Fig. 2: Schematics of fabrication process and characterizations of the sensor array.
From: High-density, highly sensitive sensor array of spiky carbon nanospheres for strain field mapping

a Fabrication process of sensor array (PVA: polyvinyl alcohol; PDMS: polydimethylsiloxane). b SEM and TEM images of the SCNs. SEM images of the SCNs layer with (c) side and (d) top view.