We present Raman spectra from a sample of 8 volunteers that have different type of blood. The experimental data were
carried out using a 785 nm excitation laser and an ocean optics spectrometer of 6 cm-1 resolution, with a used spectral
region from 1000 to 1800 cm-1. We find Raman features at 1000 and 1542 cm-1 regarded with hemoglobin and its
derivatives. Also we find Raman features at 1248 and 1342 cm-1 that are now regarded with pure fibrin. In this work, we
use Principal Component analysis (PCA) to determine all variations of our samples, which allows us to define a
classification of the influence of the blood type. Finally, we found vibrational lines of cholesterol, glucose and
triglycerides that are reported in literature.
Precision machining is as a very precise and effective method for micro-structure optical components fabrication. In this
paper, the mechanical structure of one XYZ and spindle axis of freedom machine with 250 nm of resolution in linear
axes is described, details of the homemade mechanical mounts are given; also components of the electronic system such
as hardware, firmware and software are included in the description.
In this work we carried out a comparison and localization of skin Raman spectra. Measurements were
made in regions where Raman scatter is caused by the excitation source; we used the spectra overlap in a
comparative way. Ten volunteers with different skin colors participated in the experiment; body parts
sampled were palm and dorsum of the hand. The excitation wavelength used for this work was 785nm. A spectrometer with 6cm-1 resolution and spectral region range 0 to 2000 cm-1 was utilized. We used Matlab® to overlap and compare the differences between Raman spectra form different samples. We found spectral variations that were caused by differences on the surface of the skin, such as scars and moles. This work helps to identify potential undesirable behavior on the epidermis.
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