A5002726070- Analytical Chemistry and Sensors
- Bone Tissue Engineering Materials
- Surface Modification and Superhydrophobicity
- Laser-Ablation Synthesis of Nanoparticles
- Graphene and Nanomaterials Applications
- Diamond and Carbon-based Materials Research
- Gas Sensing Nanomaterials and Sensors
- Photonic Crystals and Applications
- Acoustic Wave Resonator Technologies
- Polymer Nanocomposite Synthesis and Irradiation
- Polymer Surface Interaction Studies
- Laser Material Processing Techniques
- Nonlinear Optical Materials Studies
- Electrospun Nanofibers in Biomedical Applications
- Microfluidic and Capillary Electrophoresis Applications
- Glass properties and applications
- Electrowetting and Microfluidic Technologies
- Laser-induced spectroscopy and plasma
- Nanoparticles: synthesis and applications
- Luminescence Properties of Advanced Materials
- Ion-surface interactions and analysis
- Metal and Thin Film Mechanics
- Electrochemical sensors and biosensors
- Surface Roughness and Optical Measurements
- Wound Healing and Treatments
National Institute for Laser Plasma and Radiation Physics
2015-2024
University of Craiova
2017-2019
University of Bucharest
2014
In this paper, we present for the first time obtaining and characterization of new antibacterial biocompatible nano-ZnO–bacterial cellulose (BC) material with controlled interfaces studying in vitro microorganisms (Escherichia Coli (ATCC 8737), B. subtilis Spizizenii Nakamura 6633), Candida albicans (ATCC10231)) mammalian cells (human dermal fibroblast cells) response. The use BC based characteristics terms quantity distribution ZnO onto membrane (with 2D 3D fibers arrangement) is directly...
We report a Love wave surface acoustic (LW-SAW) immunosensor designed for the detection of high molecular weight targets in liquid samples, amenable also low competition assays. implemented label-free interaction protocol similar to other plasmon resonance bioassays having advantage requiring reduced time analysis. The fabricated LW-SAW sensor supports target nanomolar range, and can be ultimately incorporated portable devices, suitable point-of-care testing (POCT) applications.
TiZrTaAg alloy is a remarkable material with exceptional properties, making it unique choice among various industrial applications. In the present study, two types of bioactive coatings using MAPLE were obtained on substrate. The base coating consisted in mixture chitosan and bioglass which zinc oxide graphene added. samples characterized in-depth through varied methods to provide more complete picture coating. analysis included Fourier transform infrared spectroscopy (FTIR), scanning...
Developing a controlled method for obtaining hybrid enzymatic-based interfaces sensing application require the use of multiuse, reusable sensor. By controlling interface characteristics in terms surface chemistry, thickness, and roughness, tailored response toward various toxic compounds can be obtained, regarding both materials used as active surfaces fabrication methods. Herein, we report preliminary study on using laser-based (i.e., matrix-assisted pulsed laser evaporation, or MAPLE)...
We investigated the effect of additional continuous functional coatings, which changed hydrophilic–hydrophobic properties surface without heavily influencing topography at nanoscale, on antiadhesive bioinspired laser-induced periodic nanostructures. These nanostructures mimic structures silk-combing area legs cribellate spiders, calamistrum. The thin films were deposited by matrix-assisted laser deposition and characterized infrared spectroscopy, X-ray photoelectron water contact angle...
The improvement in the research area of implant by surface functionalization when correlated with biological response is major interest biomedical field. Based on fact that inflammatory directly involved ultimate within body, it essential to study macrophage-material interactions. Within this context, we have investigated composite material-macrophage cell interactions and these composites amorphous hydroxyapatite (HA), Lactoferrin (Lf), polyethylene glycol-polycaprolactone (PEG-PCL)...
We report on the fabrication of shellac thin films silicon substrates by matrix-assisted pulsed laser evaporation (MAPLE) using methanol as matrix. Very adherent, dense, and smooth were obtained MAPLE with optimized deposition parameters, such wavelength fluence. Films a root mean square (RMS) roughness 11 nm measured 40 × µm2 for 2000-nm-thick film deposited 0.6 J/cm2 fluence at 266 nm. The tested in simulated gastric fluid order to assess their capabilities an enteric coating. chemical,...
The potential of mesenchymal stem cells (MSCs) for implantology and cell-based therapy represents one the major ongoing research subjects within last decades. In bone regeneration applications, various environmental factors including bioactive compounds such as growth factors, chemicals physical characteristics biointerfaces are key in controlling regulating osteogenic differentiation from MSCs. our study, we have investigated influence Lactoferrin (Lf) Hydroxyapatite (HA) embedded a...
Thin film deposition with atmospheric pressure plasmas is highly interesting for industrial demands and scientific interests in the field of biomaterials. However, engineering high-quality films by high-pressure precise control over morphology surface chemistry still poses a challenge. The two types atmospheric-pressure plasma depositions organosilicon direct indirect injection hexamethyldisiloxane (HMDSO) precursor into region were chosen compared terms chemical composition to address this....
In this study a "Gum Metal" titanium-based alloy, Ti-31.7Nb-6.21Zr-1.4Fe-0.16O, was synthesized by melting and characterized in order to evaluate its potential for biomedical applications. The results showed that the newly developed alloy presents very high strength, plasticity low Young's modulus relative titanium alloys currently used medicine. For further bone implant applications, surface modified with graphene nanoplatelets (GNP), sericin (SS) nanoplatelets/sericine (GNP-SS) composite...
In this work we report on the deposition of UV resistant shellac thin films by matrix assisted pulsed laser evaporation (MAPLE). The obtained starting from a solution 1-2 wt% in methanol were very smooth and their chemical structure was preserved after transfer. Upon short exposure time (u to 60 min), irradiation did not induce significant modifications composition surface appearance, while upon increasing (240 min) an esterification process can be observed.
This work is focused on the application of a laser-based technique, i.e., matrix-assisted pulsed laser evaporation (MAPLE) for development electrochemical sensors aimed at detection nitrites in water. Commercial carbon-based screen-printed electrodes were modified by MAPLE via newly developed composite coating with different concentrations carbon nanotubes (CNTs), chitosan, and iron (II) phthalocyanine (C32H16FeN8). The performance fabricated coatings was evaluated both investigating...
Silica and polystyrene spheres with a small size ratio (r = 0.005) form by sequential hanging drop self-assembly, binary colloidal crystal through which calcination transforms in silica-ordered concavity array. These arrays are capable of light Bragg diffraction shape dependent optical phenomena, they can be transformed into inverse-opal structures. Hierarchical 2D 3D super-structures ordered concavities as structural units were fabricated this study.