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Disc-Scanning Confocal Microscope
The Nanofocus™ µsurf disc-scanning confocal microscope is a 3D surface topography measurement instrument. Its primary purpose is to collect firearm toolmark measurements for the R&D efforts in the Forensic Toolmark Analysis Project (FTAP). Measurements originating from this instrument were also utilized in NIST SRM2461 Standard Cartridge Case certification.
Surface texture calibrations where non-contact measurements of smooth surfaces are required have been conducted using this microscope. The Surface and Interface Metrology Group also has specialized software (Mountains Map V7) to conduct calculations of surface texture parameters (B46.1) and surface contour parameters.
Related Program Area
Specifications/Capabilities
High speed 16-bit digital camera module HDR
1200 px x 1200 px at 100 fps
Stage Travel (X x Y): 100 mm x 100 mm
Objective | NA | Field of View | Lateral Pixel Spacing | Sq (Noise Floor) |
|---|---|---|---|---|
10 X | 0.2 | 1600 µm x 1600 µm | 1.33 µm / px | < 10 nm |
20 X | 0.4 | 800 µm x 800 µm | 0.67 µm / px | < 5 nm |
20 XS | 0.6 | 800 µm x 800 µm | 0.67 µm / px | < 5 nm |
50 X | 0.85 | 320 µm x 320 µm | 0.27 µm / px | < 1 nm |