Browsing by Subject "Nanotubs de carboni"
Now showing items 1-20 of 46
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4He adsorbed outside a single carbon nanotube
(2012-10-08)
Article
Open AccessThe phase diagrams of 4He adsorbed on the external surfaces of single armchair carbon nanotubes with radii in the range 3.42–10.85 Å are calculated using the diffusion Monte Carlo method. For nanotubes narrower than a ... -
A comparative variability analysis for CMOS and CNFET 6T SRAM cells
(2011)
Conference report
Restricted access - publisher's policyStatistical device variability may be a limiting factor for further miniaturizing nodes in silicon bulk CMOS technology. On the other hand, in novel technologies such as Carbon Nanotubes Field Effect Transistors (CNFETs), ... -
A finite deformation membrane based on inter-atomic potentials for the transverse mechanics of nanotubes
(2003-03)
Article
Open AccessA finite deformation hyper-elastic membrane theory based on inter-atomic potentials for crystalline films composed of a single atomic layer is developed. For this purpose, an extension of the standard Born rule that exploits ... -
An atomistic-based finite deformation membrane for single layer crystalline films
(2002-09)
Article
Open AccessA general methodology to develop hyper-elastic membrane models applicable to crystalline films one-atom thick is presented. In this method, an extension of the Born rule based on the exponential map is proposed. The ... -
Application of multiwall carbon nanotubes to increase the wear resistance of electrical contacts
(Universitat Politècnica de Catalunya / Universität Saarlandes, 2013)
Bachelor thesis
Restricted access - author's decision
Covenantee: Universität des SaarlandesPresent thesis, is an interdisciplinary project intended to develop an easy applicable, wear durable and electrical contact enhancer for electrical connectors. Employing an already extensively explored carbon nanotubes ... -
Capes primes, transparents i flexibles de nanotubs de carboni: impedància elèctrica i xarxes aleatòries
(Universitat Politècnica de Catalunya, 2010-06-04)
Master thesis (pre-Bologna period)
Open Access -
Carbon nanotube growth process-related variablity in CNFET's
(IEEE Press. Institute of Electrical and Electronics Engineers, 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. Novel nanoscale beyond- CMOS devices are being studied such as carbon ... -
Characterization of epoxi based composite with Carbon Nanotubes
(Universitat Politècnica de Catalunya, 2012-07-20)
Master thesis
Restricted access - author's decisionThis dissertation exposes the characterisation of a nanocomposite made of epoxy resin with carbon nanotubes. The project involves the production of the materials and the fabrication of the specimens to be tested thermally ... -
Continuum mechanics modeling and simulation of carbon nanotubes
(2005-12)
Article
Open AccessThe understanding of the mechanics of atomistic systems greatly benefits from continuum mechanics. One appealing approach aims at deductively constructing continuum theories starting from models of the interatomic interactions. ... -
Diverse corrugation pattern in radially shrinking carbon nanotubes
(2010)
Article
Open AccessStable cross sections of multiwalled carbon nanotubes subjected to electron-beam irradiation are investigated in the realm of the continuum mechanics approximation. The self-healing nature of sp2 graphitic sheets implies ... -
Effective coarse-grained simulations of super-thick multi-walled carbon nanotubes under torsion
(2009-02)
Article
Open AccessUnder torsion and beyond the buckling point, multi-walled carbon nanotubes (MWCNTs) develop a periodic wave-like rippling morphology. Here, we show that torsional rippling deformations can be accurately described by a ... -
Effects of carbon nanotubes/graphene nanoplatelets hybrid systems on the structure and properties of polyetherimide-based foams
(2018-03-21)
Article
Open AccessFoams based on polyetherimide (PEI) with carbon nanotubes (CNT) and PEI with graphene nanoplatelets (GnP) combined with CNT were prepared by water vapor induced phase separation. Prior to foaming, variable amounts of only ... -
Elastic bending modulus of monolayer graphene
(2009-05)
Article
Open AccessAn analytic formula is derived for the elastic bending modulus of monolayer graphene based on an empirical potential for solid-state carbon atoms. Two physical origins are identified for the non-vanishing bending stiffness ... -
Electromechanical testing of smart lime mortars for structural health monitoring
(2022)
Conference report
Open AccessMasonry structures are characterised by low tensile strength and limited ductility. Excessive static or high-cyclic loading or seismic excitation can lead to large localised strains and cracking. It is therefore essential ... -
Estudi per ressonµancia de spin electrònic (ESR) de la puresa dels nanotubs de carboni
(Universitat Politècnica de Catalunya, 2009-12)
Master thesis (pre-Bologna period)
Open AccessAbstract Due to their unique properties, the single walled carbon nanotubes (SWNTs) are very interesting candidates for the development of new electronic devices and sensors. In order to be able to obtain devices with ... -
Fabrication of CNT Double Quantum Dot with integrated Charge Sensor
(Universitat Politècnica de Catalunya, 2024-09-05)
Master thesis
Open AccessNanomechanical systems have the potential to act as versatile platforms for the study of quantum phenomena. In this thesis the fabrication and application of a carbon nanotube (CNT) based charge sensor coupled to a double ... -
Fabrication of thin-film nanocomposite nanofiltration membranes incorporated with aromatic amine-functionalized multiwalled carbon nanotubes. Rejection performance of inorganic pollutants from groundwater with improved acid and chlorine resistance
(2019-01-01)
Article
Open AccessA thin-film nanocomposite nanofiltration (TFN-NF) membrane was fabricated through blending a novel aromatic amine-functionalized multiwalled carbon nanotubes (AAF-MWCNTs) and an aliphatic amine-functionalized multiwalled ... -
Finite crystal elasticity of carbon nanotubes based on the exponential Cauchy-Born rule
(2004-03)
Article
Open AccessA finite deformation continuum theory is derived from interatomic potentials for the analysis of the mechanics of carbon nanotubes. This nonlinear elastic theory is based on an extension of the Cauchy-Born rule called the ... -
Finite element methods for the non-linear mechanics of crystalline sheets and nanotubes
(Wiley and Sons, 2004-01)
Article
Open AccessThe formulation and finite element implementation of a finite deformation continuum theory for the mechanics of crystalline sheets is described. This theory generalizes standard crystal elasticity to curved monolayer ... -
Flexible, transparent electrodes using carbon nanotubes
(2012-12-10)
Article
Open AccessWe prepare thin single-walled carbon nanotube networks on a transparent and flexible substrate with different densities, using a very simple spray method. We measure the electric impedance at different frequencies Z(f) in ...
