Publications by authors named "Klytaimnistra Katsara"
The present work reports on the fabrication of high-density polyethylene sponges, decorated with Mn-doped ZnO nanostructures. The sponges were developed utilizing three-dimensional printing technology, while Mn-doped ZnO nanostructures, with varying doping levels, were grown at mild temperatures. The nanostructures were fully characterized by means of scanning electron microscopy, X-ray diffraction, and Raman spectroscopy, revealing the existence of Mn doping.
View Article and Find Full Text PDFRectangular, millimeter-scale complementary split ring resonators were fabricated, employing the so-called Computer Numerical Control method, combined with a home-built mechanical engraver. Their electromagnetic performance was thoroughly investigated with respect to their dimensions in the frequency regime between 2 and 9 GHz via combining experiments and corresponding theoretical simulations, wherein a considerably effective consistency was obtained. Moreover, their sensing response was extensively investigated against various aqueous solutions enriched with typical fertilizers used in agriculture, as well as detergents commonly used in every-day life.
View Article and Find Full Text PDFArticle Synopsis
- Circulating cell-free DNA (ccfDNA) shows promise as a biomarker for precision medicine diagnostics, leading researchers to explore its structure and biology.
- Raman spectroscopy was used to analyze ccfDNA from various sources, revealing distinct chemical profiles related to health conditions like cancer and diabetes.
- The study suggests that Raman spectroscopy could enhance liquid biopsy diagnostics, offering valuable insights into the biomolecular structure of ccfDNA in both healthy individuals and patients.
Article Synopsis
- * Millimeter-scale metasurfaces can be used to harvest energy from microwave sources and serve as sensors for better power management solutions.
- * A study proposes a simple spray printing method to integrate these metasurfaces into common construction materials like plasterboard and wood, allowing for effective electromagnetic applications in building interiors.
Raman spectroscopy is a well-defined spectroscopic technique sensitive to the molecular vibrations of materials, since it provides fingerprint-like information regarding the molecular structure of the analyzed samples. It has been extensively used for non-destructive and label-free cell characterization, particularly in the qualitative and quantitative estimation of amino acids, lipids, nucleic acids, and carbohydrates. Lymphoma cell classification is a crucial task for accurate and prompt lymphoma diagnosis, prognosis, and treatment.
View Article and Find Full Text PDFArticle Synopsis
- - The study examined the migration of low-density polyethylene from plastic packaging into three types of cheese (Edam, Kefalotyri, and Parmesan) using two methods, ATR-FTIR and Raman spectroscopy, over a 28-day period to assess contamination risks.
- - Results showed that polyethylene migration was detectable after a few days, with distinct peaks appearing in the spectroscopy results for all cheese types, indicating the plastic was leaching into the food.
- - The research highlights the importance of consuming cheese quickly when stored at 4 °C, as microbial growth and contamination risks increased after a week, further complicating food safety concerns related to packaging materials.
The outburst of plastic pollution in terrestrial ecosystems poses a potential threat to agriculture and food safety. Studies have already provided evidence for the uptake of plastic microparticles by several plant species, accompanied by numerous developmental effects, using fluorescence labelling techniques. Here, we introduce the implementation of confocal Raman spectroscopy, a label-free method, for the effective detection of microplastics (MPs) accumulation in the roots of a common edible root vegetable plant, , after treatment with acrylonitrile butadiene styrene (ABS) powder.
View Article and Find Full Text PDF