| Popis: |
The main practical method for fabricating fine optical structures involves mounting them on the surface of a substrate. Although there are other methods for fabricating structures inside materials, none involves the fabrication of optical structures, particularly resonator structures. Thus, a novel method, namely, infill printing in which a resonator structure is embedded in a nanoporous film, is demonstrated to fabricate optical structures. The highly transparent nanoporous film comprises nonspherical SiO2 nanoparticles with a diameter of ≈12 nm. The voids in the nanoporous film are interconnected, facilitating the penetration of polymers exhibiting a diameter of 2–3 nm. By filling the voids in the nanoporous film with a hyperbranched polymer via the printing method, the refractive index can be uniformly controlled, and the optical structures can be embedded. Using infill printing, this is the first time a microdisk resonator exhibiting a reasonable quality factor inside a nanoporous film is successfully demonstrated just as “writing on paper.” |
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