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Chalcogenide glasses have nonlinear refractive indices ∼200 times greater than fused silica, and offer windows of transparency extending far into the mid-IR. These properties make them interesting for supercontinuum (SC) generation at wavelengths beyond 2 μm. Various different waveguiding structures incorporating chalcogenide glasses have been reported in literature, including microstructured fibers...
The water absorption characteristics of a HTV silicone rubber material were investigated at different relative air humidity (RH). The two-sided water absorption process into disc-like HTV samples at different RH can be described by a Langmuir type diffusion model. The permeation process of water vapor through HTV discs was quantified by adjusting different constant RH at both sides of the discs. The...
Prototype Micromegas chambers are constructed by using several types of high resistivity sheet materials as anodes. The resistive sheet is glued to the metal readout surface by a resistive adhesive layer. The resistive materials studied include: resistive glass sheets with resistivity ~1010 Ω·cm, carbon-black loaded polycarbonate sheets with resistivity ~1011 Ω·cm and common glass sheets with resistivity...
Room temperature fabricated aluminum-doped zinc oxide (ZnO:Al) films were deposited by radio-frequency magnetron sputtering under pure Ar ambient. By investigating and controlling the sputtering parameters, such as relative position between target and substrate, and working pressure, high quality ZnO:Al films were obtained. Even without substrate heating during deposition or post annealing process,...
We report the observation of near-IR emission from Al-AlOx-Au tunnel junctions and a blurred-up peak at high applied voltage. We argue that it results from an interaction with near-IR surface plasmons.
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