Small or Irregularly-shaped Samples?
The Z is the only handheld LIBS unit that offers both an XY user-controllable laser raster, Z-axis controlled focusing, and an integrated high-resolution camera. Users may setup and view the raster pattern, to analyze only specific locations within a sample.
For homogeneous (bulk) samples, the best LIBS results are obtained when the laser beam is moved to multiple locations on the sample, and averages the results over multiple locations. The Z was designed with a computer controlled XY stage to move the laser beam in two dimensions and automatically rasters and averages data.
What is cleaning? The Z may be configured to fire multiple laser shots at the same location, thus burning off surface contamination including dirt, oils, corrosion, etc., prior to data-taking shots. With our unique high-speed laser pulsing, the Z can often burn through coatings or platings, allowing for both the plating and the underlying substrate to be analyzed separately. The Z is totally user-settable for one or more cleaning shots, followed by repeat data shots, and XY rastering to a new location on the sample. For many samples, cleaning shots are critical to obtaining repeatable, precise analysis.