Title:
PROCESS FOR PRODUCING NANOPARTICLE, APPARATUS THEREFOR AND METHOD OF STORING NANOPARTICLE
Document Type and Number:
WIPO Patent Application WO/2004/020086
Kind Code:
A1
Abstract:
A process for producing nanoparticles, comprising irradiating laser beam irradiation zone (2a) of particle suspension to be treated (8) with laser beams so as to fracture the suspended particles at the laser beam irradiation zone (2a) into nanoparticles, wherein the laser beam irradiation zone (2a) of the suspension to be treated (8) is cooled. Each of the suspended particles is entirely cooled by cooling of the suspension to be treated (8). When the laser beam irradiation zone (2a) of the suspension to be treated (8) is irradiated with laser beams, laser beams are absorbed into the surface of suspended particles at the laser beam irradiation zone (2a). At that time, since the suspension to be treated (8) is cooled, a significant temperature difference occurs between the internal part and surface of suspended particles and between the surface of suspended particles and the suspension to be treated at the laser beam irradiation zone (2a), so that conversion to nanoparticles at high efficiency can be realized.
Inventors:
KAWAKAMI TOMONORI (JP)
LI BO (CN)
HIRAMATSU MITSUO (JP)
LI BO (CN)
HIRAMATSU MITSUO (JP)
Application Number:
PCT/JP2003/010962
Publication Date:
March 11, 2004
Filing Date:
August 28, 2003
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK (JP)
KAWAKAMI TOMONORI (JP)
LI BO (CN)
HIRAMATSU MITSUO (JP)
KAWAKAMI TOMONORI (JP)
LI BO (CN)
HIRAMATSU MITSUO (JP)
International Classes:
B01J19/00; B02C19/00; B01J19/12; C09C3/00; H01S3/00; (IPC1-7): B01J19/12
Foreign References:
| JP2001113159A | 2001-04-24 | |||
| JPH09171920A | 1997-06-30 | |||
| US5582957A | 1996-12-10 |
Other References:
See also references of EP 1541228A4
Attorney, Agent or Firm:
Hasegawa, Yoshiki (Ginza First Bldg. 10-6, Ginza 1-chom, Chuo-ku Tokyo, JP)
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