Please use this identifier to cite or link to this item:
Title: Margination of Micro- and Nano-Particles in Blood Flow and its Effect on the Efficiency of Drug Delivery
Authors: Müller, K
Ferosov, DA
Gompper, G
4th Micro and Nano Flows Conference (MNF2014)
Keywords: Red blood cell;Drug carrier;Flow migration;Margination probability;Particle distribution;Dissipative particle dynamics
Issue Date: 2014
Publisher: Brunel University London
Citation: 4th Micro and Nano Flows Conference, University College London, UK, 7-10 September 2014, Editors CS König, TG Karayiannis and S. Balabani
Series/Report no.: ID 156
Abstract: Drug delivery by various micro- and nano-carriers offers the possibility of controlled transport of pharmaceuticals to targeted sites (e.g., cancerous tissue). Even though the fabrication of carriers of different sizes and shapes with a number of functionalities has made much progress in the last decade, their delivery including controlled particle distribution and adhesion within the body remains a great challenge. The adhesion of micro- and nano-carriers in blood flow is strongly affected by their distribution within the vessel cross-section. To investigate the adhesion potential of carriers of different shapes and sizes, we employ mesoscopic hydrodynamic simulations of blood flow in order to predict margination of carriers or their migration properties toward vessel walls. The margination of carriers is studied for a wide range of hematocrit values, and flow rates, using a two-dimensional blood-flow model. Two different particle shapes (spherical and ellipsoidal) and various sizes, ranging from about hundred nanometers to several micrometers, are considered. We find that the margination properties of particles worsen with decreasing carrier size. Spherical particles yield slightly better margination than ellipsoidal particles; however, adhesion of ellipsoidal carriers is expected to be superior due to a larger area for adhesive interactions. As a conclusion, micron-size ellipsoidal particles seem to be favorable for drug delivery in comparison to sub-micron particles and spherically shaped carriers.
Description: This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the Process Intensification Network, the Institution of Mechanical Engineers, the Heat Transfer Society, HEXAG - the Heat Exchange Action Group, and the Energy Institute, ASME Press, LCN London Centre for Nanotechnology, UCL University College London, UCL Engineering, the International NanoScience Community,
ISBN: 978-1-908549-16-7
Appears in Collections:Brunel Institute for Bioengineering (BIB)
The Brunel Collection

Files in This Item:
File Description SizeFormat 
MNF2014_margination.pdf580.34 kBAdobe PDFView/Open

Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.