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Isothermal annealing above 1250 °C has been reported to reduce the dislocation density in multicrystalline silicon (mc-Si), presumably by pairwise dislocation annihilation. However, this high-temperature process may also cause significant impurity contamination, canceling out the positive effect of dislocation density reduction on cell performance. Here, efforts are made to annihilate dislocations...
Continuous monitoring of fluids in medical tubing is desired for point-of-care clinical diagnostics. In this work, we incorporate a nanostructured surface-enhanced Raman scattering (SERS) sensor into flexible tubing commonly used for intravenous drug delivery and urinary catheters. We investigate the detection of promethazine (pain medication) and urea (common metabolite found in urine) as model systems...
We have demonstrated a novel method utilizing carbon nanotube (CNT) arrays as latching surface for silicon plastic deformation applications where the high temperature process is required. The CNT arrays integrated on microstructures maintain the strained shapes of the microstructures in the high temperature environments. In order to demonstrate the proposed method, arrays of angular vertical comb-drive...
We demonstrate a surface-enhanced Raman scattering substrate consisting of a closely spaced metal nanodome array fabricated on flexible plastic film. We used a low cost, large area replica molding process to produce a 2-dimensional periodic array of cylinders that is subsequently overcoated with SiO2 and silver thin films to form dome-shaped structures. Finite element modeling was used to investigate...
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