Browsing División de Nanociencias y Materiales by Issue Date
Now showing items 2140 of 522

Transitional behaviour in the transformation from active end planes to stable loops caused by annealing
(IOP Publishing, 2003)"Here we investigate the stabilization process on the active outer/inner surfaces (or the end plane of a graphene sheet) for shortened cupstackedtype carbon nanotubes caused by annealing, utilizing both analytic and ... 
Theoretical characterization of several models of nanoporous carbon
(IOP Publishing, 2003)"Elastic, electronic and vibrational properties of seven models of nanoporous carbon are reported. The studied structures are periodic graphitic arrangements with heptagonal and octagonal rings of carbon, known as Schwarzites. ... 
Curved nanostructured materials
(IOP Publishing, 2003)"Graphite is a layered material that is very flexible, in which each layer is able to curve in order to form cages, nanotubes, nanocoils, nanocones, etc. In this paper, we demonstrate that various synthetic routes are ... 
Sistemas finitos bajo presión
(2004)"El estudio de estructuras bajo condiciones extremas como altas presiones, pueden entregarnos nuevas configuraciones y/o situaciones que son metaestables bajo condiciones normales. Estas transiciones pueden estar asociadas ... 
Classical harmonic oscillator with Diraclike parameters and possible applications
(2004)"We obtain a class of parametric oscillation modes that we call Kmodes with damping and absorption that are connected to the classical harmonic oscillator modes through the “supersymmetric” onedimensional matrix procedure ... 
The hyperbolic, the arithmetic and the quantum phase
(2004)"We develop a new approach of the quantum phase in an Hilbert space of finite dimension which is based on the relation between the physical concept of phase locking and mathematical concepts such as cyclotomy and the ... 
Mutually unbiased bases and finite projective planes
(2004)"It is conjectured that the question of the existence of a set of d+1 mutually unbiased bases in a ddimensional Hilbert space if d differs from a power of a prime number is intimately linked with the problem of whether ... 
Barotropic FRW cosmologies with a Diraclike parameter
(2004)"Using the known connection between Schroedingerlike equations and Diraclike equations in the supersymmetric context, we discuss an extension of FRW barotropic cosmologies in which a Dirac masslike parameter is introduced. ... 
New direction in nanotube science
(Elsevier, 2004)"We review the latest advances in the production and stateofthe art characterization of B and Ndoped carbon nanotubes (CNTs) and nanofibers. We briefly discuss different approaches to producing these novel doped ... 
Novel curved and strained carbonbased nanostructures: a theoretical study of their electronic properties and their response to laser excitations.
(2005)"In this thesis we review and discuss, from a theoretical point of view, the physical properties of a wide variety of carbonbased nanomaterials. This work is focused on systems in which the atomic structures exhibit one ... 
Espectroscopía óptica aplicada al análisis químico de la sangre
(2005)"El análisis de algunos constituyentes de la sangre provee información de diagnostico en los procedimientos clínicos. Motivo por el cual es de gran interés en la comunidad medica el desarrollo de métodos ópticos mediante ... 
Nonlinear software sensor for monitoring genetic regulation processes with noise and modeling errors
(2005)"Nonlinear control techniques by means of a software sensor that are commonly used in chemical engineering could be also applied to genetic regulation processes. We provide here a realistic formulation of this procedure ... 
Supersymmetric pairing of kinks for polynomial nonlinearities
(2005)"We show how one can obtain kink solutions of ordinary differential equations with polynomial nonlinearities by an efficient factorization procedure directly related to the factorization of their nonlinear polynomial part. ... 
Nonlinear second order Ode's: factorizations and particular solutions
(2005)"We present particular solutions for the following important nonlinear second order differential equations: modified Emden, generalized Lienard, convective Fisher, and generalized BurgersHuxley. For the latter two equations ... 
Riccati nonhermiticity with application to the Morse potential
(2005)"A supersymmetric onedimensional matrix procedure, similar to the relationships of the same type between Dirac and Schrodinger equations in particle physics, is described in the general terms. By this means, we are able ... 
Mutually unbiased phase states, phase uncertainties, and Gauss sums
(2005)"Mutually unbiased bases (MUBs), which are such that the inner product between two vectors in different orthogonal bases is a constant equal to 1/d?, with d the dimension of the finite Hilbert space, are becoming more and ... 
Synchronization of the frenetserret linear system with a chaotic nonlinear system by feedback of states
(2005)"A synchronization procedure of the generalized type in the sense of Rulkov et al [Phys. Rev. E 51, 980 (1995)] is used to impose a nonlinear Malasoma chaotic motion on the FrenetSerret system of vectors in the differential ... 
The threestep master equation: class of parametric stationary solutions
(2005)"We examine the threestep master equation from the standpoint of the general solution of the associated discrete Riccati equation. We report by this means stationary master solutions depending on a free constant parameter, ...