Publications by authors named "Beata Wrzosek"
A method for the synthesis of a new SERS substrate-anisotropic silver nanoparticles using mellitic acid as a new capping agent is presented. The synthesis is free of toxic substances and does not require special temperature or lighting conditions. Moreover, it is fast, easy, and inexpensive.
View Article and Find Full Text PDFWell-preserved mycelia of fungal- or saprolegnia-like biota mineralised by ferromanganese oxides were found for the first time in long bones of Late Cretaceous dinosaurs from the Gobi Desert (Nemegt Valley, Mongolia). The mycelia formed a biofilm on the wall of the bone marrow cavity and penetrated the osteon channels of the nearby bone tissue. Optical microscopy, Raman, SEM/EDS, SEM/BSE, electron microprobe and cathodoluminescence analyses revealed that the mineralisation of the mycelia proceeded in two stages.
View Article and Find Full Text PDFArticle Synopsis
- The study introduces 3-amino-5-mercapto-1,2,4-triazole (AMT) as a new material for creating pH-sensitive nano- and microsensors using surface-enhanced Raman scattering (SERS) with silver nanoparticles.
- The researchers optimize the attachment of silver nanoparticles to silica beads, paving the way for these beads to act as effective SERS microprobes.
- The AMT's SERS spectrum shifts with pH changes, allowing the sensor's sensitivity to be adjusted based on AMT concentration, showing significant performance variation in extreme acidic conditions without the AMT component.