Ulster University Logo

Ulster Institutional Repository

Investigating the Effects of Fluid Shear Forces on Cellular Responses to Profiled Surfaces in-Vitro: A Computational and Experimental Investigation

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Brown, A and Meenan, BJ (2007) Investigating the Effects of Fluid Shear Forces on Cellular Responses to Profiled Surfaces in-Vitro: A Computational and Experimental Investigation. In: 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Lyon, France. UNSPECIFIED. 4 pp. [Conference contribution]

[img]PDF - Published Version
Indefinitely restricted to Repository staff only.

561Kb

Abstract

The flow conditions in a parallel plate “bioreactor” have been modeled using Computational Fluid Dynamics (CFD) and characterized experimentally using acomputer controlled flow regulation apparatus and associated flow visualization techniques. The conditions required to induce flow characteristics appropriate for standard in-vitro cell processes on flat substrates have been identified from a consideration of data from previous studies. The effects of changing the surface topography of the substrate on which the cells are grown has been investigated by forming specific micrometer scale features via hot embossing on polymeric plates. The effect that various features have on the flow that occurs at the boundary layer adjacent to the surface in the parallel plate chamber has been determined. The results for studies undertaken in a parallel platechamber operating under computer control are presented here. Flow characteristics have been determined using feedback from the sensors within the system and validated by direct flow visualization using fluorescent beads and modeled using a CFD routine. The system exhibits well developed laminar flow and is capable of delivering surface shear stresses up to 2.4 Pa on a planar surface. As such, it is suitable for evaluating in-vitro cellprocesses. The effects that the features produced by hot embossing of a Poly Methyl Methacrylate (PMMA) surface have been tested in the flow chamber and their influence onshear stress observed.

Item Type:Conference contribution (Paper)
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:7111
Deposited By:Professor Brian Meenan
Deposited On:20 Jan 2010 11:41
Last Modified:18 Aug 2011 11:08

Repository Staff Only: item control page