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In the last few years, great interest grown up in the control and manipulation of electromagnetic surface wave. The aim of this paper is to present a novel approach to design new devices able to manipulate them. To validate the proposed design, two structures, an all-dielectric device and a metasurface-based implementation, for surface wave cloaking will be presented and compared. Both devices show...
Microstructured optical fibers (MOFs) have been widely utilized for optofluidic waveguides, in which the micro-holes along the MOFs act as microfluidic channels for various applications such as supercontiuum sources and aqueous solution sensors. The air hole diameter of MOFs is generally several microns to tens of microns, which is much smaller compared with traditional fluid-core fiber waveguide...
This paper describes a two-dimensional optical transformation method that can be used to tailor the propagation of waves confined to a surface. Virtual and physical geometries are employed, and the equivalence of the wave behaviour on these two different surfaces is illustrated using full wave simulations of a graded-index loaded waveguide. This technique has great promise to design devices that are...
This thesis analyses data from year 2009 to 2011 for the listed companies of refrigeration and air conditioning industry, and it studies the performances of the companies. Using the Factor Analyses approach, this thesis establishes an indicator system for the performance evaluation of the industry. Meanwhile, it does horizontal analysis and vertical analysis based on DEA for the variable returns to...
Protein-protein interactions (PPIs) play a key role in many cellular processes, such as the regulation of enzymes, signal transduction or mediating the adhesion of cells. Knowing the PPI types can help the biological scientists understand the molecular mechanism of the cell. Computational approaches for identifying PPI types can reduce the time-consuming and expensive of biological experimental methods...
Based on coordinate transformation, a carpet cloak made from nonmagnectic dielectric cylinders is designed, simulated and tested experimentally in this paper. By manipulating the periodicity of the dielectric cylinders, it is possible to achieve the required dielectric map and therefor the propagate direction of the electromagnetic waves. The scattering reduction effects of the cloak are verified...
In this paper, the statistical distribution of amplitude of the ultra wideband (UWB) radio channel for body-centric wireless communications is being investigated by considering a large number of on-body radio links. Amplitude distribution is investigated by using Kolmogorov-Smirnov and Akaike criterion. Analysis demonstrated that above the 92% of the times the channel amplitudes (which includes ground...
In this paper, the properties of cylindrical high-permittivity dielectric particles are studied. The refractive index is calculated with a parameter retrieval method and a Fourier transform method. It is shown that the periodic particles have low losses, while being non-resonant and broadband. Furthermore, the refractive index can be adjustable according to the dimensions of the particles. Application...
Asphalt concrete is a porous and no uniform material; air void always plays an important role in asphalt concrete quality control. This study describes a new analytical method to quantify the air voids on section surface of asphalt mixes based on image analysis. This study establish a credible relationship of natural logarithmic between the micro index from this new measurement and traditional macro...
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