Title:
MICROFLUIDIC DEVICE FOR DIFFERENTIAL PRESSURE VISCOMETER AND METHOD FOR DESIGNING SAME
Document Type and Number:
WIPO Patent Application WO/2018/128259
Kind Code:
A3
Abstract:
The present invention relates to a microfluidic device for a differential pressure viscometer and a method for designing the same, the device measuring the extensional viscosity of various fluids which include: a bio-related fluid such as mucus, joint fluid, or blood; a fluid such as paint or inkjet printer ink; and fuel oil, a polymer solution, etc. The present invention comprises: a sample microchannel in which extensional flow occurs at a predetermined extensional velocity; and a comparative microchannel in which the same pressure drop as that attributed to a shear flow in the sample microchannel occurs, and thus can measure the extensional viscosity at a constant extensional velocity (in a steady state). The present invention as describe above is advantageous in that the amount of a sample necessary for measurement can be reduced.
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Inventors:
LEE HEON SANG (KR)
KIM SEO GYUN (KR)
KIM SEO GYUN (KR)
Application Number:
PCT/KR2017/012591
Publication Date:
November 01, 2018
Filing Date:
November 08, 2017
Export Citation:
Assignee:
UNIV DONG A RES FOUND FOR IND ACAD COOP (KR)
International Classes:
G01N11/08; B01L3/00; G01N35/08
Foreign References:
| KR20110039823A | 2011-04-20 | |||
| KR20110090672A | 2011-08-10 | |||
| KR101551902B1 | 2015-09-09 | |||
| KR20150129709A | 2015-11-20 | |||
| JPH11194084A | 1999-07-21 | |||
| KR20150049443A | 2015-05-08 |
Attorney, Agent or Firm:
KIM, Sung-Hyun (KR)
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