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| Diamond Film Raman Intensity With & Without AFM Feedback |
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With AFM feedback
Rigorous Z feedback is essential for comparing |
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Raman intensities of less than flat surfaces.
Without AFM feedback |
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Intensity of a Raman band in this case the vibrational mode of diamond at 1334 cm-1 in a diamond film is entirely different with and without AFM feedback.
Collage of Raman Intensity at 1333-1 cm with AFM Topography
| The colors represent the intensity of the Raman band while the topography is the background. |
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On-Line AFM Pixel by Pixel Z Adjustment Leads to the First True Raman Intensity Imaging. |
AFM allows for Auto-focus allowing accurate intensity comparisons.
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Collage of Raman Intensity and AFM Topography of 1333 cm-1 and 1525 cm-1 | |
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AFM topography & Raman 1525 cm-1 intensity
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AFM topography & Raman 1334 cm-1 intensity
Green arrows indicate two of many differences of Raman intensity in the graphite 1525 cm-1 band and the diamond 1334 cm-1 bands and with AFM topography.
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Such Raman intensity differences in a Raman image could not be compared without on-line AFM z adjustment. The integrated system allows to access the whole spectrum at every pixel and to produce AFM Raman maps of any vibrational modes.
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