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Related Experiment Video

Updated: Dec 1, 2025

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

Published on: February 27, 2013

Influence of sample surface topography on laser ablation process.

Zita Salajková¹, Markéta Holá², David Prochazka³

¹Materials Characterization and Advanced Coatings, Central European Institute of Technology, Purkyňova 656/123, Brno, Czech Republic; Department of Chemistry, University of Bari, Via Orabona 4, 70126, Bari, Italy.

|November 10, 2020

Summary

Sample surface topography significantly impacts laser ablation (LA) and LA Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) analysis. Roughening surfaces enhances signal intensity, but can also alter elemental fractionation, requiring careful sample preparation for accurate results.

Keywords:

Fractionation LA-ICP-MS Laser ablation Surface analysis Surface topography

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Last Updated: Dec 1, 2025

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Laser Micromachining for Polymer Surface Topography Design

Laser Micromachining for Polymer Surface Topography Design

Published on: September 19, 2025

Area of Science:

Analytical Chemistry
Materials Science
Geochemistry

Background:

Sample surface topography is a critical, yet often overlooked, factor in laser ablation (LA) processes.
The analytical accuracy of LA coupled with Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) can be profoundly affected by surface characteristics.

Purpose of the Study:

To investigate the influence of varying sample surface topographies on the LA-ICP-MS analytical response.
To quantify the impact of surface roughness on signal intensity and elemental fractionation.

Main Methods:

Prepared six distinct surface topographies on certified aluminum alloy (BAM 311) and NIST 610 reference materials.
Performed repetitive LA-ICP-MS measurements across a laser fluence range of 1-13 J/cm².
Analyzed spot-by-spot data to assess signal amplification and elemental fractionation.

Main Results:

Increased surface roughness led to significant amplification of the ICP-MS signal for most measured isotopes.
An enhancement of over sixty times was observed on the aluminum alloy sample compared to its polished surface.
Surface topography was found to influence elemental fractionation, altering the relative signals of different elements.

Conclusions:

Sample surface topography significantly impacts LA-ICP-MS results, affecting both signal intensity and elemental fractionation.
Variations in surface preparation can lead to misleading data interpretation, even with ablation preshots.
Careful surface preparation is essential for accurate single-shot analysis and chemical mapping; surface roughening can enhance sensitivity and suppress matrix effects.