Apart from the effects of pollen shedding and dispersal and pollen grain behaviour, deposition is also acceptor-dependent.
Large grains in the deposition contained precipitates distributed both within the grain interior and at grain boundaries.
We show that this phenomenon is associated with two competing mechanisms: grain growth during deposition (at homologous temperatures as low as 0.17) and adatom attachment to surface sites at grain boundaries.
SEM images of ZnO deposited from a nickel heating chamber subjected to saw-toothed temperature profile up to 570°C show a strong positive linear relationship between the heating durations above 420°C and the film thicknesses, as shown in Figures 3 and 4. Figure 4 Relationships between film thickness, grain diameter, and deposition time.
A major transition point occurs at about 14 days after fertilisation in wheat grown in temperate climates, marking essentially the end of endosperm cell division [ 1] and the start of grain filling (the deposition of starch and gluten proteins) in these cells.
Using multi-proxy analysis of the uppermost 60 cm of the sediments (texture, organic matter content, quartz grains microstructures, charcoal deposition) together with three 14C AMS dates, a sequence of alternating warmer and colder phases has been inferred for the last ca. 6.7 ky cal BP.
Second, the carbonaceous material covered the surfaces of the grains either by deposition, formation in-situ, or a combination of both processes.
When magnetic field was applied during the electroless deposition, grains of films tended to grow perpendicularly to the substrate and hill-like structures would appear with the increase of magnetic intensity.
A model system for H2 formation on carbonaceous grains is the deposition of H atoms on a graphite surface or a graphene layer.
These results indicate that though post-deposition annealing encouraged grain growth, only thin film deposition at high temperatures (in situ substrate heating) results in strong preferential orientation.
