A flexible sample introduction method for polymer microfluidic chips using a push/pull pressure pump
Abstract
A push/pull sample introduction method based on push/pull pressure flow for microfluidic systems (cross, double T and multichannel structures) is presented. This leads to well-defined and controllable sample plugs even when dealing with long channels. By tuning the relative push/pull pressure, it is shown that the size of the sample plug can effectively be controlled. Good signal reproducibility upon continued sample introduction and subsequent chip