Corrections to “Attomolar Sensitivity of FET Biosensor Based on Smooth and Reliable Graphene Nanogrids” [Apr 16 492-495]

Summary form only given. The authors would like to make corrections to the above paper [1, Fig. 2(b) and 4(b)] due to some post-processing carried out in these figures. After capturing the SEM image-cross-section [1, Fig. 2(b)], we wanted to measure the pore lengths, pore diameters at different positions along the lengths and also the spacing between the pores, to evaluate the uniformity of the electrochemical etching process. To do so, vertical and horizontal lines had to be constructed. For this purpose, we were trying to select different textured lines in the image processing software whose texture would match closely the original texture of the SEM image. But exact matching was not possible. Initially we tried to measure with a textured line, a part of which is actually the white region above the “nm” in 30 nm word in [1, Fig. 2(b)]. Later, we shifted to different textured lines which are visible above the “100 nm” word and also within the pores in [1, Fig. 2(b)]. Within the pores these lines look grayish. These lines are visible in most of the regions since they were a better match with the original SEM figure than the whitish line. However, all these lines were only for our own measurements and should have been deleted before submitting the final paper.