Aspects of the present invention describe a method and apparatus for automating analysis of genetic samples. The metamaterial properties permit significant size reduction over a conventional N-way radial power combiner or divider. The pressure sensing element is coated with a fluororesin thin film having a cross-linked structure, and the pressure sensing element and the fluororesin base are welded together via the fluororesin thin film having a cross-linked structure. The terminal wireless sensor unit in each chain of wireless sensor units is adapted to communicate wirelessly with at least one backhaul unit of plural backhaul units; and the backhaul units are adapted to communicate with a central computer.