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Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
Published on: August 17, 2017
Simultaneous formation of two ripple modes on ion sputtered silicon
Adrian Keller1, Steven Roßbach, Stefan Facsko
1Institute of Ion Beam Physics and Materials Research, Forschungszentrum Dresden-Rossendorf, PO Box 510119, D-01314 Dresden, Germany.
Nanotechnology
|July 29, 2009
Summary
Silicon (100) surfaces develop perpendicular ripple patterns after ion sputtering. These patterns coarsen over time and persist even at high fluences, indicating a stable surface morphology.
Area of Science:
- Materials Science
- Surface Science
- Ion Beam Modification
Background:
- Ion sputtering of silicon surfaces can induce nanoscale pattern formation.
- Understanding surface evolution under ion bombardment is crucial for thin-film deposition and etching processes.
Purpose of the Study:
- To investigate the development and evolution of ripple patterns on amorphized Si(100) surfaces.
- To characterize the coarsening dynamics and steady-state behavior of these patterns.
Main Methods:
- Amorphization of Si(100) surfaces using low-energy ion sputtering at moderate temperatures.
- In-situ or ex-situ characterization of surface morphology over a range of ion fluences.
Main Results:
- Observation of two perpendicular ripple patterns overlaying each other on the amorphized Si(100) surface.
- Coarsening of both ripple modes with a similar time dependence and a coarsening exponent (n) of approximately 0.08.
- The surface reaches a steady state in the high fluence regime, maintaining both ripple modes.
Conclusions:
- Ion sputtering of Si(100) leads to a complex, yet stable, surface morphology characterized by perpendicular ripples.
- The observed coarsening behavior suggests underlying scaling laws governing pattern evolution.
- The persistence of both ripple modes indicates a robust steady-state surface structure under prolonged ion exposure.
