Troll: slides pt # 3-  fully submerged
 

Control slide - submerged under water at pt # 3 for 24 h. Note that all X-tals are very well developed with perfect crystal faces; they also seem to have a homogenous shape with two main forms (mostly form as seen in Pict. 2 and some as seen in Pict. 3).

(1)  (2)  (3)  (4) 
 
 
 

SAM - slide (gold and 30 mM 3-Mercapto-1-propane sulfonic acid (sodium salt) = C₃SO₃-Na); at air water interface; predominat shapes and size ranges are similar to the control (Figure 1+2 first line below slide with no SAM) and that there seems no difference between Cc grown on the gold+SAM covered part vs. the gold only covered slide (Pict # 3 first line).  Also note the preferential growth at the slide edge fro both the control and the SAM slide (Fig 2 first line and 4 second line).
Notation on botom of figure 3 in this and the next line of pictures is erroneous - should be C₃SO₃-Na_1 and C₃SO₃-Na_2 respectively.
(1)  (2)    (3) 
SAM - slide (gold and 30 mM C₃SO₃-Na); second slide:picttures 2 and 6 are details on the surface of 1 and 5, showing the growth mechanism, while picture 3 is the interface between the SAM on gold and the gold covered slide only.
(1)  (2)  (3)  (4)  (5)  (6)  (7) 
 
 
 
 

SAM - slide (gold and 20 mM L-Aspartic Acid); The L-Aspartic Acid SAM induced the formation of Aragonite (+- Vaterite !); however, on the whole slide and specifically also on the part of the slide that was not covered by the SAM, calcites of shapes and sizes (20-50 µm) that are equivalent to the control slide nucleate. In addition, the structures in pict's 6+7 show growth of small (< 200nm) spherical particles that are cross-linked with the substrate and among each other. The lath like or radial aragonite (1-5) and these spherical structures (6+7) are much smaller than the calcites and thus, although the L-Aspartic Acid induced their nucleation of these polymorphs, the main precipitate is still calcite (not shown below).
(1)  (2)  (3)  (4)  (5)  (6)  (7)