Abstract: A gas sensor system includes a membrane electrode assembly including a polymer electrolyte membrane and electrode layers disposed on opposing sides of the membrane, where an anode side of the sensor is defined at first side of the assembly and a cathode side of the sensor is defined at a second side of the assembly . The gas sensor is configured to detect a gas in an environment (e.g., a housing, a pipe, an open environment, etc.) by measuring an open circuit voltage between the anode and the cathode sides of the assembly. The gas sensor provides a rapid response that measures gas concentration in the environment and is further durable, reliable and relatively inexpensive to manufacture.

Abstract: A gas sensor system includes a membrane electrode assembly including a polymer electrolyte membrane and electrode layers disposed on opposing sides of the membrane, where an anode side of the sensor is defined at first side of the assembly and a cathode side of the sensor is defined at a second side of the assembly. The gas sensor is configured to detect a gas in an environment (e.g., a housing, a pipe, an open environment, etc.) by measuring an open circuit voltage between the anode and the cathode sides of the assembly. The gas sensor provides a rapid response that measures gas concentration in the environment and is further durable, reliable and relatively inexpensive to manufacture.

Abstract: The invention provides a spinnerette assembly for multicomponent hollow fibers of the sheath/core type in which the channel for supplying the sheath material is located at a distance from the extrusion orifice of the spinnerette of no more than one-half of the width of the extrusion orifice. The spinnerette ensures uniform supply of the sheath material to the hollow fiber.

Abstract: A laser cutting method for complex capillaries wherein a multi-mode beam from a solid-state is reduced to predominantly a single mode and focused to a spot about 40 microns in diameter. The laser is focused about 0.2 to 0.3 mm above the work piece. The predominantly single mode is a TEMoo mode. By recutting the capillary slots with the laser, metal oxide particles condensed from the vapor phase and resolidified molten metal on the walls of the slots are removed.

Abstract: Brittle fibers such as ceramic or carbon fibers are protected by a shroud of thermoplastic material surrounding the core. Such enshrouded yarns facilitate formation of fiber preforms used in the preparation of composite materials.

Abstract: An electrode for use with electric discharge machining in forming a complex spinneret orifice having concentric annular passages is made of a plurality of concentric male segments formed to correspond to the configuration of the passages.