November Spectra of the Month: NIR Spectra In Vivo

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Biomedical Applications was November's theme at Avantes. Near-infrared is the preferred wavelength range for biomedical applications because of the therapeutic optical window in the near-infrared. Using the high-powered AvaSpec-NIR256-1.7-EVO, Avantes engineers collected NIR spectra of two sample locations: fingernails, and ear cartilage, from three volunteer subjects.

Parameters Measured

Wavelength Range	950nm to 1700nm
Method	NIR Reflectance

Equipment Used to Collect Spectra from Fingernails

Spectrometer	AvaSpec-NIR256-1.17-EVO
Integrating Sphere	Avasphere-50-LS-HAL-12V 50 mm reflectance integrating sphere with internal tungsten halogen source
Fiber Optics	FC-UVIR600-1-BX
Accessories	WS-2 White Reflectance tile

Images from Fingernail/Fingertip Spectra

NIR Reflection Spectra from Fingertips

Set-up for Fingertip NIR Reflection

Equipment Used to Collect Spectra from Ear Cartilage

Spectrometer	AvaSpec-NIR256-1.17-EVO
Light Source	Avalight-HAL-S-Mini – Tungsten Halogen Light Source
Fiber Optics	FCR-7UVIR200-2-45-ME – Probe with 45 degree window
Accessories	WS-2 White Reflectance tile