X-Ray Computed Tomography
Three-dimensional imaging of materials with sub-micron resolution based on X-ray transmission through the sample
Xradia MicroXCT-200 X-Ray Computed Tomography
Location: MSB 108
The Xradia MicroXCT-200 reconstructs a sample’s 3D internal structure by measuring the X-ray transmission from multiple perspectives. 2D projections of the sample are acquired at discrete angles as the specimen is rotated 180°. These 2D radiographs are reconstructed into a 3D volume using a Filtered Back Projection (FBP) algorithm. The 3D volumes can be quantitatively analyzed using available Avizo software or other programs to provide detailed microstructural measurements and 3D renderings.
XCT Technique Summary:
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Non-destructive measurement of the internal 3-D microstructure of solids
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3-D spatial resolution from 0.7-1.0 µm
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Typical acquisition times of 1-10 hours
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Works best for samples that are cylindrical in shape
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Compatible with biological, polymer, ceramic, metal and composite samples
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Contrast in proportional to material density
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Compatible with in situ mechanical testing, electrochemical and heating/cooling stages
XCT Features:
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Air-cooled X-ray source with a range of 20-90 kV voltage and 1-8 W power
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Detector has a 2048 x 2048 pixel array
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Maximum sample size 100 mm wide by 150 mm tall
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Maximum sample weight 1 kg
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Resolution of up to 0.7 microns, depending on sample size, composition and imaging parameters
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Sample stage travels 90 mm along X-axis, 50 mm along Y-axis, and 10 mm along Z-axis (parallel to X-ray beam), with 360° rotation
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X-ray detector travels 120 mm
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X-ray source travels 85 mm
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Easily interchangeable filters to optimize contrast
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Two different magnification settings
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Clamp-, clip- and vise-style sample holders to accomodate a variety of sample sizes and shapes
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Ergonomic station for comfort during experimental set-up
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Access to Avizio software for image reconstruction on a separate data-processing computer
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Various user manuals in hard-copy and electronic formats