Magnetic nanoparticle embedded nanofibrous membrane

Patent metadata

Field	Value
Publication number	US-2017239393-A1
Application number	US-201515113633-A
Country	US
Kind code	A1
Filing date	Jan 23, 2015
Priority date	Jan 23, 2014
Publication date	Aug 24, 2017
Grant date	—

Abstract

Various examples are provided for magnetic particle imbedded nanofibrous membranes. In one example, among others, a nanofibrous membrane includes one or more electrospun nanofibers forming form a layer of nanofibers, and a plurality of magnetic nanoparticles embedded in the one or more electrospun nanofibers. In another example, a method includes generating one or more electrospun nanofibers including magnetic nanoparticles from one or more nozzles positioned over a substrate to form a magnetic nanofibrous layer, and affixing the magnetic nanofibrous layer to a support structure. In another example, a system includes a magnetic nanofibrous membrane affixed to a support structure, and a magnetic field generator configured to generate a magnetic field that passes through the magnetic nanofibrous membrane.

First claim

Therefore, at least the following is claimed:

1 . A nanofibrous membrane, comprising:
one or more electrospun nanofibers forming form a layer of nanofibers; and a plurality of magnetic nanoparticles embedded in the one or more electrospun nanofibers.

2 . The nanofibrous membrane of claim 1 , wherein the nanofibrous membrane is affixed to a support structure.

3 . The nanofibrous membrane of claim 1 , wherein the nanofibrous membrane is exposed to a magnetic field.

4 . The nanofibrous membrane of claim 3 , wherein the magnetic field is time varying.

5 . The nanofibrous membrane of claim 3 , wherein deflection of the nanofibrous membrane is controlled by the magnetic field.

6 . The nanofibrous membrane of claim 1 , wherein the nanofibrous membrane is a tissue scaffold.

7 . The nanofibrous membrane of claim 6 , wherein the nanofibrous membrane is designed with a resonant frequency in the range of about 4 Hz to about 5 Hz.

8 . The nanofibrous membrane of claim 1 , wherein the plurality of magnetic nanoparticles comprise iron oxide nanoparticles.

9 . The nanofibrous membrane of claim 1 , wherein the one or more electrospun nanofibers comprise a biodegradable polymer.

10 . The nanofibrous membrane of claim 9 , wherein the one or more electrospun nanofibers comprise polycaprolactone.

11 . A method, comprising:
generating one or more electrospun nanofibers from one or more nozzles positioned over a substrate to form a magnetic nanofibrous layer, the electrospun nanofibers including a plurality of magnetic nanoparticles; and affixing the magnetic nanofibrous layer to a support structure.

12 . The method of claim 11 , further comprising separating the magnetic nanofibrous layer from the substrate.

13 . The method of claim 12 , wherein a first portion of the support structure is affixed to a first side of the magnetic nanofibrous layer before separating the magnetic nanofibrous layer from the substrate and a second portion of the support structure is affixed to a second side of the magnetic nanofibrous layer after separating the magnetic nanofibrous layer.

14 . The method of claim 12 , further comprising vacuum drying the magnetic nanofibrous layer.

15 . The method of claim 11 , wherein the substrate is a silicon wafer.

16 . The method of claim 11 , wherein the support structure is a printed circuit board.

17 . The method of claim 11 , further comprising patterning the layer of electrospun nanofibers.

18 . The method of claim 17 , wherein the layer of electrospun nanofibers is patterned using a UV lithography process.

19 . A system, comprising:
a magnetic nanofibrous membrane affixed to a support structure; and a magnetic field generator configured to generate a magnetic field that passes through the magnetic nanofibrous membrane.

20 . The system of claim 19 , further comprising a control system configured to control the strength of the magnetic field generated by the magnetic field generator.

Assignees

• Univ Florida

Inventors

• Yoon Yong-Kyu
• Fang Sheng-Po

Classifications

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• A61L27/56

  Porous materials, {e.g. foams or sponges} · CPC title

• A61L27/042

  Iron or iron alloys · CPC title

• A61L27/50

  Materials characterised by their function or physical properties {, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials} · CPC title

• D01D5/0007

  Electro-spinning (non-woven fabrics produced by electro-spinning D04H1/728) · CPC title