Blade As 'Microcomb' (image) North Carolina State University Share Print E-Mail Caption Surgical blades appear straight to the naked eye, but they actually have micrometer-scale fissures on their cutting edge. These fissures create a kind of "microcomb" that can be used to align carbon nanotubes. Credit Yuntian Zhu, North Carolina State University Usage Restrictions Image credit must be given. Share Print E-Mail 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.