ampbio (IMAGE) Kazan Federal University Caption (a) 2D and (b) 3D topographic mages of the surface of an electrode modified by carbon nanotubes in chitosan; size 2 × 2 μm. Credit Kazan Federal University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.