Nanotech 2002 Vol. 1
Nanotech 2002 Vol. 1
Technical Proceedings of the 2002 International Conference on Modeling and Simulation of Microsystems

Micro and Nano Fluidic Systems Chapter 2

Biochemical Binding in Microspheres-Based-Imunoassays

Authors: B. Prabhakarpandian, K.B. Shah, S. Sundaram and V.B. Makhijani

Affilation: CFD Research Corporation, United States

Pages: 92 - 95

Keywords: microsphere, bead, Immunoassay, binding, sensor, model conditions, high numerical diffusion

Microspheres (referred commonly as beads) are being extensively used in biochemical assays as supports for proteins, DNA, etc. We have successfully developed computational models for simulating sample detection using flowing beads. The model fully integrates Lagrangian transport of the beads, convective-diffusive transport of analyte and biomolecular binding reactions on the bead surfaces. The Eulerian-Lagrangian transport equations that govern the entire process are presented. Model inputs are the geometry, bead and sample transport properties, and surface binding kinetics along with assay protocol such as flow rates etc. with surface coverages on the beads as output. Quantitative capabilities of the model are demonstrated using an immunoassay [IL-2 binding with IL- 2Ra] in a typical Y-junction.

ISBN: 0-9708275-7-1
Pages: 764