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MicroMill is a microsampling device designed for high resolution milling to recover sample powder for chemical and isotopic analysis. The combination of submicron stage resolution and positional accuracy, real-time video observation and a custom designed software system allows for sampling of complex accretionary structures in skeletal and crystalline materials.
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Sub-micron sample motion control
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High-precision milling
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Sample height detection and tilt correction by a drill-tip sensor, contour-following function
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Sample map navigation increases sample-area field-of-view
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50mm of computer-driven sample movement on X, Y and Z axes
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Data/image file re-coordination, including save,recall, and export
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Applications for MicroMill Laser Ablation
Because of its high-resolution milling capability, MicroMill is extremely useful in a range of applications.
Two examples of these are the following:
Hardware Specifications
- High-resolution stereo microscope with 6.7X to 40X optical zoom and petrographic features S-video color CCD video camera with 24.5mm to 3.3mm field of-view for imaging and digitizing of sample
- Independent (second) color CCD camera with 3X digital magnification for in-process viewing of mill bit
- Automated 50mm travel in X, Y and Z stages with sub-micron step resolution
- Open-stage architecture accommodates large samples
- Software-selectable flood and transmitted lighting
- Continuously adjustable (360Þ) cross polarizers
- Low-eccentricity, high-torque DC milling chuck with variable speed (1,200 – 35,000rpm)
- Precision tungsten-carbide milling tools for high spatial resolution
- Joystick stage control for manual sample positioning.
Software Specifications
- MicroMill software (Windows®-based) with point-and-click functions
- Live video image displayed on computer monitor
- On-screen display of digitized and interpolated sub-sampling paths
- Precise depth control over entire area of sampling
- Z-tilt correction and contour-following functions
- Off-line digitized files can be read directly with software transformation of image coordinates
- Data record file with sample-path information and estimated sample volumes
- Save, recall and export images (BMP, TIF, JPG and TGA files)
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