Systems and methods for formation and harvesting of nanofibrous materials

A non-woven sheet material comprising:

• at least a first non-woven sheet comprising nanotubes grown at a temperature ranging from 1100° C. to 1300° C. and having an aspect ratio of length to diameter greater than 10,000:1, wherein the nanotubes include a catalytic nanoparticle of ferromagnetic material and are arranged in an intermingled and overlapping fashion with one another;
• at least a second non-woven sheet comprising nanotubes grown at a temperature ranging from 1100° C. to 1300° C. and having an aspect ratio of length to diameter greater than 10,000:1, wherein the nanotubes are arranged in an intermingled
• and overlapping fashion with one another,
• a matrix material between the first non-woven sheet and the second non-woven sheet;
• and
• a plurality of stacked non-woven sheets comprising nanotubes grown at a temperature ranging from 1100° C. to 1300° C. and having an aspect ratio of length to diameter greater than 10,000:1, wherein the nanotubes include a catalytic nanoparticle of ferromagnetic material and are compacted against one another, wherein each non-woven sheet of nanotubes comprises individual nanotubes intermingled with one another such that the nanotubes overlap and form contact sites both within and between the non-woven sheets of nanotubes;
• and
• bonds, including one of van der Waal's, hydrogen, ionic, or a combination thereof, at (i) the contact sites between adjacent overlapping nanotubes within each stacked non-woven sheet of nanotubes such that the nanotubes within each stacked non-woven sheet are interconnected, and (ii) the contact sites between each consecutive stacked non-woven sheet layer of nanotubes such that each non-woven sheet layer are connected to form a substantially planar body comprising nanotubes with sufficient structural integrity to be handled as a sheet.