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DFT B3LYP/6-31G method and polarizable continuum model (PCM) were used for the study of dimers and trimers 4-cyano-4′-n-pentylbiphenyl molecule (CB5) in various solvents. It was shown that there are changes of structure and vibrational spectra of molecules CB5.
In this paper, the analysis of the resonance frequency for a Half-Mode Substrate-Integrated Waveguide (HMSIW) cavity realized with circular segments is presented. The analysis is based on the perturbation method applied on an elliptical waveguide using Mathieu functions. The results show an excellent agreement between simulation and analysis for an ideal model of HMSIW where the open aperture is approximated...
The focus of this paper is on a modeling methodology for capturing the complex mechanical behavior of a single layer pressure-sensitive adhesive (PSA) system, based on empirical observations of its stress-strain behavior. This study is motivated by the fact that there is very limited modeling ability to mechanistically predict the bimodal stress-strain curves of single-layer PSAs. Empirical observations...
Thermal noise in optical cavities sets a fundamental limit to the frequency instability of ultra-stable lasers. We estimate the contribution of the sphere spacer using the new Equation based on Levin's formulation of the fluctuation-dissipation-theorem (FDT) and elastic strain energy. Focusing on the sphere spacer geometry, the estimate and simulation of the thermal noise have been carried out. We...
Thermal noise in optical reference cavities sets a severe limit to the frequency instability of ultra-stable lasers. We, for the first time, give an analytic expression of the contribution of the spindle spacer based on Levin's formulation of the fluctuation-dissipation-theorem (FDT). The analysis indicates that the thermal noise of spindle cavity has a few different features from cylindrical cavities...
Power and ground planes are the major noise sources in the electronic package and multi-layered printed circuit boards. We propose a novel imaging method to simulate the impedance of power and ground planes. In the proposed method, the noise propagation between the power and ground planes is equivalent to a two-dimensional transverse magnetic problem. The electromagnetic wave multi reflections from...
The most relevant aspects related to the modeling and manufacturing of the basic antennas of a P-Band ice sounder array are described. A robust basic element design insensitive to technological or construction tolerances and fulfilling electrical and very demanding mechanical specifications is presented. These goals have been attained after an exhaustive HFSS™ simulation campaign, which has been efficiently...
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