605 research outputs found
Effect of Functional Nano Channel Structures Different Widths on Injection Molding and Compression Molding Replication Capabilities
Influence of process parameters on edge replication quality of lab-on-a-chip micro fluidic systems geometries
Replication fidelity assessment of large area sub-ÎĽm structured polymer surfaces using scatterometry.
Structural properties of erbium-activated silica-titania glasses: modeling by molecular dynamics method
Here, we use molecular dynamics simulation to reconstruct a silica-titania glass with a Ti/Si atomic ratio of 8.5% activated by 0.7 at% of erbium. These quantities are chosen because they give both refractive index and optically ions concentration suitable for applications. We use a modified Born-Mayer-Huggins potential taking into account a three- body interaction. The distribution of TiO4 and SiO4 units as well as the bridging to non-bridging oxygen ratios are evaluated. The local environment of rare-earth ions is also analyzed. In particular, the clustering of erbium is discussed. From the simulated structure, the crystal-field strength is computed and discussed according to the Er3+ local environment. Finally, results are compared with information obtained by Raman and photoluminescence spectra
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