Apparatus and method using an electric field for creating uniform nanofiber patterns on nonconductive materials to enhance filtration and for embedment of fibers into materials for other applications

Clayton, A. C., Walls, H. J., Rieth, A., & Ensor, D. S. (2019). Apparatus and method using an electric field for creating uniform nanofiber patterns on nonconductive materials to enhance filtration and for embedment of fibers into materials for other applications. (U.S. Patent No. 10,188,973). http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=10,188,973.PN.&OS=PN/10,188,973&RS=PN/10,188,973

Abstract

A filtration device including a base filtration material having openings for fluid flow there through and a filtration medium. The filtration medium includes a plurality of patterned nanofibers formed on the base filtration material. The filtration medium has a figure of merit greater than 30 kPa.sup.-1, where the figure of merit is given by -Log (Pt)/.DELTA.P, where Pt is the fractional penetration of a specific aerosol particle diameter and .DELTA.P is a pressure drop across the filtration medium corresponding to a face velocity of 5.3 cm/s and particle size of 0.3 microns.

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