Fig. 1From: Dual functional nisin-multi-walled carbon nanotubes coated filters for bacterial capture and inactivationSEM images of MWCNTs coated filters, (a) and (b) the top view of MWCNTs on filters coated with MWCNTs1 and MWCNTs2, and (c) and (d) the cross section of filters coated with 1.2Â mg MWCNTs 1 and MWCNTs 2Back to article page