A5024412006- Carbon Nanotubes in Composites
- Graphene research and applications
- Physics of Superconductivity and Magnetism
- Advanced biosensing and bioanalysis techniques
- Nanoparticles: synthesis and applications
- Neuroscience and Neural Engineering
- Analytical Chemistry and Sensors
- Electrochemical sensors and biosensors
- Mechanical and Optical Resonators
- HVDC Systems and Fault Protection
- Bacterial biofilms and quorum sensing
- Superconducting Materials and Applications
- Molecular Junctions and Nanostructures
- Force Microscopy Techniques and Applications
- Nanopore and Nanochannel Transport Studies
- Electrochemical Analysis and Applications
- Catalytic Processes in Materials Science
- Advancements in Battery Materials
- Graphene and Nanomaterials Applications
- Ion-surface interactions and analysis
- Nanotechnology research and applications
- Advanced MEMS and NEMS Technologies
- Diamond and Carbon-based Materials Research
- Metal and Thin Film Mechanics
- Advanced Nanomaterials in Catalysis
Universitat Politècnica de Catalunya
2011-2018
FC Barcelona
2014
Nanomaterials and Nanotechnology Research Center
2008-2010
Institut de Microelectrònica de Barcelona
2010
Institut Català de Nanociència i Nanotecnologia
2006-2009
Universitat Autònoma de Barcelona
2007-2008
Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona
2008
University of Surrey
1998-2007
Institut de Ciència de Materials de Barcelona
1998-2003
Consejo Superior de Investigaciones Científicas
1999-2002
Textiles are good substrates for growth of microorganisms especially under moisture and temperature conditions found in hospitals. Microbial shedding from the body occurs continuously at contact patient with textile materials used medical practices, contributing to occurrence hospital acquired infections. Thus, use efficient antimicrobial textiles is necessary prevent transfer pathogens infection incidence. In this work, hybrid coatings were generated on cotton fabrics by means a one-step...
Bacteria often colonize in-dwelling medical devices and grow as complex biofilm communities of cells embedded in a self-produced extracellular polymeric matrix, which increases their resistance to antibiotics the host immune system. During growth, bacterial cooperate through specific quorum-sensing (QS) signals. Taking advantage this mechanism formation, we hypothesized that interrupting communication among bacteria simultaneously degrading matrix would inhibit growth. To end, coatings...
Catheter associated urinary tract infections are common during hospitalization due to the formation of bacterial biofilms on indwelling device. In this study, we report an innovative biotechnology-based approach for covalent functionalization silicone catheters with antifouling zwitterionic moieties prevent biofilm formation. Our combines potential bioactivity a natural phenolics layer biocatalytically conjugated sulfobetaine-acrylic residues in enzymatically initiated surface radical...
Small gold nanoclusters in a very narrow size distribution (1.1 ± 0.5 nm) have been stabilized onto multiwalled carbon nanotubes (MWCNT). Theoretical studies supported by XPS and 16O2/18O2 isotopic exchange experiments shown that, on small nanoparticles (0.9–1.5 nm), dissociation of molecular O2 formation surface oxide-like layer is energetically favorable occurs at room temperature, while recombination desorption involves larger activation barrier. CO titration theoretical demonstrate that...
Purification and shortening of single-walled carbon nanotubes (SWNTs) is carried out by treatment with steam. During the steam purification graphitic shells coating catalytic metal particles are removed. Consequently, exposed can be easily dissolved hydrochloric acid. No damage to nanotube tubular structure observed, even after prolonged Samples characterized HRTEM, TGA, magnetic measurements, Raman spectroscopy, AFM, XPS.
A robust viral sensor was developed by bridging a pair of gold electrodes with antibody-coated peptide nanotubes. The nanotubes concentrated the target virus on their surface molecular recognition between antibody and (see picture). fit perfectly within electric field line distribution to enable extremely sensitive impedimetric detection particles. Detailed facts importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or...
Studies regarding the environmental impact of engineered nanoparticles (ENPs) are hampered by lack tools to localize and quantify ENPs in water, sediments, soils, organisms. Neutron activation mineral offers possibility labeling a way that avoids surface modification permits both localization quantification within matrix or an organism. Time-course experiments vivo also may be conducted with small organisms study metabolism exposure, two aspects currently lacking ecotoxicological knowledge...
Laccase-assisted assembling of hybrid biopolymer–silver nanoparticles and cork matrices into an antimicrobial material with potential for water remediation is herein described. Amino-functional biopolymers were first used as doping agents to stabilize concentrated colloidal dispersions silver (AgNP), additionally providing the particles functionalities covalent immobilization onto impart a durable antibacterial effect. The solvent-free AgNP synthesis by chemical reduction was carried out in...
In this study, freestanding nanobiocomposite films were obtained by the sequential deposition of biopolymer-capped silver nanoparticles (AgNPs) and hyaluronic acid (HA). At first, dispersions AgNPs decorated with chitosan (CS) or aminocellulose (AC) synthesized applying high intensity ultrasound. These polycationic nanoentities layer-by-layer assembled HA polyanion to generate stable 3D supramolecular constructs, where play dual role active agent structural element. SEM images assemblies...
RNA is used to purify carbon nanotubes (CNTs) in a simple, two-step method that does not require time-intensive process or harsh chemical physical treatments. The purity of the RNA-purified CNTs demonstrated by variety characterization methods such as AFM (see figure), confirming treatment RNA-wrapped with ribonuclease A effectively removes RNA, allowing subsequent recovery pure CNTs. Supporting information for this article available on WWW under...
Carbon nanotube–polymer composites have shown to be suitable materials for the fabrication of electrochemical transducers. The exposed surface these is commonly passivated by a very thin layer polymer component that buries conductive carbon particles. Working with multi-walled nanotube–polystyrene (MWCNT–PS) composite structures, it was previously described how simple low power oxygen plasma process produced an effective etching surface, thereby exposing CNTs. This work shows this not only...
An ultralow concentration of Pb ions is detected by a sensor integrating peptide nanotube detection platform with smart function that specifically metalizes the target ion. As PbII-binding on nanotube, which bridges two electrodes, templates nanowires, resistor appears in circuit, and conductance as signal for PbII.
In this work we present the fabrication and characterization of immunosensors based on polystyrene (PS)-multiwalled carbon nanotube (MWCNT) composites.The electrochemical properties sensors have been investigated show that surface area is increased upon addition MWCNT-PS layer.Furthermore, a plasma activation process used to partially remove PS expose MWCNTs.This results in huge increase opens up possibility binding biomolecules MWCNT wall.The MWCNTs functionalized covalently with model...