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While metal fiber filters have successfully shown a high degree of particle retention functionality for various sizes of diesel engines with a low pressure drop and a relatively high filtration efficiency, little is known about the effects of lubricant-derived ash on the fiber filter systems. Sintered metal fiber filters (SMF-DPF), when used downstream from a diesel engine, effectively trap and oxidize diesel particulate matter via an electrically heated regeneration process where a specific voltage and current are applied to the sintered alloy fibers. In this manner the filter media essentially acts as a resistive heater to generate temperatures high enough to oxidize the carbonaceous particulate matter, which is typically in excess of 600°C.

Nanobridization is a nano-inspired process by which scalable material structures can be designed and manufactured by combining the concept of ‘Nano Free Volume’ with specific material molecules defining a systemic density (nano-density). This approach explores nanotechnology from a porosity perspective rather than nanoparticles thus minimizing health concerns with nanotechnology, while providing nanoporosity throughout the entirety of the composite system. Nanobridization may be viewed as a density system transformation of material heterogeneity utilizing a unified class of materials such as Polynanomers and in developing next generation structures such as Featherweight Carbon Fiber Reinforced Polymers (CFRP). Polynanomers are further defined by the incorporation of hollow carbon fibers, electrospun nano-fibers, nano-pores and carbon nanotubes (CNT) into this newly established type of matrix.