IR spectroscopy vs. Raman scattering by measurement of glucose concentration
2010
By developing a non-invasive device for glucose concentration measurement, two promising methods were compared for
that aim. The Raman scattering using Laser at the wavelength 785 nm and the light scattering in R- and IR-range are
demonstrated. An easy accessible and low-cost method for glucose concentration monitoring and management to avoid
its complications will be a great help for diabetic patients. Raman Scattering is a promising method for noninvasively
measuring of glucose and for the diagnostic of pathological tissue variations. Despite the power and the time of
measurement can be reduced using enhanced Raman scattering, it will be difficult to develop a compatible device with
low power Laser and low price for a non-invasive method for home monitoring. As using IR-spectroscopy at
wavelengths slightly below 10000 nm, the absorption of glucose can be well discriminated from that of water, LED`s or
LD´s at these wavelengths are very expensive for this purpose. At wavelengths about 6250 and 7700 glucose has a less
light absorption than water. Also slightly above 3000 nm glucose has a high absorption. There are also possibilities for
the measurement in the NIR at wavelengths between 1400 nm and 1670 nm. Scattering measurements at wavelengths
below 900 nm and our measurements with the wavelength about 640 nm give reproducible glucose dependence on the
reflected light from a glucose solution at a constant temperature. A multi-sensor with different wavelengths and
temperature sensor will be a good choice for in-vivo glucose monitoring.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
0
References
0
Citations
NaN
KQI