Agnė Zdaniauskienė

Center for Physical Sciences and Technology | CPST · Organic Chemistry

Magneto-plasmonic nanoparticles were fabricated using a 1064 nm picosecond-pulsed laser for ablation of Fe/Au and Fe/Au/Fe composite thin films in acetone. Nanoparticles were characterized by electron microscopy, ultraviolet-visible (UV-VIS) absorption, and Raman spectroscopy. Hybrid nanoparticles were arranged on an aluminum substrate by a magneti...

The imidazole ring (Im) of histidine side chains plays a unique role in the function of proteins through covalent bonding with metal ions and hydrogen bonding interactions with adjusted biomolecules and water. At biological interfaces, these interactions are modified because of the presence of an electric field. Self-assembled monolayers (SAMs) wit...

Graphene research and technology development requires to reveal adsorption processes and understand how the defects change the physicochemical properties of the graphene-based systems. In this study, shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS) and graphene-enhanced Raman spectroscopy (GERS) coupled with density functional theo...

The silver nanospheres (70 ± 5 nm) were synthesised and decorated with silica under microwave irradiation. The obtained silver core-silica decorated nanoparticles (80 ± 5 nm) were applied for 4-mercaptobenzoic acid monolayer analysis by shell-isolated nanoparticle-enhanced Raman spectroscopy. A detailed protocol of synthesis, characterisation by UV...

The goal of this study is development of ultra-sensitive and reproducible SERS platform based on novel magnetoplasmonic nanoparticles produced by laser ablation. The magnetic part of hybrid nanoparticles ensures manipulation of the nanoparticles by magnetic field by arranging them at biological surfaces in a special geometry resulting in high and r...

A microwave-assisted synthesis of 90 nm ± 10 nm Ag@SiO 2 nanospheres for Raman spectroscopy.

The synthesized gold nanoparticles (50–60 nm) were coated with thin (1.5–8 nm) layers of silicon, manganese and titanium dioxides. The obtained three species of nanospheres were applied for the analysis of self-assembled monolayer of thiophenol by shell-isolated nanoparticleenhanced Raman spectroscopy method. Detailed synthesis and comparison of th...

Shell-isolated nanoparticles spread over the surface of sample material are widely used in various fields of analysis. Their stability has not yet been well established. In this report, the silica shell-isolated gold nanospheres were synthesized in aqueous medium. Their stability in water and 17 organic solvents was observed visually and employing...

Studying the biochemistry of yeast cells has enabled scientists to understand many essential cellular processes in human cells. Further development of biotechnological and medical progress requires revealing surface chemistry in living cells by using a non-destructive and molecular structure sensitive technique. In this study shell-isolated nanopar...

Electrode potential effect on the molecular structure of adsorbed species at interface is one of the most important issue in physical electrochemistry. In this study, shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS) was used to probe the electrochemical potential effect on bonding with surface, ion-pairing, and molecular structure...