Optical microscope photograph

An optical microscope photograph taken at 200 X magnification using polarizing filters is shown in Fig. 21. The spherulites show a characteristic Maltese cross pattern produced by the interaction of the polarized light with the... 

Figure 2. Optical microscope photograph of (Si,B)-ZSM-5 prepared by direct synthesis (14) and containing 2.2 boron atoms per unit cell. The crystals are remarkably well developed and uniform in size (ca. 200pm long), but are all intimately twinned.

Figure 2. Mechanism of photosensitized polymerization of pyrrole and optical microscope photographs of (A) ptdypyrrole synthesized on Nafion film by photosensitized polymerization (B) photo mask used for photoinadiation (width of line = 10 im).

Fig. 7.2 (a) SEM view of thermally decoupled membrane array. [Reprinted with permission from Splinter et al. (2001). Copyright 2004 Elsevier], (b) SEM view of a free-standing sensor platform fabricated using a sacrificial layer of porous silicon [Reprinted with permission from Furjes et al. (2004). Copyright 2004 Elsevier], (c) Optical microscope photograph of a three-section heater sensor array. [Reprinted with permission from Frandoso et al. (2008). Copyright 2008 Elsevier], (d) Suspended porous silicon micro-hotplate with a Pt heater. The thickness of the membrane is 4 pm. The depth of the cavity under the membrane is more that 60 pm [Reprinted with permission from Tsamis et al. (2003). Copyright 2003 Elsevier]... 

The measurement area was 40 x 40 pm, and the step for each pixel was 1 pm. The ranges of fluorescent X-ray intensity are shown in the scales (arbitrary units), (c) Optical microscopic photograph of the sample stained with hematoxylin-eosin after X-ray analysis. The scale bar is 20 pm. (C) 2005 The Japan Society for Analytical Chemistry. 

FIGURE 1.5 (a) Volcanic eruption of Mount St. Helens, May 1980. (b) Optical microscope photograph of volcanic ash. Magnification 12Sx. USGS photograph by Austin Post. Reprinted from Mount St. Helens Five Years Later. Courtesy of Eastern Washington University Press and W. C. McCrone and J. G. Delly, The Particle Atlas. Reprinted by permission from McCrone Research Institute. 

Fig. 10. Crack pinning by a SiC fiber in a glass matrix, photographed using an optical microscope and Nomarski contrast. Fiber ties perpendicular to plane of micrograph lines represent crack position at fixed intervals of time, crack mnning left to right.

Even with the most powerful optical microscopes available, we cannot make out the individual atoms that make up the surface of a solid. However, recent developments have allowed us to overcome this restriction and to resolve surfaces on an atomic scale. The first two images in this box illustrate the kind of detail we can now obtain. One shows the individual atoms lined up in rank upon rank to form a clean surface. There could hardly be more direct evidence for the existence of atoms Although these images are not photographs in the normal sense, we can make out the close packing of the atoms. The other photograph shows a tiny crystal lying on another surface. 

Photograph taken under an optical microscope of Vero cells growing on microporous microcarriers. 

Figure 7a- Photograph at an optical microscope of two sub-micron YBCO dc-SQUIDs, fabricated on symmetric 45° [001] tilt bicrystal substrates (qi = —Q2) b -FIB image of one dc-SQUID.

Each coke was mounted in resin and a polished surface prepared which was examined and photographed under the optical microscope Fracture surfaces of each coke were examined by SEM ... 

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