Microfluidic analysis of pressure drop and flow behavior in hypertensive micro vessels

Verfasser / Beitragende:
[Ruiqing Hu, Fen Li, Jiaqi Lv, Ying He, Detang Lu, Takashi Yamada, Naoki Ono]
Ort, Verlag, Jahr:
2015
Enthalten in:
Biomedical Microdevices, 17/3(2015-06-01), 1-9
Format:
Artikel (online)
ID: 605479801
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024 7 0 |a 10.1007/s10544-015-9959-4  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10544-015-9959-4 
245 0 0 |a Microfluidic analysis of pressure drop and flow behavior in hypertensive micro vessels  |h [Elektronische Daten]  |c [Ruiqing Hu, Fen Li, Jiaqi Lv, Ying He, Detang Lu, Takashi Yamada, Naoki Ono] 
520 3 |a The retinal arterial network is the only source of the highly nutrient-consumptive retina, thus any insult on the arteries can impair the retinal oxygen and nutrient supply and affect its normal function. The aim of this work is to study the influences of vascular structure variation on the flow and pressure characteristics via microfluidic devices. Two sets of micro-channel were designed to mimic the stenosed microvessels and dichotomous branching structure in the retinal arteries. Three working fluids including red blood cell (RBC) suspension were employed to investigate the pressure drop in the stenosed channel. The flow behaviors of RBC suspensions inside the micro channels were observed using high speed camera system. Pressure drop of different working fluids and RBC velocity profiles in the stenosed channel were obtained. Moreover, hematocrit levels of RBC suspensions inside the bifurcated channels were analyzed from the sequential images of RBC flow. The results of the flow in the stenosed channel show that RBCs drift from the center of the channels, and RBC velocity is influenced not only by the inlet flow rate but also the interaction between RBCs. The measured pressure drops in the stenosed channel increase notably with the increase of fluid viscosity. Furthermore, the dimensionless pressure drop due to the stenosis decreases with Reynolds number. On the other hand, the results of flow through the bifurcated channels show that as the ratio of the daughter-branch width to the mother-channel width increases, the ratio of hematocrit in two connected branches (Ht/Hd) decreases, which is in favorable agreement with the available analysis results. 
540 |a Springer Science+Business Media New York, 2015 
690 7 |a Microfluidic device  |2 nationallicence 
690 7 |a Pressure drop  |2 nationallicence 
690 7 |a Hematocrit  |2 nationallicence 
690 7 |a RBC velocity  |2 nationallicence 
690 7 |a Fahreaus effect  |2 nationallicence 
700 1 |a Hu  |D Ruiqing  |u Department of Modern Mechanics, University of Science and Technology of China, 230027, Hefei, Anhui, China  |4 aut 
700 1 |a Li  |D Fen  |u Department of Modern Mechanics, University of Science and Technology of China, 230027, Hefei, Anhui, China  |4 aut 
700 1 |a Lv  |D Jiaqi  |u Department of Modern Mechanics, University of Science and Technology of China, 230027, Hefei, Anhui, China  |4 aut 
700 1 |a He  |D Ying  |u School of Energy and Power Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, China  |4 aut 
700 1 |a Lu  |D Detang  |u Department of Modern Mechanics, University of Science and Technology of China, 230027, Hefei, Anhui, China  |4 aut 
700 1 |a Yamada  |D Takashi  |u College of Engineering, Shibaura Institute of Technology, 135-8548, Tokyo, Japan  |4 aut 
700 1 |a Ono  |D Naoki  |u College of Engineering, Shibaura Institute of Technology, 135-8548, Tokyo, Japan  |4 aut 
773 0 |t Biomedical Microdevices  |d Springer US; http://www.springer-ny.com  |g 17/3(2015-06-01), 1-9  |x 1387-2176  |q 17:3<1  |1 2015  |2 17  |o 10544 
856 4 0 |u https://doi.org/10.1007/s10544-015-9959-4  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s10544-015-9959-4  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Hu  |D Ruiqing  |u Department of Modern Mechanics, University of Science and Technology of China, 230027, Hefei, Anhui, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Li  |D Fen  |u Department of Modern Mechanics, University of Science and Technology of China, 230027, Hefei, Anhui, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Lv  |D Jiaqi  |u Department of Modern Mechanics, University of Science and Technology of China, 230027, Hefei, Anhui, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a He  |D Ying  |u School of Energy and Power Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Lu  |D Detang  |u Department of Modern Mechanics, University of Science and Technology of China, 230027, Hefei, Anhui, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Yamada  |D Takashi  |u College of Engineering, Shibaura Institute of Technology, 135-8548, Tokyo, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Ono  |D Naoki  |u College of Engineering, Shibaura Institute of Technology, 135-8548, Tokyo, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Biomedical Microdevices  |d Springer US; http://www.springer-ny.com  |g 17/3(2015-06-01), 1-9  |x 1387-2176  |q 17:3<1  |1 2015  |2 17  |o 10544