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The effect of pore size and uniformity on the response of nanoporous anodized alumina to ammonia at room temperature, 23 o C, is reported. Pore sizes examined range from 13.6 to 48nm, with pore size standard deviations ranging from 2.6 to 7.8nm. The nanoporous alumina films were used in conjunction with 98.5 and 32.5MHz surface acoustic wave (SAW) devices, and as impedance-based sensors, both...
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