| AVS 61st International Symposium & Exhibition | |
| Plasma Science and Technology | Thursday Sessions |
| Session PS-ThA |
| Session: | Plasma Processing of Nanoparticles and Nanomaterials |
| Presenter: | Irem Tanyeli, FOM Institute DIFFER, Netherlands |
| Authors: | I. Tanyeli, FOM Institute DIFFER, Netherlands L. Marot, University of Basel, Switzerland M.C.M. van de Sanden, FOM institute DIFFER, Netherlands G. de Temmerman, ITER Organization, Netherlands |
| Correspondent: | Click to Email |
The effect of low energy (<50 eV) helium ion irradiation on surface modifications of metals has been studied [1,2]. The most pronounced works have been done on tungsten and molybdenum surfaces [2]. Nanostructure formation on these surfaces by high fluxes of low energy helium ions is identified as a self-growth process of He bubbles. In this study, we provide a size-controlled nanostructure formation by surface temperature and plasma exposure time on iron surfaces consistently with the experiments on tungsten and molybdenum. Besides, various metal surfaces such as titanium, aluminum and copper are irradiated by low energy He ions. We investigated the behavior of these surfaces under the He ion irradiation as a function of surface temperature, plasma exposure time and He ion flux. Different surface morphologies are observed for these metals. Nanostructure growth kinetics shows dependency on surface temperature and plasma exposure time. It has been shown that the nanostructured surfaces present high surface area and hence high light absorption [3]. The photo-catalytic activity of our metal surfaces will be presented.
[1] K. Tokunaga, et al., J. Nucl. Mater. 337–339, 887 (2005).
[2] G. De Temmerman, et al., JVSTA, 30 (2012).
[3] S. Kajita, et al., Appl. Phys. Express., 3 (2011).