1670 cm -1 |
Human hair |
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1580 cm -1 |
1800
1600
1400
1200
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Wavenumber [ cm -1 ] |
In-situ infrared vibrational chemical analysis of a medulla cross-section in a resinembedded human hair performed with nano-FTIR HSI . The infrared hyperspectral imaging data cube ( partially cut at different frequencies for improved visibility ) allows for a multivariate cluster analysis , resulting in a compositional map ( bottom ) that reveals natural nanoscale Melanin inclusions ( grey and black ) in the cortex region ( light yellow ). |
1.5 |
1.0 |
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x [µ m ]
0.5
Compositional map calculated from HSI data cube
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0 0 |
0.5
y [µ m ]
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nano-FTIR & hyperspectral imaging provide compositional maps of biostructures at 10-nm spatial resolution |
I . Amenabar et al ., Nature Comm . 2017 , 8 , 14402 . |
V . Stanic et al ., Nanoscale 2018 , 10 , 14245 |