@article{7905, author = {I. Tanyeli and L. Marot and M. C. M. van de Sanden and G. De Temmerman}, title = {Nanostructuring of Iron Surfaces by Low-Energy Helium Ions}, abstract = {The behavior of iron surfaces under helium plasma exposure is investigated as a function of surface temperature, plasma exposure time, and He ion flux. Different surface morphologies are observed for a large process parameter range and discussed in terms of temperature-related surface mechanisms. Surface modification is observed under low-He ion flux (in the range of 1020 m-2 s-1) irradiation, whereas fiberlike iron nanostructures are formed by exposing the surface to a high flux (in the range of 1023 m 2 s 1) of low-energy He ions at surface temperatures of 450-700 °C. The effects of surface temperature and plasma exposure time on nanostructures are studied. The results show that surface processing by high-flux low-energy He ion bombardment provides a size-controlled nanostructuring on iron surfaces. }, year = {2014}, journal = {ACS Applied Materials & Interfaces}, volume = {6}, pages = {3462-3468}, url = {http://pubs.acs.org/doi/abs/10.1021/am405624v}, doi = {10.1021/am405624v}, language = {eng}, }