Development of knife-edge ridges on ion-bombarded surfaces

• Main Authors: Holmes-Cerfon, Miranda, Zhou, Wei, Bertozzi, Andrea L., Brenner, Michael P., Aziz, Michael J.
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Mechanical engineering
• Online Access: https://hdl.handle.net/10356/95357; http://hdl.handle.net/10220/9330
• Institution: Nanyang Technological University

We demonstrate in both laboratory and numerical experiments that ion bombardment of a modestly sloped surface can create knife-edge like ridges with extremely high slopes. Small pre-fabricated pits expand under ion bombardment, and the collision of two such pits creates knife-edge ridges. Both labor...