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Based on the Equivalent Current Theory of optical waveguide coupling, the electric field distribution of grating structure and notch groove slit are derived. Beam divergence angle with different grating notch groove and light intensity of non-uniform array antenna structure are numerical simulated. Beam light field background comparison diagram with different notch groove current amplitude and the...
The synthesis of silica with bimodal, disordered mesopores structure, by template-mediated sol-gel processing and subsequent heat-treatment process, was investigated. In the presence of nonionic surfactant Tx-15, the organically modified mesostructured nano-particles were synthesized by co-condensation of organosiloxane (RTES) and tetraethoxysilane (TEOS) in the first step, and then the bimodal porous...
Zeolite beta with a low SiO2/Al2O3 ratio was synthesized by a novel two-step process. The synthesized sample was characterized with XRD, SEM, FTIR, and N2 adsorption-desorption and solid-state MAS NMR. The results showed that aluminium species were inserted into the framework of zeolite beta. The BET surface area, volume, and particle size of the zeolite beta sample decreased with decreasing SiO2/Al...
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