The present invention comprises a method for forming a hardmask including the steps of depositing a polymeric preceramic precursor film atop a substrate; converting the polymeric preceramic precursor film into at least one ceramic layer, where the ceramic layer has a composition of SivNwCxOyHz where 0. The filter medium is moveable in a longitudinal direction, and at least a segment of the filter medium is used to filter a fluid. The latching arm has a fixed end on the connector body and a free distal end.