Method of analysis in optical measurements

Details Method of analysis in optical measurements Method of analysis in optical measurements

2006-02-28

2009-12-01

Nguyen, Sang (Department: 2886)

Optics: measuring and testing

For size of particles

C356S334000, C204S450000, C427S078000, C427S010000

Reexamination Certificate

active

07626698

ABSTRACT:
The method of the present invention generates a regularly lined electric field inside a container1retaining a sample formed by dispersing particle groups in a liquid by a voltage being applied to an electrode pair2provided in the container1, generates a diffraction grating by a density distribution of the particle groups in the sample inside the container1, and when acquiring a diffusion coefficient of particles from a temporal variation of intensity in a disappearing process of a diffracted light obtained by irradiating a beam of light to the diffraction grating generated by the density distribution of the particle groups, performs a particle size analysis of the particle groups by using an approximate analysis expression of a diffracted light attenuation, I(t)=∝exp[−2q2Dt] which uses q=2π/Λ defined by a particle concentration modulation period Λ in the density distribution diffraction grating of the particle groups, and the Einstein-Stokes relation. And if particle groups having a known particle size are dispersed in a liquid to be measured and similar measurements are performed, viscosity analysis of the liquid to be measured can be performed.

REFERENCES:
patent: 6060113 (2000-05-01), Banno et al.
patent: 6193866 (2001-02-01), Bader et al.
patent: 6537829 (2003-03-01), Zarling et al.
patent: 2008/0049213 (2008-02-01), Wada
patent: 2008/0192252 (2008-08-01), Moriya et al.
patent: 2005-181216 (2005-07-01), None
patent: WO-2006/025158 (2006-03-01), None
International Search Report for the Application No. PCT/JP2006/303791 mailed Jun. 6, 2006.
Terazima, Masahide, “Translational Diffusion of Intermediate Species in Solutions”, Research on Chemical Intermediates, 1997, vol. 23, No. 9, pp. 853-901.
Wada, Yukihisa et al., “Yuden Eido O Mochiita Seitai Bunshi Kakusan Keisoku” (“Measurement of Biological Molecule Diffusion Speed Using Dielectrophoresis”), The Laser Society of Japan Gakujutsu Koenkai Dai 25 Kai Nenji Taikai Koen Yokoshu, Jan. 2005, p. 265, 21pll12.
Wada, Yukihisa et al., “Kato Kaisetsu Koshiho O Mochiita Nano Ryukei Keisoku Shuho No Kento” (“Nano-particle Measurements with Transient Grating Method”), 2005 Nen (Heisei 17 Nen) Shunki Dai 52 Kai The Japan Society of Applied Physics Kaikei Rengo Koenkai Koen Yokoshu, Separate vol. 3, Mar. 2005, p. 1142, 31p-ZF-21.

Affiliated with

Also associated with

Rating

Method of analysis in optical measurements does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of analysis in optical measurements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of analysis in optical measurements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4065869