Browsing by Subject "Nanotubs de carboni"
Now showing items 21-40 of 45
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Impedance characterization of transparent and flexible carbon nanotubes thin film networks
(2011)
Conference report
Restricted access - publisher's policy -
Manufacturing and characterization of printed strain gauges based on carbon nanotubes
(Universitat Politècnica de Catalunya, 2010-05-01)
Master thesis
Restricted access - confidentiality agreement -
Manufacturing variability analysis in carbon nanotube technology: a comparison with bulk CMOS in 6T SRAM scenario
(2011)
Conference report
Restricted access - publisher's policyIn silicon bulk CMOS technology the variability of the device parameters is a key drawback that may be a limiting factor for further miniaturizing nodes. New nanoscale beyond-CMOS devices are being studied such as carbon ... -
Mass sensing for the advanced fabrication of nanomechanical resonators
(ACS, 2019-09-03)
Article
Open AccessWe report on a nanomechanical engineering method to monitor matter growth in real time via e-beam electromechanical coupling. This method relies on the exceptional mass sensing capabilities of nanomechanical resonators. ... -
Modelling the elastic behaviour of carbon nanotube-reinforced composites
(2011)
Conference report
Restricted access - publisher's policyCarbon nanotubes (CNTs), since their discovery by Lij ima in 1991 [1], are considered a new generation of reinforcement [2]. Their "nano" size structure makes them potentially free of defects, which provides them with ... -
Nanocomposites based on chain extended poly(l-lactic acid)/carboxylated carbon nanotubes: crystallization kinetics and lamellar morphology
(2019-06-01)
Article
Open AccessIsothermal and nonisothermal crystallization kinetics of poly(l-lactide) and its nanocomposites with different multiwalled carbon nanotubes (i.e., pristine and functionalized) were investigated. The effects of chain extension ... -
Nanometric particles of high economic value in coal fire region: opportunities for social improvement
(2020-05-20)
Article
Open AccessSpontaneous coal combustion in the La Guajira coals was studied for the presence of carbon nanophases (e.g., carbon nanotubes), occurrence of rare earth elements (REEs) in them, and the probable mechanisms for concentration ... -
Nonlinear mechanical response and rippling of thick multi-walled carbon nanotubes
(2003-11)
Article
Open AccessThe measured drop of the effective bending stiffness of multiwalled carbon nanotubes (MWCNTs) with increasing diameter is investigated by a generalized local quasicontinuum method. The previous hypothesis that this reduction ... -
Nucleation and antinucleation effects of functionalized carbon nanotubes on cyclic and linear Poly(e-caprolactones)
(American Chemical Society (ACS), 2014-06-10)
Article
Restricted access - publisher's policyNovel nanocomposites were prepared by blending linear or cyclic poly(e-caprolactones) with two types of chemically modified carbon nanotubes (CNTs). The low-polydispersity cyclic PCL samples (C-PCLs) were synthesized by ... -
Numerical modelling of behaviour of carbon nanotube-reinforced composites
(Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE), 2011)
Conference report
Open AccessSince their discovery by Lijima in 1991[1], carbon nanotubes (CNTs), are considered a new generation of reinforcement [2]. Their "nano" size structure makes them potentially free of defects, which provides them with ... -
Occurrence of carbon nanotubes and implication for the siting of elements in selected anthracites
(2020-03-01)
Article
Open AccessPetrographic, geochemical, and electron microbeam investigations of selected anthracites and anthracite-rank coaly shales were conducted. The Pennsylvania, Rhode Island, and KwaZu-Natal anthracites show an enrichment in ... -
Opportunities for radio frequency nanoelectronic integrated circuits using carbon-based technologies
(Universitat Politècnica de Catalunya, 2014-07-07)
Doctoral thesis
Open AccessThis thesis presents a body of work on the modeling of and performance predictions for carbon nanotube field-effect transistors (CNFET) and graphene field-effect transistors (GFET). While conventional silicon-based CMOS ... -
Optical and Electrical characterization of Carbon Nanotube based high-Q mechanical resonators
(Universitat Politècnica de Catalunya, 2014-06-10)
Master thesis
Open Access[ANGLÈS] Carbon Nanotubes have been one of the most intensively studied materials in the last two decades. Because of their combination of outstanding properties (mechanical, thermal, electrical, optical, etc.) the community ... -
Prediction of the elastic modulus of LLDPE/CNT nanocomposites by analytical modeling and finite element analysis
(Elsevier, 2020-09)
Article
Open AccessIn the present work, the effective elastic modulus of carbon nanotube (CNT) polymer nanocomposites has been evaluated through micromechanics modeling and finite element analysis (FEA). In the micromechanics model, the ... -
Preparation of nanocomposites of poly(epsilon-caprolactone) and multi-walled carbon nanotubes by ultrasound micro-molding. Influence of nanotubes on melting and crystallization
(2017-08-01)
Article
Open AccessUltrasound micro-molding technology was successfully applied to prepare nanocomposites based on a poly(e-caprolactone) (PCL) matrix and multi-walled carbon nanotubes (MWCNTs). Optimization of processing parameters (i.e. ... -
Processing and characterization of high-density zirconia-carbon nanotube composites
(2012-07-15)
Article
Restricted access - publisher's policyAddition of multiwall carbon nanotubes (MWCNTs) to polycrystalline ceramics is currently considered as a potential method for improving their mechanical properties, mainly their fracture toughness. High density composites ... -
Rare earth elements and carbon nanotubes in coal mine around spontaneous combustions
(2020-04-20)
Article
Open AccessIncreasing population growth and rise global energy petition have made congregation the requests of energy generation and safety a major challenge global. In another hand nanogeoscience is commencing to develop a viable ... -
Recent advances in carbon-based polymer nanocomposites for electromagnetic interference shielding
(2019-06)
Article
Open AccessCarbon-based nanoparticles have recently generated a great attention, as they could create polymer nanocomposites with enhanced transport properties, overcoming some limitations of electrically-conductive polymers for high ... -
Rippling and a phase-transforming mesoscopic model for multiwalled carbon nanotubes
(2008-04)
Article
Open AccessWe propose to model thick multiwalled carbon nanotubes as beams with non-convex curvature energy. Such models develop stressed phase mixtures composed of smoothly bent sections and rippled sections. This model is motivated ... -
Size dependent nonlinear elastic scaling of multiwalled carbon nanotubes
(2008-02)
Article
Open AccessWe characterize through large-scale simulations the nonlinear elastic response of multi-walled carbon nanotubes (MWNCNTs) in torsion and bending. We identify a unified law consisting of two distinct power-law regimes in ...