Published in Physica Scripta
In the present work, polypyrrole (PPy) and poly (3-hexylthiophene) (P3HT) are prepared via oxidation polymerization, and their optical and dielectric properties in comparison with their originating monomers are investigated. The chemical structure of both polymers is confirmed by FTIR spectroscopy. Investigation of the optical properties of the pre...
The aim of this clinical study was to compare the diagnostic performance of dual short wavelength infrared (SWIR) occlusal transillumination and reflectance multispectral imaging with conventional visual assessment and radiography for caries detection on premolars scheduled for extraction for orthodontics reasons. Polarized light microscopy (PLM) a...
To support in-line quality control of raw milk, we propose a fiber-optic spatially-resolved spectroscopy (SRS) setup. This setup allows to vary the interaction of long-wave near-infrared (LW-NIR) light with the milk by submerging a separate optical illumination and detection fiber into the sample and altering their relative distance to optimize mea...
Published in Frontiers in Plant Science
Compact and automated sensing systems are needed to monitor plant health for NASA’s controlled-environment space crop production. A new hyperspectral system was designed for early detection of plant stresses using both reflectance and fluorescence imaging in visible and near-infrared (VNIR) wavelength range (400–1000 nm). The prototype system mainl...
To adapt to climate change and water scarcity during dry, hot summers, more sustainable, or even deficit, irrigation is required in the ornamental sector, as it uses large amounts of water to sustain high-value crop production. Biostimulants, especially seaweed extracts, could offer a sustainable solution against drought stress as they are known to...
Published in Frontiers in Materials
This paper presents a multi-layered Kretschmann configuration-based Surface Plasmon Resonance (SPR) biosensor for the detection of urine glucose. The modelling, simulation, and analysis have been done by using Silver (Ag) and Gold (Au) layer on the low refractive index prism BK-7 separately, which created two structures: structure-I (BK7/Ag/Bio-sam...
La cantidad de energía solar absorbida por una hoja es en gran parte función de la concentración foliar de los pigmentos fotosintéticos. Por lo tanto, bajas concentraciones de clorofila pueden limitar el potencial fotosintético y por consiguiente la síntesis de compuestos primarios de una planta. En este trabajo se describe un método no destructivo...
Until recently, and when compared with diurnal birds that use contrasting plumage patches and complex feather structures to convey visual information, communication in nocturnal and crepuscular species was considered to follow acoustic and chemical channels. However, many birds that are active in low-light environments have evolved intensely white ...
Cílem této práce je zkoumat účinnost různých ochranných pomůcek proti UV záření, jako jsou sluneční brýle, krémy na opalování a oblečení. Teoretická část zahrnuje popis vlastností elektromagnetického záření a vlastností a zdrojů UV záření. Experimentální část zahrnuje použití laboratorního vybavení k určení optických vlastností ochranných pomůcek, ...
Published in Physica Scripta
In this work, two structures of wire grid reflecting polarizers have been proposed and optimized through simulation at the target wavelength of 121.6 nm (H Lyman-α), which aims to realize compact and efficient polarizers for measuring the magnetic field vector of the solar corona. Both structures are based on a high reflective patterned Al/MgF2 bi-...
