Plasmonic nanostructures have attracted significant attention because of their unique optical properties arising from localized surface plasmon resonances (LSPR). Due to the high optical sensitivity of LSPR to size, shape, electron density, and local environments, it is possible to probe the physical and chemical processes on nanoparticles by monitoring their spectral change of LSPR. However, t...

A 2D (two dimensional) random cellular solid model was built using FEM(finite element method) based on a modified Voronoi tessellation technique. A sequence of permanent biaxial compression deformations was applied on the model to obtain a series of re-entrant random cellular solid structures with different area compression ratios. The Poisson's ratio and energy absorption capacity of cellular ...

In the present work the efficiency of a solar parabolic trough has been investigated experimentality. parabolic trough solar collector constitute a proven source of thermal energy for industrial process heat and power genaration. The impact of  using the partially porous media in the absorber on the efficiency of PTC (parabolic trough collector) has been investigated. The porosity of copper foa...

This paper presents a numerical study of microwave scattering and emission from a foamcovered ocean surface. The foam layer is modeled as an inhomogeneous layer with randomly rough airfoam and foam-seawater boundaries. Kelvin’s Tetrakaidecahedron structure is selected as the skeleton for simulating the air bubbles in the foam layer. The electromagnetic characteristics of the foam layer, includi...

In Thailand, ceramic jars (135-200 liters) covered by aluminum lids commonly are used to store water for household use. In laboratory cages, gravid female Aedes aegypti (L.) were able to enter and oviposit in a covered water jar. Although the aluminum lid was not a complete barrier to gravid females, it reduced the number of eggs oviposited by 77%. A vertically oriented foam rubber ring which w...

Three stochastic open-cell aluminum foam samples were incrementally compressed and imaged using X-ray Computed Tomography (CT). One of the samples was created using conventional investment casting methods and the other two were replicas of the same foam that were made using laser powder bed fusion. The reconstructed CT data were then examined in Paraview to identify and highlight the types of f...

The struts of reticulated aluminum foams were coated with nanocrystalline Ni–W by electrodeposition. The thickness and composition of these high-strength coatings are controlled by varying the bath chemistry, applied current conditions and deposition time. Despite an increase in density as compared to the uncoated foams, the coated foams exhibit improvements in both absolute and specific streng...