A5009955149- Gold and Silver Nanoparticles Synthesis and Applications
- Nonlinear Optical Materials Research
- Metal complexes synthesis and properties
- Protein Interaction Studies and Fluorescence Analysis
- Advanced Chemical Physics Studies
- Atomic and Molecular Physics
- Free Radicals and Antioxidants
- Spectroscopy Techniques in Biomedical and Chemical Research
- Muon and positron interactions and applications
- Magnetism in coordination complexes
- Spectroscopy and Chemometric Analyses
- Surface and Thin Film Phenomena
- Photochemistry and Electron Transfer Studies
- Crystallization and Solubility Studies
- Molecular Sensors and Ion Detection
- Electron Spin Resonance Studies
- Crystallography and molecular interactions
- Electrochemical Analysis and Applications
- Advanced biosensing and bioanalysis techniques
- Inorganic and Organometallic Chemistry
- Spectroscopy and Quantum Chemical Studies
- Synthesis and Characterization of Heterocyclic Compounds
- X-ray Diffraction in Crystallography
- Quantum and electron transport phenomena
- Radiopharmaceutical Chemistry and Applications
Babeș-Bolyai University
2015-2024
Applied Natural Sciences
2022
Romanian Institute of Science and Technology
2019
Spitalul Clinic Județean de Urgență Cluj-Napoca
2018
Donostia International Physics Center
2011-2014
Technical University of Cluj-Napoca
1994-2014
Technische Universität Ilmenau
2012
University of Central Florida
2011
Chalmers University of Technology
2004-2011
University of Gothenburg
2007-2010
Purpose: Surface-enhanced Raman scattering (SERS) spectroscopy on serum and other biofluids for cancer diagnosis represents an emerging field, which has shown promising preliminary results in several types of malignancies. The purpose this study was to demonstrate that SERS can be employed the differential between five leading malignancies, ie, breast, colorectal, lung, ovarian oral cancer. Patients methods: Serum samples were acquired from healthy volunteers (n=39) patients diagnosed with...
Density-functional perturbation theory and Raman spectroscopy are used in the study of vibrations bulk V${}_{2}$VI${}_{3}$ binary ternary topological insulators as well ultrathin films composed one two quintuple layers. Full dispersion curves along Brillouin zone symmetry directions calculated analyzed zone-center active modes compared to experimental results. The calculations layer reveal that correspond displacements entire blocks. These have low frequencies active. phonon...
Nonculture-based tests are gaining popularity and upsurge in the diagnosis of invasive fungal infections (IFI) fostered by their main asset, reduced analysis time, which enables a more rapid diagnosis. In this project, three different clinical isolates relevant filamentous species were discriminated using (less than 5 min) sensitive surface-enhanced Raman scattering (SERS)-based detection method, assisted chemometrics. The holistic evaluation SERS spectra was performed employing appropriate...
Plasmonic nanoparticles can drive chemical reactions powered by sunlight. These processes involve the excitation of surface plasmon resonances (SPR) and subsequent charge transfer to adsorbed molecular orbitals. Nonetheless, controlling flow energy from SPR molecules is still difficult predict or tune. Here, we show crucial role halide ions in modifying landscape a plasmon-driven reaction carefully engineering nanoparticle-molecule interface. By doing so, selectivity be controlled, either...
Recent studies of the surface dynamics Al(001) and Cu(111) based on density functional perturbation theory have substantiated existence subsurface optical phonon resonances all three polarizations, thus confirming early predictions embedded-atom method. The hybridization shear-vertical resonance with longitudinal acoustic branch accounts for ubiquitous anomalous as an intrinsic feature metal surfaces. DFPT calculation phonon-induced charge oscillations shows that helium atom scattering...
Abstract A rapid increase in the use of proton therapy for cancer treatment has been seen last decade due to its clinical advantages. Therefore, more and patients with implants other metallic devices will be among those who treated. This study experimentally examines effect changes delivered fields, using water-equivalent phantoms without titanium (Ti) dental positioned along primary beam path. We measured detail composition spectral-tracking characterization particles generated plateau...
Lattice dynamics of two bismuth tellurohalides, BiTeI and BiTeCl, the influence spin-orbit coupling on their vibrational properties are investigated using first-principles calculations in density functional perturbation formalism. We also report Raman study these tellurohalides as well BiTeBr. It is shown that inclusion interaction results a sizable softening phonon spectra BiTeCl. For both compounds strong anisotropy dielectric tensor Born effective charges found. Predicted active mode...
The nanoparticles mediated enantioselective recognition of propranolol enantiomers through native cyclodextrin complexation has been investigated by using surface-enhanced Raman spectroscopy (SERS). highly efficient chiral mechanism is based on a synergistic interaction between spherical noble metal nanoparticles, and cyclodextrins (CDs). Amongst the cyclodextrins, β-CD highest ability for enantiomers, due to its specific shape cavity size, thus producing largest difference recorded SERS...
Polarized Raman microspectroscopy and atomic force microscopy were used to obtain quantitative information regarding the molecular structure of individual diphenylalanine (FF) nano- microtubes. The frequencies spectral bands corresponding amide I (1690 cm(-1)) III (1249 indicated that FF-molecules interact by hydrogen bonding at N-H not C═O sites. calculated mean orientation angles principal axes tensors (PARTs) obtained from polarized measurements 41 ± 4° for 59 5° III. On basis PART mode,...
The lack of an accurate point-of-care detection system for microalbuminuria represents important unmet medical need that contributes to the morbidity and mortality patients with kidney diseases. In this proof-of-concept study, we used SERS spectroscopy detect urinary albumin concentrations in normal-to-mildly increased albuminuria range, a strategy could be useful early diagnosis renal impairment due uncontrolled hypertension, cardiovascular disease or diabetes. We analyzed 27 urine samples...
Abstract 3D-engineered nano-architectures with various functionalities are still difficult to obtain and translate for real-world applications. However, such nanomaterials naturally abundant yet wasted, but could trigger huge interest blue bioeconomy, provided that our understanding of their ultrastructure-function is achieved. To date, the Bouligand pattern in crustaceans shell structure believed be unique. Here we demonstrated crab Callinectes sapidus , 3D-nanoarchitecture color-specific,...