ts with increasingly smaller dimensions as compared to conventional planar FETs. In its basic form, a semiconductor nanowire FET includes a source, a drain and one or more nanowire channels between the source and the drain. A gate electrode, which wraps around the one or more nanowire channels, regulates electron flow through the nanowire channel between the source and drain.
Despite being promising candidates for the end of the CMOS road map due to their excellent electrostatic control, semiconductor devices containing prior art gate-all-around semiconductor nanowires oftentimes sag and buckle due to gate stress or stress relaxation. Moreover, and for a gate last process, there are currently no good solutions to remove the sacrificial gate material under the semiconductor nanowires.

Straight through flow filter elements have been used in systems for cleaning fluid passing therethrough. Straight through flow filter elements typically will have an inlet face and an oppositely disposed outlet face. In this manner, fluid flows in one certain direction upon entering the filter element at the inlet face and will have the same direction of flow as it exits the outlet face. Typically, straight through flow filter elements will be installed in a duct or housing of some type. After a period of use, the filter element will require servicing, either cleaning or a complete replacement. If it is difficult or inconvenient to service the filter element, the user may delay the proper servicing, which can cause damage to whatever system is being filtered.
Improvements to straight through flow filter elements are desirable.

Employers often provide employees with various benefits upon commencement of employment. These benefits typically include a prescription drug plan. Prescription drug plans can be quantified by their respective spend (i.e., the cost of prescription drugs under the plan) and trend (i.e., the rate of change in prescription drug spending over time). An employer's goal is to affect prescription drug spending under