Use of Optical Reflectometry to Observe Various Concentrations of Glucose
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Copyright: © 2020 Hariyadi Soetedjo. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Problem statement: Monitoring technique on glucose is a hot topic as this compound has been considered to be important in human healthties. Optical reflectometry has been used to study various concentrations of glucose dissolved in the water. Approach: The self-construction of reflectometer used was of hemi-cylinder aluminum to allow light beam strikes the sample at 70° for sor p-polarization state. The cell for sample was of a hemisphere cavity introduced in the hemi-cylinder face down the surface of stage. The visible light was used as a light source, meanwhile dark Nilon material for a stage has been used to allow the specular reflection by the interface introduced between the liquid sample and the stage. Results: From the investigation, the change of concentrations could be observed from the sensitive change of reflected intensities as indicated by a shift of peak wavelength. Conclusion: The measurement results obtained from a simple set up was encouraging for glucose concentration monitoring for wide applications.
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- Optical reflectometry
- glucose concentration
- reflected intensities
- various concentrations
- Surface Plasmon Resonance (SPR)
- Reflectometric Interference Spectroscopy (RIfS)
- DNA molecules
- optical heterodyne