Use of the scanning electron microscope (SEM) with X-ray microanalysis allows study of clinker and cements; permitting measuring bulk phase abundance and surface areas of the phases, as well as bulk chemistry of constituent phases can be carried out. Direct imaging of hydraulic cements by SEM yields a more complete picture of both bulk and surface phase compositions. Mass percentages obtained b...

polylactic acid based biodegradable nanocomposites reinforced with acetylated nanocellulose were fabricated with solution casting procedure. the nanocomposites were prepared by adding 1, 3 and 5% nanofiber loadings. the microstructure, physical, mechanical and thermal properties of the prepared nanocomposites were investigated. scanning electronic microscope (sem) analysis of the composites con...

The clay mineralogy of pyroclastic Nb(Ta)-Zr(Hf)-REE-Ga mineralization in Late Permian coal-bearing strata from eastern Yunnan Province; southwest China was investigated in this study. Samples from XW and LK drill holes in this area were analyzed using XRD (X-ray diffraction) and SEM (scanning electronic microscope). Results show that clay minerals in the Nb-Zr-REE-Ga mineralized samples are co...

GaN films have been grown at 1050 8C on porous silicon (PS) substrates by metalorganic vapour phase epitaxy. The annealing phase of PS has been studied in temperature range from 300 to 1000 8C during 10 min under a mixture of ammonia (NH3) and hydrogen (H2). The PS samples were characterized after annealing by scanning electronic microscope (SEM). We observed that the annealing under the GaN gr...

Cathodoluminescence (CL) hyperspectral imaging—the acquisition of a full optical emission spectrum at each pixel of an image—has become firmly established as a measurement mode in scanning electron microscopy (SEM) [1]. CL is sensitive to the structural, compositional and electrical properties of a sample, and the inherent multimode nature of SEM makes it possible to combine CL with other techn...

TiO2 nanorods can be used as dye-sensitized solar cells and as various sensors and photocatalysts. These nanorods are synthesized by a using thermal corrosion process in a NaOH solution at 200 oC with TiO2 powder as a source material. In the present work, the synthesis of TiO2 nanorods in anatase, rutile and Ti8O15 phases and the...

Alumina nanostructures, nanowires, and semicolumn nanotubes with high aspect ratios were synthesized by the chemical etching of porous alumina membranes (PAMs) in phosphoric acid solution. The morphology and structure of alumina nanostructures were analyzed by scanning electron microscopy (SEM), energy dispersive spectrum (EDS), and X-ray diffraction (XRD), respectively. The results showed that...

Experiments and instruments for operation in and on small satellites are constrained by the volume, weight, power, and ruggedness requirements of the satellite design and structure. It is anticipated that increasing numbers of "laboratory" style experiments will be performed in space. An application of current interest is the in-space observation of material surfaces exposed to the space enviro...

Beton ringan geopolimer merupakan salah satu beton yang ramah lingkungan karena proses pembuatannya memanfaatkan prekursor berasal dari alam dan/atau limbah seperti kaolin, abu terbang, dan pozzolan lainnya. ini juga termasuk jenis inovasi memadukan kelebihan geopolimer. Penelitian menggunakan material terdiri prekursor, larutan alkali aktivator, agregat halus, superplasticizer, foam dengan tar...

Cadmium Selenide (CdSe) thin films were synthesized by chemical bath deposition (CBD) method. The XRD, SEM, UV-Visible absorption spectrum, dielectric studies and photoconductivity measurements were used to characterize the CdSe films. The X-ray diffraction (XRD) is used to examine the structure of CdSe thin film. The surface morphology of the film was analyzed using Scanning Electron Microscop...