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강병준(Byungjun Kang),조승한(Seunghan Jo),류찬열(Chanryeol Rhyou),이형석(Hyungsuk Lee) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
Actin, one of primary cytoskeletal proteins, forms bundles or networks which provide mechanical rigidity to cells. Those high-order structures are rather heterogeneous than homogeneous in order to perform various cellular functions including migration, division, and contraction. However, the effect of mechanical stimulation on actin network organization remains unclear. We hypothesize that the shear produced by the intracellular flow plays a role in determining the heterogeneity of actin networks. Here we develop a computational model of actin filament network and investigate how the mechanical flow influences on the network organization. We compare actin networks formed in the absence and presence of mechanical stimulation in terms of degree of filament alignment and thickness of actin bundle. Our results suggest that the mechanical stimulation contributes to the spatiotemporal regulation of the actin cytoskeleton structures.
이형석(Hyungsuk Lee),백준기(Junki Baek),강병준(Byungjun Kang),류찬열(Chanryeol Rhyou) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Surface acoustic wave devices have been widely used for separation, sorting, and mixing of particles in the fields of colloidal sciences, biochemical, and biomedical engineering. Here, we investigate the effect of the sound speed of channel and fluid on the particle response in a surface acoustic wave device. The computational and experimental results demonstrate how the particle alignment pattern is altered due to the mismatch of their sound speeds. Our study provides an intuition into the design on acoustic device for manipulation of particles in a desired manner.