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متالوژی::
دیوارۀ سیلیس
The concentration should be as high as possible to favor the drug impregnation on the silica walls.
The surface area of the host matrix is a very important parameter since the physical adsorption of a molecule is a surface phenomenon, in which only the molecules that are in contact with the silica wall will be retained.
In other words, the high resolution of the microscope allows the differentiation between pore domains and the silica wall, which makes this technique a perfect tool to find out where the molecules are being confined.
Apart from confirming the ordered mesostructure of the matrix, the HAADF-STEM images taken when the electron beam illuminated the wall confirm that the silica walls are composed of Si and O, as was expected.
It seems quite straightforward that to modify the type of the host-guest interaction, a modification on the silica walls should be performed.
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