A5038727477- Bone Tissue Engineering Materials
- Dental materials and restorations
- Dental Implant Techniques and Outcomes
- Metal and Thin Film Mechanics
- Carbon Nanotubes in Composites
- Acoustic Wave Resonator Technologies
- Laser-Ablation Synthesis of Nanoparticles
- GaN-based semiconductor devices and materials
- ZnO doping and properties
- Graphene research and applications
- Gas Sensing Nanomaterials and Sensors
- Calcium Carbonate Crystallization and Inhibition
- Additive Manufacturing and 3D Printing Technologies
- Orthopaedic implants and arthroplasty
- Diamond and Carbon-based Materials Research
- TiO2 Photocatalysis and Solar Cells
- Graphene and Nanomaterials Applications
- Electronic and Structural Properties of Oxides
- Transition Metal Oxide Nanomaterials
- Advanced Photocatalysis Techniques
- Facial Trauma and Fracture Management
- biodegradable polymer synthesis and properties
- Titanium Alloys Microstructure and Properties
- Glass properties and applications
- Advanced Physical and Chemical Molecular Interactions
National Institute of Materials Physics
2015-2024
University of Bucharest
2010-2011
Universitatea Națională de Știință și Tehnologie Politehnica București
2010
University of Maryland, College Park
2001
Pennsylvania State University
1998-2000
Model calculations are presented which predict whether or not an arbitrary gas experiences significant absorption within carbon nanotubes and/or bundles of nanotubes. The potentials used in these assume a conventional form, based on sum two-body interactions with individual atoms; the latter employ energy and distance parameters derived from empirical combining rules. results confirm intuitive expectation that small atoms molecules absorbed both interstitial channels tubes, while large...
An overview is presented of the various phases predicted to occur when gases are absorbed within a bundle carbon nanotubes. The behavior may be characterized by an effective dimensionality, which depends on species and temperature. Small molecules strongly attracted interstitial channels between tubes. There, they undergo transitions ordered disordered quasi-one-dimensional (1D) phases. Both small large display 1D and/or 2D phase adsorbed nanotubes, depending thermodynamic conditions....
Hydroxyapatite is a calcium phosphate intensively proposed as bone substitution material because of its resemblance to the constituents minerals present in natural bone. Since hydroxyapatite's properties are mainly adequate for nonload bearing applications, different solutions being tested improving these and upgrading them near target values On other hand, starch (a biodegradable polymer) blends with polymers have been hydroxyapatite mixtures due adhesive, gelling, swelling abilities...
Obtaining nanoscale materials has allowed for the miniaturization of components, which led to possibility achieving more efficient devices with faster functions and much lower costs. While hydroxyapatite [HAp, Ca10(PO4)6(OH)2] is considered most widely used material medical applications in orthopedics, dentistry, general surgery, magnesium (Mg) viewed as a promising biodegradable biocompatible implant material. Furthermore, Mg regarded strong candidate developing implants due its...
Abstract: Synthetic physiological fluids are currently used as a first in vitro bioactivity assessment for bone grafts. Our understanding about the interactions taking place at fluid–implant interface has evolved remarkably during last decade, and does not comply with traditional International Organization Standardization/final draft Standard 23317 protocol purely inorganic simulated body fluid. The advances our knowledge point to need of true paradigm shift toward testing enhanced...
Novel biomaterials with promising bone regeneration potential, derived from rich, renewable, and cheap sources, are reported. Thus, thin films were synthesized marine-derived (i.e., fish bones seashells) hydroxyapatite (MdHA) by pulsed laser deposition (PLD) technique. Besides the physical-chemical mechanical investigations, deposited also evaluated in vitro using dedicated cytocompatibility antimicrobial assays. The morphological examination of MdHA revealed fabrication rough surfaces,...
Abstract In this work, an improved version of the radio frequency magnetron sputtering (RF‐MS) technique was used to prepare highly adherent B‐type carbonated hydroxylapatite (B‐CHA) thin films. Fourier transform infrared spectroscopy (FTIR) and grazing incidence X‐ray diffraction studies proved that coatings maintained composition revealed polycrystalline structure HA. Scanning electron microscopy analysis showed CHA films are rough exhibit a homogeneous microstructure. Energy‐dispersive...
Ag/Ga were incorporated into resorbable orthopaedic phosphate bioactive glasses (PBG, containing P, Ca, Mg, Na, and Fe) thin films to demonstrate their potential limit growth of Staphylococcus aureus Escherichia coli in post-operative prosthetic implantation. Dual target consecutive co-sputtering was uniquely employed produce a 46 nm Ag:PBG composite observed by high resolution TEM consist uniformly dispersed ~5 metallic Ag nano-particles glass matrix. Ga3+ integrated preform which magnetron...
The use of resorbable magnesium alloys in the design implants represents a new direction healthcare domain. Two main research avenues are currently explored for developing or improving metallic biomaterials: (i) increase their corrosion resistance by designed compositional and structural modifications, (ii) functionalization surfaces coating with ceramic polymeric layers. objective this work was to comparatively assess bio-functional coatings (i.e., highly-crystallized hydroxyapatite...
The aim of this study was to evaluate the adhesion different bioceramic coatings deposited by radio frequency magnetron sputtering on biodegradable implant-type magnesium–calcium (MgCa) alloys. Hydroxyapatite (HA) and bioactive glass (BG) were chosen as coating materials, due their remarkable biological potential. morphology, composition, structure thin characterized scanning electron microscopy, atomic force energy dispersive X-ray spectroscopy, grazing incidence diffraction, Fourier...