Fig. 25.

(a) (i) SEM image of closely-packed CVD grown N-SWCNTs on silicon substrate, (ii) Vertically aligned CNTs by contact printing method, (iii) SEM image showing chemiresistor sensor device containing N-MWCNT on Kapton® substrate; the inset image shows interfacing of horizontal N-MWCNTs on interdigitated electrode, (iv) SEM image of sc-SWCNTs interfaced on patterned interdigitated electrode on quartz substrate, (v) Optical imaging of CNTs based fabricated sensor arrays with 400 sensors on quartz, glass and polyimide (left to right), (b) (i) Functionalization of CNT based chemiresistive biosensor (ii) Probe station during electrical characterization of CNT interfaced biosensor [199].