Fig. 2From: Multi-height micropyramids based pressure sensor with tunable sensing properties for robotics and step tracking applicationsSEM micrographs of the (a) bare PDMS micropyramid, CNT-coated PDMS micropyramids with (b) 2 different heights and (c) 3 different heights, micropyramids with a (d) stamp-coated CNT layer and (e) spray-coated CNT layer. f Raman spectrum of PDMS, pristine CNT, and CNT-coated PDMSBack to article page