Nodule imaging

Fig. 1 shows SEM images for the surface of the untreated and the surface treated Nafion 112 membranes with ion dose density from lO to lO ions/cm at ion beam energy of 1 keV. With increasing the ion dose density, surface of the membrane was clearly roughened. Surfece of the membrane seemed to have a nodule-like structure at ion dose densities of lO and lO ... 

Fig. 4. BSE image of mine tailings showing the presence of gypsum nodules with bright rims around them.

Backscattered electron image of a portion of a fine-grained Type A CAI in the Efremovka CV3 chondrite. This inclusion consists of nodules of spinel (sp) surrounded by anorthite (an) and thin rims of pyroxene (px). This CAI may be an aggregate of condensates. 

Figure 28.7 Low-magnification TEM image of sample after activation at 543 K. The carbide nodules growing out of the magnetite crystals are clearly visible. The diffraction pattern in the inset shows spots corresponding to magnetite and the location of the carbide ring.

Figure 28.8 High-resolution TEM image of a sample after activation at 543 K showing a carbide particle as a nodule on the surface of the magnetite crystal. The magnetite lattice fringes fade away at the carbide particle. The carbide particle is surrounded by a film of...

Figure 28.9 TEM image of a sample after activation at 523 K followed by reaction at 523 K for 10 h. The carbide particles form as nodules on the magnetite surface. An enlargement of the carbide particle shows lattice fringes in the core of the particle and a layer of amorphous carbon surrounding the particle. Magnetite (311) lattice fringes are also visible.

Fig. 18.4. Raman spectral imaging of a tissue-engineered bone nodule.

The Fe content in the deposit can be varied from 100 to 50 atom% by decreasing the deposition potential or the Fe(II) concentration in the solution. SEM images of the deposits revealed that they were dense and compact, and the morphology varied from nodules to pyramidal and hexagonal as the iron content in the deposits decreased. 

Figure 8 A backscattered electron image of Vigarano fluffy t)fpe A CAI 477-5. Melilite-rich nodules are each surrounded by Wark-Lovering rims. The field of view is 2 mm.

Figure 19 Backscattered electron images of (a) a t)fpe A CAI in the CR lithology meteorite breccia Kaidun (h) a t)fpe A CAI in the CR meteorite GRA95229 (c) a spinel-rich aggregate in PCA91082 and (d) a spinel nodule in the CR hthology of Kaidun. Ahhreviations PhyU— phyllosihcate W-L Rim— Wark-Lovering rim sequence others as used previously (photos 19(h) and 19(c) courtesy of Dr. A. N. Krot, University of Hawaii after Aleon et al., 2002) (reproduced hy permission of the Meteoritical Society from Meteorit. Planet. Sci. 2002, 37, 1729-1755).

Figure 4 Backscattered electron image of a highly altered Fe,Ni metal nodule in a chondrule in the Murchison CM2 carbonaceous chondrite. Thin veins of iron oxyhydroxides are present extending from the metal grain through the fine-grained rim, into the clastic matrix of the chondrite (reproduced by permission of University of Arizona and The Meteoritical Society from Meteorit. Planet. Sci, 2000, 35, 1300).

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