Scanning electron microscope Fig

This procedure can also be employed for studying bacteria with the scanning electron microscope (Fig. 1.2). 

MOF solution was used for electrospinning. They studied the diameter and morphology of the nanofibers using an optical microscope and a scanning electron microscope (Fig. 9). This fiber display diameters range from 60 nm to 4 pm. 

The specific surface area of the activated catalyst was found to increase with alumina content up to about 20 m /g at around 2% AI2O3 and then to remain constant (10), demonstrating the role of this additive as structural promoter that (together with other nonreducible phases such as hercynite and calcium ferrite) prevents sintering of the metallic iron particles into low surface area material. These values are compatible with the mean particle sizes of around 30 nm, as determined by mercury porosimetry and seen directly in the scanning electron microscope (Fig. 2) (11). This agreement further shows that the texture of the catalyst permits the N2 molecules of the BET analysis to reach essentially the whole internal surface. 

Fig. 13. Scanning electron microscope (sem) photographs of Parylene C-coated printed circuit conductor peeled to demonstrate the adhesion of the...

Fig. 1. Scanning electron microscope photograph of DSA mthenium oxide coating, showing typical cracked surface.

Fig. 2. A series of progressively closer (scanning electron microscope) SEM photographs of the same membrane cross section, clearly showing skin and...

Figure 4.19 Scanning electron microscope picture of cuprous oxide crystals as shown in Fig. 4.18. Note the partial octahedral symmetry.

Close examination of the weld under a low-power stereoscopic microscope revealed small openings (Fig. 15.6). Probing these sites with a pin revealed a large pit that had been covered by a thin skin of weld metal. These sites contained fibrous, metallic remnants (Fig. 15.7). Examination under a scanning electron microscope further revealed the fibrous character of the material (Fig. 15.2) and also the convoluted shapes of the individual fibers (Fig. 15.21). Energy-dispersive spectrographic analysis of this material revealed the compositions in Table 15.1. 

Fig. 5. Scanning electron microscope (SEM) images of aligned MWCNT of uniform length (40 pm) and diameters (30-50 nm). Scales bars are 10 pm (top) and 1 pm (bottom) (Courtesy of Drs. M. Terrones and D. R. M. Walton).

Fig. 4. Scanning electron microscope (SEM) image of FeCl3-intercalated CNTs assuming a bead-string structure with partially intercalated and swelled portions.

Fig. 1.86 Stills from a scanning electron microscope study by time-lapse photography of iron oxidation showing the results of the crack-heal mechanism. Left, Immsl/tm right, 1 mm 0-5 /tm (courtesy Central Electricity Research Laboratories)...

Fig. 51. Scanning electron microscope image of different stages of metalization of DNA. (a) Linear chain of separated palladium clusters connecting two gold contacts (b) magnification of (a) showing clusters with diameter > 40 nm (c) continuous coated DNA strand after one development step with a diameter larger than 40 nm. Reproduced with permission from Ref. (175). Copyright 2001, American Institute of Physics.

Fig. 3.8 A grain of silicon carbide (smaller than a micrometre) more than 4.57 billion years old, as seen under a scanning electron microscope. The grain was found in the Murchison meteorite and was formed in the presolar nebula (Lugmair, 1999)...

Fig. 13.3 Scanning electron microscopic images of LDH particles with various size (A) 100, (B) 200, (C) 1500, and (D) 4500 nm. LDH particles (A) and (B) were synthesized under hydrothermal conditions and (C) and (D) were prepared using hydrolysis of urea (see Table 13.1).

Fig. 6 Size changes of (a) y-PGA-Phe and (c) y-PGA-Trp nanoparticles prepared at various NaCl concentrations. The size of nanoparticles was measured by DLS. (b) Photographs of y-PGA-Phe nanoparticles (2.5 mg/mL) dispersed in water, (d) Scanning electron microscope (SEM) images of y-PGA-Trp nanoparticles prepared at various NaCl concentrations...

The condensation chemistry allows films of various compositions, as the addition of sulfate renders the materials amorphous over a range of concentrations as implied by the acronym HafSOx, where x typically assumes values of 0.3-1 (refer to Fig. 4.3, where the top reaction sequence represents x = 0.5.) The amorphous character and structural integrity are retained until the material decomposes with stoichiometric loss of S03(g) at approximately 700 °C. The smoothness and uniformity of deposited films are illustrated by the Scanning electron microscope (SEM) images in Fig. 4.4. Rapid kinetics, absence of organics, and facile condensation all play important roles in the deposition of these dense HafSOx films. 

Fig. 1.42. Scanning electron-microscopic photographs of different freeze dried products.

Fig. 1.44. Scanning electron-microscopic photographs of a vial containing freeze dried trehalose solution, (a), collapsed product from the bottom of the product (b), shrunk product after 6 months of storage at +20 °C with a RM too high and stored at a too high a temperature (Fig. 6 from [ 1.29]).

Fig. 3.25.1. Porous structure of collagen sponge produced by freezing in a cryogenic bath at -25 °C and subsequently freeze dried (scanning electron microscope, white bar = 1 mm) (from 13.67]).

Fig. 18.5 Scanning electron microscope images showing cross sections of ARROWS with (a) trapezoidal geometry formed from an aluminum core, (b) rectangular geometry formed from an SU8 core, and (c) arched geometry formed from a reflowed photoresist core...

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