transmission from metallic metamaterial, composed of periodically arranged double rings, can be extended to visible spectrum by introducing an active medium layer as the substrate. The severe ohmic loss inside metals at optical frequencies is compensated by stimulated emission of radiation in this active system. Due(More)
Simultaneously enhanced reflectance and transmittance greater than 35 dB are demonstrated for the lasing spaser ͑or spasing͒ behavior in an active fishnet metamaterial. In mimicking a lasing cavity, an equivalent active slab with Lorentz dispersion for the index of refraction is established to model the spasing metamaterial through the Fabry-Perot effect.(More)
This paper investigates the radiation properties of two coupled split-ring resonators ͑SRRs͒. Due to electromagnetic coupling, two hybrid magnetic plasmon modes were induced in the structure. Our calculations show that the radiation loss of the structure was greatly suppressed by the hybridization effect. This led to a remarkable increase in the Q factor of(More)
Kondo lattice systems can exhibit unusual many-body behaviors that result from the interplay between onsite Kondo screening and intersite coupling. We used scanning tunneling microscopy to image the Kondo resonance in a nonconventional Kondo lattice formed by self-assembled oxygen (O(2)) molecules, which are paramagnetic, on the gold reconstructed surface(More)
An electron-emission theoretical model integrating the change in the grain size of nanocrystalline cubic boron nitride (c-BN) thin films was established. To understand better the essence of field emission, an accurate numerical scheme, the transfer matrix method, that can be used to compute the tunneling coefficients of the actual surface barrier, was also(More)
  • 1