Magnetospinning apparatus and methods of use

Abstract

Embodiments of the present disclosure provide magneto-spinning apparatus, methods of use, magnetospun material (e.g., a fiber such as a magnetic fiber), and the like.

What is claimed is: 
     
         1 . A magneto-spinning apparatus, comprising
 a device that delivers a fiber precursor material, and   a magnet positioned a distance from the device, wherein the fiber precursor material is drawn to the magnet to form a fiber.   
     
     
         2 . The magneto-spinning apparatus of  claim 1 , further comprising one or more posts, wherein the magnet and the one or more posts are positioned a distance from one another so that the fiber extends the distance between the magnet and the post upon movement of the magnet and/or the post. 
     
     
         3 . The magneto-spinning apparatus of  claim 1 , wherein the magnet and the post are positioned on a structure. 
     
     
         4 . The magneto-spinning apparatus of  claim 3 , wherein the magnet and a post are positioned a distance from one another on the structure so that as the structure moves, the fiber spans the distance between the magnet and the post. 
     
     
         5 . The magneto-spinning apparatus of  claim 4 , wherein the magnet and a post are positioned on opposite sides of the structure. 
     
     
         6 . The magneto-spinning apparatus of  claim 1 , wherein the device includes a syringe. 
     
     
         7 . The magneto-spinning apparatus of  claim 1 , wherein the fiber precursor material is a magnetic fiber precursor material. 
     
     
         8 . The magneto-spinning apparatus of  claim 1 , wherein the fiber is a magnetic fiber. 
     
     
         9 . A method of forming a fiber, comprising:
 drawing a fiber precursor material from an aperture of a device towards a magnet positioned a distance from the aperture to form a fiber; and   moving the magnet to extend the length of the fiber.   
     
     
         10 . The method of  claim 9 , further comprising:
 moving the magnet so that the fiber wraps around a portion of a post positioned a distance from the magnet.   
     
     
         11 . The method of  claim 10 , further comprising: moving the magnet, post, or both so that the fiber extends from the magnet to the post, is wrapped around a portion of the post, and extends back toward the magnet. 
     
     
         12 . The method of  claim 9 , wherein the fiber precursor material includes a polymer dissolved in a solvent to form a polymer mixture, and the polymer mixture is mixed with magnetic particles. 
     
     
         13 . The method of  claim 12 , wherein the polymer is selected from the group consisting of: nylon, polyethylene, polystyrene, polylactide, polyglycolide, polypropylene, polyacetylene, polyphenylene vinylene, polypyrrole, polyester, polyurethane, polycaprolactone, combinations of these, and blends of these. 
     
     
         14 . The method of  claim 9 , The method of  claim 10 , wherein the fiber precursor material includes a dopant, wherein the dopant is selected from the group consisting of: a phosphorescent material, a fluorescent material, a SWCNT, a MWCNT, hexagonal BN nanotube, graphite, graphene, graphene oxide, silica, TiO 2 , an organic UV filter, a protein, a cell, a peptide, a stem cell, a therapeutic agent, and a combination thereof. 
     
     
         15 . The method of  claim 12 , wherein the magnetic particles are selected from the group consisting of: Fe 3 O 4 ; Fe 2 O 3 ; Ni; Co; Nd 2 Fe 14 B; SmCo 5 ; Al x Ni y Co z Cu a Ti b Fe c , with x, y, z, a, b and c such that the composition has about 8-12 wt % of Al, about 15-26 wt % of Ni, about 5-24 wt % Co, about 0-6 wt % of Cu, about 0-1 wt % of Ti and the remainder to complete 100 wt % in Fe; [Cr(NH 3 ) 6 ]Br 2 ; (NH 4 ) 2 [Mn(SO 4 ) 2 ]; (NH 4 )[Fe(SO 4 ) 2 ]; VO(acac) 2 ; and a combination thereof. 
     
     
         16 . The method of  claim 13 , wherein the magnetic particles are in a magnetic fluid. 
     
     
         17 . The method of  claim 12 , wherein the magnetic fiber has a diameter of about 50 nm to 20 μm. 
     
     
         18 . The method of  claim 12 , wherein the solvent is selected from the group consisting of: water, chloroform, ethanol, cyclohexane, tetrahydrofuran and a combination thereof. 
     
     
         19 . The method of  claim 12 , wherein the solvent has a low dielectric constant.