Scattering electron micrographs

Figure 2. SEM Back scatter electron micrograph of a straw ash/sand sample heated at 900 C for 6 hours. Dark areas are pores, middle grey are sand grains and light grey rims are the molten ash. 

Fig.l shows the back-scattered electron micrographs of the polished cross-section of Cf/SiC-BN composite. It is clear that though the inter-bundle matrix is dense, there are still some pores remaining in the intra-bundle areas. Such pores formed because of hindrance to impregnation of... 

Some physical and mechanical properties of composites with different fiber reinforcements were listed in table 1. Bulk density of composite with T700SC fibers (Sr, density 2.66 0.05g/cm )is some higher than that of composite with M40 fibers (Sm, density 2.47 0.05 g/cm ) though there is just little differences in the open porosities. This may be mainly caused by the different ZrC volume fractions in the composites. It can be observed from the back-scattered electron micrographs shown in Fig. 1 that the dispersion of ZrC particles... 

The surface analysis for morphology and average particle size was carried out with JEOL JSM 6301 F scanning electron microscope (SEM). The micrographs of the samples were observed at different magnifications under different detection modes (secondary or back-scattered electrons). 

Fig. 4 PIC dye nanoparticles prepared by the ion-association method. (1) Particle size distributions (determined by the dynamic light scattering technique) and the corresponding electron micrographs of the dye nanoparticles. The average diameter can be controlled by tuning the molar ratio of TPB- to PIC+ (=[TPB-]/[PIC+]. With an increase in the molar ratio, the average diameter decreased. (2) Absorption spectra of PIC nanoparticles in aqueous solution with different sizes (125 and 64 nm in diameter), exhibiting size-dependent peak shift of the 0-0 band. The spectrum of the aqueous PIC-Br monomer solution is also shown...

Fig. 2.55 Scanning electron micrographs (SEM) in the back scattered electron (BSE) mode at 100,000x of the ABCR MgH + 5 wt.% n-Ni mixtures ball- S milled powder under 700 kPa hydrogen with varying SSA (see the insets in the pictures)...

Fig. 9.4.19 Electron micrograph of In ultratine particles produced by a gas flow-solution trap method. Note that there are large (several tens of nanometers) spherical particles with a background of very small nanoparticles scattered. (From Ref. 10.)...

Transmission electron microscopy (TEM) has been used to provide a direct image of block copolymer micelles that complements the indirect information obtained from scattering experiments. Because of the technical difficulties of obtaining electron micrographs from solutions it is not employed routinely. Price and co-workers (Booth et al. 1978 Price and Woods 1973) obtained specimens for TEM investigation by two methods. In the first (Price and Woods 1973),... 

M. A. Bolzinger-Thevenin, I. L. Grossiord, and M. C. Poelman, Characterization of a sucrose ester microemulsion by freeze fracture electron micrograph and small angle neutron scattering experiments, Langmuir, 15 (1999) 2307-2315. 

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