Figure 3
From: A carbon nanotube integrated microfluidic device for blood plasma extraction

Optical and scanning electron microscopy (SEM) images of grown CNxCNT before assembling the microfluidic device with PDMS. (a) Top-view optical image of the CNxCNT grown on channel wall following a double spiral pattern. (b) SEM image of the CNxCNT porous channel walls. (c) Zoom-in SEM image of an individual CNT porous channel wall. (d) Top surface of a CNxCNT channel wall. (f) Cross-sectional view of CNxCNT arrays, and (g) Zoom-in SEM image showing individual CNxCNTs.