Sentence examples for silver filament from inspiring English sources
Although discolouration was observed in both well processed and insufficiently washed photographs, TEM images showed increased homogeneity of the silver filament in the insufficiently washed photographs and only a limited amount of colloidal silver, see Table 3.
There was greater variation in the size and shape of the historical silver filaments than the test photographs and the silver filaments were generally more rounded with fewer long strands.
Three phase morphologies were observed in the heavily drawn Cu 24 wt% Ag wires: fine silver filaments, thick silver lamellae, and copper-rich α phase.
Images at × 150,000 were used to calculate the area of the silver filaments and the size and number of colloidal silver particles.
In the fibre based papers there were small colloidal silver particles (0 10 nm) quite widely and evenly dispersed around the silver filaments.
TEM has been widely used to study the effects of chemicals and environmental conditions on silver filaments [15 17] again largely on film.
The silver filaments in the test photographs for all paper types and processing methods were relatively evenly distributed between the baryta layer and the starch coating.
A TEM image of an un-aged insufficiently washed test photograph was examined and showed a lack of either silver filaments or colloidal silver particles, so silver sulfide formation was discounted.
Before artificial ageing the filaments were often more fragmented but with ageing became increasingly homogeneous indicating colour change was probably due to silver sulfide formation around the silver filaments.
The sulfur appears to have had less impact on the physical shape of the silver filaments so colour differences may therefore be due to very thin layers of silver sulfide or colloidal silver sulfide as described by Ware [9].
In the resin coated papers the silver filaments were not quite as homogeneous and large amounts of colloidal silver were seen in the upper layers of the cross section at both 50 °C and 70% and 50 °C and 90%.
