Exploració per tema "Materials nanoestructurats"
Ara es mostren els items 21-40 de 88
-
Design strategies for ceria nanomaterials: untangling key mechanistic concepts
(2021)
Article
Accés obertThe morphologies of ceria nanocrystals play an essential role in determining their redox and catalytic performances in many applications, yet the effects of synthesis variables on the formation of ceria nanoparticles of ... -
Diffusional approach on electrospun PLLA membranes for caffeine delivery
(Book publisher international, 2021-05-07)
Capítol de llibre
Accés restringit per política de l'editorialOne of the great advantages of electrospun fibers is the large tridimensional area produced, capable of storing any type of material. The aim of our investigation is to study the electrospinning technique to produce polymer ... -
Doping of solution-processed two-dimensional transition metal dichalcogenides
(Universitat Politècnica de Catalunya, 2021-10-31)
Projecte Final de Màster Oficial
Accés obert
Realitzat a/amb: École polytechnique fédérale de LausanneSemiconducting transition metal dichalcogenides (TMDs) such as MoS2, WSe2 or WS2 have attracted a lot of interest in recent years because of their outstanding optoelectronic properties including tunable bandgap or strong ... -
Early defect detection in aerospace parts by means of magnetic nanoparticles
(2006-09)
Projecte de tesi
Accés obertThe goal of the proposed PhD thesis is to develop an innovative NDT technique which fulfils the requirements of end-users in the form of a significant reduction of inspection costs, for a certain range of aerospace NDT ... -
Enhanced thermoelectric performance of n-type bi2se3 nanosheets through sn doping
(2021-07-14)
Article
Accés obertThe cost-effective conversion of low-grade heat into electricity using thermoelectric devices requires developing alternative materials and material processing technologies able to reduce the currently high device manufacturing ... -
Estudio de la influencia del uso de la nanosílice en las propiedades del hormigón.
(Universitat Politècnica de Catalunya, 2012-05-18)
Projecte/Treball Final de Carrera
Accés restringit per acord de confidencialitat -
Excess protons in mesoscopic water-acetone nanoclusters
(2012-11-19)
Article
Accés obertWe carried out molecular dynamics simulation experiments to examine equilibrium and dynamical characteristics of the solvation of excess protons in mesoscopic, [m:n] binary polar clusters comprising m = 50 water molecules ... -
Extraction of microstructural parameters from sculptured thin films nanoindentation
(Elsevier, 2021-11-15)
Article
Accés obertThis work deals with the indentation analysis of nanocolumnar thin films and the difficulties encountered to deduce relevant mechanical parameters by this methodology. SiO2 thin films prepared by physical vapour oblique ... -
Functional hydrogels for energy and (bio)engineering applications
(Universitat Politècnica de Catalunya, 2021-02-11)
Projecte Final de Màster Oficial
Accés obertMultifunctional biomaterials as energy storage devices, biosensors as well as scaffolds are of great interest due to their tunable properties. In this project, an ionically crosslinked conductive hydrogel is prepared of ... -
Functionalization of screen-printed electrodes with grape stalk waste extract-assisted synthesized silver and gold nanoparticles: perspectives of electrocatalytically enhanced determination of uranyl ion and other heavy metals ions
(2023-03-15)
Article
Accés obertRecently, nanotechnology and nanoparticles (NPs) such as AgNPs and AuNPs have become important in analytical chemistry due to their great potential to improve the performance of electrochemical sensors. In this work, Ag ... -
Functionally graded polyurethane/cellulose nanocrystal composites
(2018-06)
Article
Accés obertThe preparation and investigation of functionally graded polymer nanocom-posites, which have a concentration gradient of cellulose nanocrystals (CNCs) along one direction, is reported here. As a test bed, a series of ... -
Grafting polymers from cellulose nanocrystals: synthesis, properties, and applications
(American Chemical Society (ACS), 2018-08-28)
Article
Accés obertOver the past 10 years, the grafting of polymers from the surface of cellulose nanocrystals (CNCs) has gained substantial interest in both academia and industry due to the rapidly growing number of potential applications ... -
Graphene nanoplatelets as a multifunctional filler for polymer foams
(Elsevier, 2016-03)
Article
Accés obertDue to their high mechanical and transport properties, graphene-derived materials have aroused a great deal of interest in the most varied sectors. Among these, graphene nanoplatelets have been gaining interest due to the ... -
Hormigón arquitectónico de altas prestaciones con incorporación de adiciones puzolánicas
(Universitat Politècnica de Catalunya, 2019-07-23)
Projecte Final de Màster Oficial
Accés obertCon el presente estudio se pretende mejorar las características y propiedades del hormigón arquitectónico de altas prestaciones mediante adiciones puzolánicas para su uso en elementos prefabricados de hormigón. Las ... -
Implementation of an effective time-saving two-stage methodology for microstructural characterization of cemented carbides
(2016)
Article
Accés obertLinear intercept on scanning electron microscopy micrographs is the most commonly used measurement method to determine carbide grain size and contiguity in WC–Co cemented carbides (hardmetals). However, it involves manual ... -
Improvements in nanoscale zero-valent iron production by milling through the addition of alumina
(2016-06-02)
Article
Accés obertA new milling procedure for a cost-effective production of nanoscale zero-valent iron for environmental remediation is presented. Conventional ball milling of iron in an organic solvent as Mono Ethylene Glycol produces ... -
Increased conductivity of a hole transport layer due to oxidation by a molecular nanomagnet
(American Institute of Physics, 2008-05-14)
Article
Accés restringit per política de l'editorialThin film transistors based on polyarylamine poly?N,N?-diphenyl-N,N ?bis?4-hexylphenyl?- ?1,1?biphenyl?-4,4?-diamine ?pTPD? were fabricated using spin coating in order to measure the mobility of pTPD upon oxidation. ... -
Influence of microstructure and mechanical properties on the tribological behavior of reactive arc deposited Zr-Si-N coatings at room and high temperature
(Elsevier, 2016-10-25)
Article
Accés obertVarying the Si-content in Zr-Si-N coatings from 0.2 to 6.3 at.% causes microstructural changes from columnar to nanocomposite structure and a hardness drop from 37 to 26 GPa. The softer nanocomposite also displays lower ... -
Influence of the ligand stripping on the transport properties of nanoparticle-based PbSe nanomaterials
(2020-01-07)
Article
Accés obertNanomaterials produced from the bottom-up assembly of nanocrystals may incorporate ~1020–1021 cm–3 not fully coordinated surface atoms, i.e., ~1020–1021 cm–3 potential donor or acceptor states that can strongly affect ... -
Influence of the microstructure on the thermal shock behavior of cemented carbides
(2016-08-15)
Article
Accés obertThe influence of single and repetitive sudden changes of temperature on the mechanical integrity of cemented carbides was investigated as a function of their microstructure. Thermal shock resistance was assessed by testing ...