Nanofiber production device and nanofiber production method

1. A nanofiber production device which produces nanofibers by stretching, in a space, a solution, said nanofiber production device comprising:

an effusing body which effuses the solution into the space by centrifugal force;

a driving source which rotates said effusing body;

a supplying electrode which supplies charge to the solution via said effusing body, said supplying electrode being placed at a predetermined distance from said effusing body;

a charging electrode to which a potential of reverse polarity to a polarity of said effusing body is applied, said charging electrode being placed at a predetermined distance from said effusing body;

a charging power source which applies a predetermined voltage between said supplying electrode and said charging electrode;

a collecting device which collects the nanofibers; and

an attracting device which attracts the nanofibers to said collecting device.

2. The nanofiber production device according to claim 1 ,

wherein said supplying electrode is placed at a distance from said effusing body, the distance being in a range where electrical conduction between said supplying electrode and said effusing body is ensured.

3. A nanofiber production device which produces nanofibers by stretching, in a space, a solution, said nanofiber production device comprising:

an effusing body which effuses the solution into the space by centrifugal force;

a driving source which rotates said effusing body;

a supplying electrode which supplies charge to the solution via said effusing body, said supplying electrode being placed at a predetermined distance from said effusing body,

a charging electrode to which a potential of reverse polarity to a polarity of said effusing body is applied, said charging electrode being placed at a predetermined distance from said effusing body, and

a charging power source which applies a predetermined voltage between said supplying electrode and said charging electrode,

wherein said supplying electrode includes a pointed portion which is sharp at a tip and oriented toward said effusing body.

4. The nanofiber production device according to claim 3 ,

wherein said pointed portion extends toward said effusing body and consists of a plurality of members each having a needle-shaped tip or a thread-shaped tip.

5. A nanofiber production device which produces nanofibers by stretching, in a space, a solution, said nanofiber production device comprising:

an effusing body which effuses the solution into the space by centrifugal force;

a driving source which rotates said effusing body;

a supplying electrode which supplies charge to the solution via said effusing body, said supplying electrode being placed at a predetermined distance from said effusing body;

a charging electrode to which a potential of reverse polarity to a polarity of said effusing body is applied, said changing electrode being placed at a predetermined distance from said effusing body; and

a charging power source which applies a predetermined voltage between said supplying electrode and said charging electrode,

wherein said effusing body includes, in a portion opposing said supplying electrode, a receiving portion which is sharp at a tip and protrudes in a radial direction.

6. A nanofiber production method in which nanofibers are produced by stretching, in space, a solution, said nanofiber production method comprising:

effusing the solution, from an effusing body that is rotated by a driving source, into the space by centrifugal force;

supplying electric charge to the solution via the effusing body from a supplying electrode placed at a predetermined distance from the effusing body;

applying a predetermined voltage between a charging electrode and the supplying electrode using a charging power source, the charging electrode and the supplying electrode being placed at a predetermined distance from the effusing body;

attracting the nanofibers produced in the space to a collecting device using an attracting device; and

collecting the nanofibers using the collective device.