Surface plasmon polaritons (SPPs) are the combined electron oscillations and electromagnetic waves propagating along the interface between a conductor and a dielectric. Recently Huck et al. [Huck A, et al. Phys Rev Lett, 2009, 102: 246802] proved that SPPs can be in a squeezed state, and the squeezed surface plasmons can propagate in a gold waveguide. In this paper, we introduce a quantum mechanical description of the squeezed surface plasmons at first, and discuss the influence of the waveguide losses on the squeezed surface plasmons. surface plasmon polaritons (SPPs), squeezed state, waveguide losses PACS: 42.50.Ct, 42.50.Nn, 03.65.-w
The discharge characteristic of a novel color plasma display panel with metal barrier plate (SM-PDP) has been studied by 3D simulation. Compared with the conventional coplanar PDP (ACC PDP), the novel structure has advantages of lower cost, lower ignition voltage, higher response frequency and higher brightness substantially. The luminous effiacy of the SM-PDP experimental panel with novel structure is about 0.8-0.9lm/W without energy recovery circuit.Address Electrode
The subjective brightness is determined by not only the display screen luminance but also the light surrounding the display. A metric for space brightness named “Feu” is adopted to consider the effect of luminance distribution. The relation between the pupil diameter and the space brightness is applied to obtain the subjective brightness. The measured subjective brightness is obtained both for direct‐view display and augmented reality (AR) display. The results indicate that the measured subjective brightness is much closer to the perceived result. The subjective brightness increases along with the increase of the screen luminance under the same ambient illuminance. While under the same screen luminance, the subjective brightness decreases with the increase of the ambient illuminance in most cases.
Hybrid Chaplygin gas model is put forward, in which the gases play the role of dark energy. For this model the coincidence problem is greatly alleviated. The effective equation of state of the dark energy may cross the phantom divide w = −1. Furthermore, the crossing behaviour is decoupled from any gravity theories. In the present model, w < −1 is only a transient behaviour. There is a de Sitter attractor in the future infinity. Hence, the big rip singularity, which often afflicts the models with matter whose effective equation of state less than −1, is naturally disappear. There exist stable scaling solutions, both at the early universe and the late universe. We discuss the perturbation growth of this model. We find that the index is consistent with observations.
A new type of ac plasma display panel (PDP) with shadow mask (SM-PDP) is presented for its effective structures with lower cost. A two-dimensional self-consistent fluid model is used to analyse the discharge characteristics of the SM-PDP cell in a simplified driving scheme. The effects of the addressing time, the sustaining frequency, the duty ratio of the sustain voltage and the rise time of the voltage pulse on the discharge efficiency are investigated in this paper. The simulation results can help us optimize the driving scheme of SM-PDP.
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