TU Wien, Institute of Applied Physics, 1040, Vienna, Austria.
Marian Smoluchowski Institute of Physics Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Lojasiewicza 11, 30348, Kraków, Poland.
Small. 2023 Jun;19(26):e2207263. doi: 10.1002/smll.202207263. Epub 2023 Mar 22.
Experimental results on the charge-state-dependent sputtering of metallic gold nanoislands are presented. Irradiations with slow highly charged ions of metallic targets were previously considered to show no charge state dependent effects on ion-induced material modification, since these materials possess enough free electrons to dissipate the deposited potential energy before electron-phonon coupling can set in. By reducing the size of the target material down to the nanometer regime and thus enabling a geometric energy confinement, a possibility is demonstrated to erode metallic surfaces by charge state related effects in contrast to regular kinetic sputtering.
实验结果表明，金纳米岛的荷电状态依赖性溅射。以前认为，用慢的高电荷态金属离子照射金属靶不会对离子诱导的材料改性产生荷电状态依赖性影响，因为这些材料具有足够的自由电子，在电子-声子耦合发生之前，就能耗散沉积的势能。通过将靶材料的尺寸减小到纳米级，从而实现几何能限制，证明了通过与常规的动力学溅射相比，通过电荷状态相关的效应可以侵蚀金属表面。
