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Au-Interaction of Slp1 Polymers and Monolayer from Lysinibacillus sphaericus JG-B53 - QCM-D, ICP-MS and AFM as Tools for Biomolecule-metal Studies
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Digging gold: keV He(+) ion interaction with Au.

Vasilisa Veligura1, Gregor Hlawacek, Robin P Berkelaar

  • 1Physics of Interfaces and Nanomaterials, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.

Beilstein Journal of Nanotechnology
|August 16, 2013
PubMed
Summary

Helium ion microscopy (HIM) reveals that focused helium ion beams cause periodic nanopatterns on gold surfaces. High ion fluences lead to helium implantation, forming porous structures or blisters.

Keywords:
formation and healing of defects in crystalshelium ion microscopyion beam/solid interactionsvacancies in crystals

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Area of Science:

  • Materials Science
  • Surface Science
  • Nanotechnology

Background:

  • Helium ion microscopy (HIM) offers high resolution and surface sensitivity.
  • High ion fluences can induce significant modifications in materials.
  • Understanding ion-beam-matter interactions is crucial for advanced material processing.

Purpose of the Study:

  • To investigate the effects of focused helium ion (He+) beams on Au{111} surfaces.
  • To characterize surface modifications as a function of ion fluence and energy.
  • To analyze the formation and growth of helium-induced nanostructures.

Main Methods:

  • Utilized Helium Ion Microscopy (HIM) to irradiate Au{111) surfaces.
  • Varied ion energies (tens of keV) and fluences.
  • Analyzed surface morphology and nanopattern development.

Main Results:

  • A periodic surface nanopattern formed on Au{111} under He+ beam irradiation.
  • Pattern periodicity exhibited a power-law dependence on ion fluence.
  • Helium implantation resulted in porous nanostructures or large blisters, depending on fluence and energy.

Conclusions:

  • Focused He+ ion beams can induce controlled nanopatterning on metal surfaces.
  • Helium implantation and bubble formation are key mechanisms for surface modification.
  • HIM parameters significantly influence the resulting nanostructure morphology.