Page 56 - חוברת תזות הנדסה ירוקה 2023

From the findings obtained, it may be concluded that, at higher working temperatures, it is possible to create clusters of points with a wider variety of polymers. Under highly humid conditions, the water that surrounds the polymer causes it to gather inward )if it is hydrophobic( and, therefore, the size of the structured elements becomes smaller. The research findings showed that for NOA65-type ink, the intermolecular bonds between the ink and the surface are stronger than those between the ink and the cantilever. In this case, our results showed that the size of the elements was larger than those observed with NOA68-type ink. The PMMA polymer is hydrophobic, and the three types of surfaces we worked with are hydrophilic. Thus, it may be concluded that in the case of hydrophobic ink used on a hydrophilic surface, the ink molecules will not spread on the surface, meaning that the clusters will have a spherical base characterized by a small diameter and a larger cluster height.
Patterning by means of DPN is affected by: the solubility of the ink in water; the ink’s viscosity; the material’s stability; the ability to transfer the material into the water meniscus; and the adsorption of the material on the substrate. The correct choice of ink is critical for conducting DPN experiments; however, under the right conditions, this method allows the fabrication of new layers, while utilizing minimal space and lithography materials, in addition to saving on associated processes that are expensive and cumbersome. These advantages support the principles of green engineering.
Keywords: DPN, PMMA, waveguide, metasurfaces, coupling.
Publications:
This project was presented on a poster at the 23rd Sedeh Boqer Symposium on Solar Electricity Production held in Sept. 5-7, 2022 at the Blaustein Institutes for Desert Research.
Book Of Abstracts | Class 2022
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