Journal of Northeastern University(Natural Science) ›› 2023, Vol. 44 ›› Issue (6): 906-912.DOI: 10.12068/j.issn.1005-3026.2023.06.019

• Biologic Engineering • Previous Articles    

Study on Morphology of Red Blood Cell in Micro-channel Towards Vessel-on-Chip

HU Sheng1,2, YE Jun-yan1, ZHAO Yong1,2   

  1. 1. School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China; 2. Hebei Key Laboratory of Micro-nano Precision Optical Sensing and Measurement Technology, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China.
  • Published:2023-06-20
  • Contact: HU Sheng
  • About author:-
  • Supported by:
    -

Abstract: Red blood cell (RBC), undertaking the significant work of oxygen transport to maintain human life, could shuttle spindly capillaries by their own stretching and contractile properties due to their biconcave discoid shape and hyperelastic responses. In this paper, the coupled fluid-solid module in finite element software COMSOL was used to study the dynamic simulation of RBC when the three factors, including capillary width, plasma viscosity, and blood flow rate were considered. The results implied that the RBC could easily pass through capillary with hole size of 3 μm, and the aqueous shear stress was 4.5 times greater than that in the capillary with 6 μm hole size. Meanwhile, the plasma viscosity of 5.5 mPa·s induced parachute-like formation of RBC. Furthermore, biconcave structure in the center gradually disappeared and turned into bulge along the flow direction. With regard to the study on fluidic velocities in T-shaped and Y-shaped micro-channel, both results indicated that the asymmetric structure caused the falcate shape of RBC. In addition, the higher fluidic velocity in the other branch channel, the easier the convergence leaded to the disappearance of falcate shape and the rod posture lying flat flowing in the solution.

Key words: vessel-on-chip; red blood cell (RBC); hydrodynamics; hyperelastic material; COMSOL

CLC Number: