Detection of moisture ratio and carotenoid compounds in mamey () fruit during dehydration process using spectroscopic techniques.

This work presents the study of the moisture ratio and carotenoid compounds in dried mamey () using non-invasive spectroscopic techniques. The drying behavior of mamey at 64 °C by a homemade solar dryer is analyzed by fitting the experimental data to four different mathematical drying models. In addition, this result is compared with other drying techniques, namely by heat chamber with natural convection at temperatures of 50 °C and 60 °C.

Customized depolarization spatial patterns with dynamic retardance functions.

In this work we demonstrate customized depolarization spatial patterns by imaging a dynamical time-dependent pixelated retarder. A proof-of-concept of the proposed method is presented, where a liquid-crystal spatial light modulator is used as a spatial retarder that emulates a controlled spatially variant depolarizing sample by addressing a time-dependent phase pattern. We apply an imaging Mueller polarimetric system based on a polarization camera to verify the effective depolarization effect.

Generation of unconventional polarization from light scattered by metallic cylinders under conical incidence.

A simple experimental method to generate unconventional polarized states from the conical scattering of light by thin metallic cylinders is presented. Results show that radial and azimuthal polarizations are easily obtained. This opens up the possibility for a broad range of applications, from surgery to industrial and even to remote sensing.