fig2

Figure 2. Preparation process and characterization of the flexible pressure sensor array. (A) Preparation process of the flexible sensor array. SEM images of (B) mPDMS and (C) MWCNTs/PDMS; (D) 3D topography scanning image of the MWCNT/mPDMS surface; (E-G) Elemental distribution of MWCNT/mPDMS. SEM: Scanning electron microscopy; mPDMS: microstructured polydimethylsiloxane; MWCNTs: multiwalled carbon nanotubes; SLS: selective laser sintering; PI: polyimide.