Geometric Flow Control Lateral Flow Immunoassay Devices (GFC-LFIDs): A New Dimension to Enhance Analytical Performance
Design and fabrication of GFC-LFIDs with various flow parameters. (a) Scheme illustration of a classical LFID and GFC-LFID, and the corresponding devices. (b) 2D layout indicating the regular membrane geometry, with the flow axis x, and the geometric variables include the width () and the length (l) of a constriction, as well as its input angle () and output angle () in this study, along with an image of the actual GFC-LFID NC membrane. (c) Magnification of the laser ablated NC membrane of a GFC-LFID and the SEM image of corresponding boundary illustrating the NC morphology is affected by the laser processing.