(309d) The Role of Irreversible Forces On Deterministic Lateral Displacement and Other Microfluidic Separation Methods
AIChE Annual Meeting
2011
2011 Annual Meeting
Engineering Sciences and Fundamentals
Microfluidic and Microscale Flows II
Tuesday, October 18, 2011 - 1:15pm to 1:30pm
When a suspended sphere moves deterministically and at low Reynolds number around a circular obstacle it typically reaches extremely small separation gaps, leading to the occurrence of irreversible particle-obstacle interactions. We show that such interactions explain the behavior observed in two popular separation methods in microfluidics, pinched flow fractionation (PFF) and deterministic lateral displacement (DLD).