Figure 5
From: A magnet-actuated biomimetic device for isolating biological entities in microwells

(A) Fluorescent intensity on both untreated and oxygen plasma treated PDMS microwell-surfaces. The corresponding fluorescent images for (B) untreated (hydrophobic, θCA = 129°) microwell-surface showing the aggregation of the FITC-BSA on the periphery of microwells and (C) oxygen plasma treated (hydrophilic, θCA = 60°) microwell-surface, showing the aggregation of the FITC-BSA in microwells (scale bar – 20 µm). (D) Micrographs obtained through confocal microscopy at different planes along the height of single microwell.