Optical sensors based on the NiPc–CoPc composite films deposited by drop casting and under the action of centrifugal force |
(color online) Atomic force microscope (AFM) images [two-dimensional (2D) and three-dimensional (3D)] and roughness values of the NiPc and CoPc composite films deposited by drop casting (a), (b), and (c) and centrifugal force (d), (e), and (f), respectively. |