Phase contrast photomicrographs

Fig. 27. Phase contrast photomicrographs showing particle formation via phase inversion.

Figure 5.2. (a) Reflection-type photomicrograph showing step patterns due to growth observed on low-index (0001) face of hematite, (b) Phase contrast photomicrograph showing etch figures on (111) face of diamond. 

Figure 5.7. Phase contrast photomicrographs depicting interlaced spiral steps observed on (0001) faces of (a) magnetoplumbite and (b) SiC 6H polytype, (c) Schematic figure. The very narrow step separations observed at the center of the spiral in (b) are due to a sharp increment of supersaturation at the final stage due to the discontinued electrical supply.

Figure 5.8. (a) Typical spiral pattern (phase contrast photomicrograph of (0001) face of Sic grown from the vapor phase), and spiral growth hillocks which appear as (b) polygonal and (c) conical pyramids due to narrow step separation. Part (b) is a differential interference photomicrograph, (1010), and part (c) is a reflection photomicrograph, (1011), of hydrothermally synthesized quartz. 

Figure 5.12. Phase contrast photomicrograph of a composite spiral in SiC, (0001).

Figure 5.13. Positive phase contrast photomicrograph of composite spiral in hematite, (0001). A bright contrast appears on the higher side of a step. By tracing the route from the lowest step to higher steps, the lowest step becomes the highest step after one turn, corresponding to Escher s staircase. Since the curvatures of the steps are reversed at the center of a group of dislocations, a depression appears due to the associated strain field (refer to Section 5.7). See also Fig. 5.11.

Figure 5.17. Phase contrast photomicrograph showing bunching of elemental spiral steps (arrows) in hematite, (0001) face.

Figure 9.10. Phase contrast photomicrograph of a (111) face ofan octahedral diamond crystal from Siberia. Note the triangular pyramidal growth hillocks and small trigons at the summits of the respective growth hillocks. Photographed by K. Tsukamoto [12].

Figure 12.9. Spiral step pattern observed on both sides of a twin boundary on a 0001 face of a hematite crystal [7]. T.B. is the twin boundary, J. and T indicate orientations. Phase contrast photomicrograph.

Figure 12.10. Phase contrast photomicrograph of hematite from Vesuvius in Italy. Straight steps crossing curved growth steps, which have appeared due to the movement of dislocations after the cessation of growth [8], are shown.

Phase contrast photomicrographs for a 50% polyblend are shown in Figure 7. The granular structure and the changes with temperature in the relative content of light vs. dark regions are noticeable. Also, note that the specimen heated above 120°C. retained its appearance when cooled to room temperature (Figure 8). 

Figure 7. Phase contrast photomicrographs of a 50-50 blend of PVN and PEO at different temperatures X 560...

Figure 11. Phase contrast photomicrographs of a graft copolymer of 54 wt. % PVN...

Fig. 3. Phase-contrast photomicrograph of THP-1 cells (phase bright objects) attached to a layer of thrombin-treated platelets (phase dark objects) after THP-1 cell perfusion for 3 min at a shear stress level of 1.5 dyn/cm2.

FIGURE 2.14 Phase contrast photomicrograph of cultured Entamoeba histolytica trophozoites. 

Fig. 24 (a, b) Phase-contrast photomicrographs of normal human dermal fibroblast (NHDF) cultures on the surfaces of (a) N-NC6 gel and (b) N-ORl gel after 5 days, (c) Cell sheet detachment (arrow) of NHDF caused by a decrease in the temperature to 10-20°C. (d) NHDF cell sheet detached from an N-NC6 gel [108]... 

Fig. 3. Cell fusion in vaccinia virus-infected cells in the presence of actinomycin D. L cells were infected with the IHD-J or the IHD-W strains of vaccinia virus (3000 particles/cell) in the presence of actinomycin D (20 fxg/ml). The phase contrast photomicrographs were taken at 3 hr after infection and treatment. (A) IHD-W with actinomycin D, (B) actinomycin D, (C) IHD-J with actinomycin D, and (D) cell control. From unpublished data of R. Bablanian.

Fig. 2 Phase-contrast photomicrographs showing culture phases to obtain olfactory ensheathing cells (OECs). (a) Non-purified cells plated to show the morphology of fibroblasts (arrowhead and OECs (arrov /. (b) Purified OECs after 24 h plating, (c) Purified OECs after 5 days, when they become confluent. The olfactory mucosa was extracted from neonate mice and purified with anti-Thy 1.2-mediated lysis by rabbit serum complement Scale bars 50 pm... 

Figure 4A. Morphology of F9 cells that synthesized tRNA -ribozymes and rclativelevels of marker proteins that are s[>ecific for the undifferentiated and the differentiated state, respectively. Left panels show phase Contrast photomicrographs of F9 cells that synthesized either the active (upper) or the inactive (middle) CBP-ribozyme after treatmmt with retinoic adds (RA 3 x U) M) and imdifFeientiated wild type (WT) F9 cells (bottom). Right pands show immunostaining of F9 cells with antibodies spedfic for the surtoce antigen, SSEA-1.

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