Micrograph, scanning electron

Figure C2.11.2. A scanning electron micrograph showing individual particles in a poly crystalline alumina powder.

Figure C2.11.3. A scanning electron micrograph of tire spherical alumina granules produced by spray drying a ceramic slurry. The granules are comprised of individual alumina particles, sintering additives, and an organic binder.

Figure C2.11.5. Scanning electron micrographs showing the microstmcture of an alumina ceramic spark-plug body (a) fracture surface and (b) polished and thennally etched cross section.

Figure C2.17.3. Close-packed array of sub-micrometre silica nanoparticles. Wlren nanoparticles are very monodisperse, they will spontaneously arrange into hexagonal close-packed stmcture. This scanning electron micrograph shows an example of this for very monodisperse silica nanoparticles of -250 nm diameter, prepared in a thin-film fonnat following the teclmiques outlined in [236].

Fig. 4. Scanning electron micrograph of 5-p.m diameter Zn powder. Neck formation from localized melting is caused by high-velocity interparticle coUisions. Similar micrographs and elemental composition maps (by Auger electron spectroscopy) of mixed metal coUisions have also been made.

Fig. 10. Scanning electron micrograph of amorphous nanostmctured iron powder produced from the ultrasonic irradiation of Fe(CO). ...

Fig. 12. Scanning electron micrograph of sonochemicaUy synthesized hemoglobin microspheres.

Fig. 11. Scanning electron micrograph showing the intersection of primary shear bands with the glassy ribbon surface produced by simple bending.

Fig. 5. (a) Preparation method and (b) scanning electron micrograph of a typical expanded polypropylene film membrane, ia this case Celgard. 

Fig. 16. Scanning electron micrograph of a silicone mbber composite membrane.

Fig. 18. Cross-sectional scanning electron micrograph of a three-layered alumina membrane/support (pore sizes 0.2, 0.8, and 12 p.m, respectively).

Fig. 27. Scanning electron micrograph (a) and cross-sectional comparison (b) of screen and depth filters both having a nominal particulate cut-off of 0.4 flm. The screen filter (a Nuclepore radiation track membrane) captures particulates at the surface. The phase-inversion ceUulosic membrane traps the...

Iridium Oxide. Iridium dioxide [12030 9-8] coatings, typically used in combination with valve metal oxides, are quite similar in stmcture to those of mthenium dioxide coatings. X-ray diffraction shows the mtile crystal stmcture of the iridium dioxide scanning electron micrographs show the micro-cracked surface typical of these thermally prepared oxide coatings. 

Fig. 14. A scanning electron micrograph of a diamond coating on a siUcon nitride cutting tool (b) at higher magnification, the octahedral growth of...

Fig. 1. Scanning electron micrograph showiag ceUs of S. cerevisiae. Bud scars are visible at the ends of ceUs. Scale bar is 5 p.m.

Fig. 5. Scanning electron micrographs of hoUow fiber dialysis membranes. Membranes in left panels are prepared from regenerated cellulose (Cuprophan) and those on the right from a copolymer of polyacrylonitrile. The ceUulosic materials are hydrogels and the synthetic thermoplastic forms a microreticulated open cell foam with a tight skin on the inner wall. Pictures at top are membrane cross sections those below are of the wall region. Dimensions as indicated.

Fig. 1. Scanning electron micrograph of dried crystals of 5200 ppm calcium sulfate solution containing (a) zero, (b) 10, and (c) 25 mg/L of added...

Figure 3.30 Scanning electron micrograph of tubercles in Fig. 3.28. Note the clam-shell growth steps formed by successive fractures at the tubercle base. Tubercle is about 200 pm in diameter. (Courtesy of National Association of Corrosion Engineers, Corrosion 91 Paper No. 84 by H. M. Herro.)...

Figure 6.25 Low-power scanning electron micrograph of small tubelike organisms in Figs. 6.17 and 6.20. Note how all organisms (except one) point into the direction of flow.

Figure 11.16 Scanning electron micrograph showing cones of brass created by impingement of high-velocity wet steam. (Magnification 50x.)...

Figure 1.5 shows the cumulative pore volume curve for 5-/rm monosized porous PS-DVB particles with 50, 60, and 70% porosity. The curves were drawn by overlapping the measurements from nitrogen adsorption-desorption and mercury intrusion. A scanning electron micrograph of 5-/rm monosized particles with 50% porosity is shown in Fig. 1.6 (87). 

Figures 13.4-13.7 are scanning electron micrographs of 10 -, lO" -, 10 -, and 500-A Jordi gels, respectively, produced as described earlier. Generally, 100-A polydivinyl benzene gels are not used because the porosities obtainable are very low, and hence a 67% pore volume 500-A column will actually do...

FIGURE 24.1 Scanning electron micrograph of an adipose cell (fat cell). Globules of triacylglycerols occupy most of the volume of such cells. (Prof. P. Motta, Dept, of Anatomy, University La Sapienza, Rome/Science Photo Library/Photo Researchers, Inc.)... 

Figure 2 A typical scanning electron micrograph of the submicron size (0.2 / tm), uniform polystyrene micro-spheres produced by the emulsion polymerization of styrene. Magnification 20,000 x.

Figure 19 The scanning electron micrographs of the polystyrene seed latex and the copolymer latices carrying carboxyl, hydroxyl and amine functional groups, (a) PS/PAA, (b) PS HEMA, (c) PS/PDMAEM. The original SEM photographs were taken with 10,000 x magnification and reduced at a proper ratio to place the figure. (From Ref. 93. Reproduced with the permission of John Wiley Sons, Inc.)...

A typical scanning electron micrograph of the uniform macroporous polystyrene-divinylbenzene particles is given in Fig. 20. First studies on the synthesis of macroporous uniform particles were started by Ugelstad et al. [109]. They used a two-step activated swelling method to obtain macroporous uniform particles in the... 

Figure 20 A typical scanning electron micrograph of the macroporous uniform poly(styrene-divinylbenzene) late> particles. Magnification 1200 x, (particle size = 16.0/rm average pore diameter = 200 nm).

Figure 16 Scanning electron micrograph of poly(cardanyl acrylate) beads.

Figure 3 Scanning electron micrographs of 60 40 NR-PMMA blend (a) 0% and (b) 3.5% graft copolymer.

Figure 12 Scanning electron micrographs of 70 30 HDPE-NBR blend with (a) 0 wt%, (b) 1 wt%, (c) 5 wt%, and (d) 10 wt% maleic anhydride modified polyethylene. Source Ref. 75.

Fig. 7.88 Scanning electron micrographs of cross-sections through interaction layers with superimposed Fe and Zn K, line scans across the layers (

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