Finite size effects in the dynamics and thermodynamics of 2D Coulomb clustersThe dynamics and thermodynamics of melting in two-dimensional Coulomb clusters is revisited using molecular dynamics and Monte Carlo simulations. Several parameters are considered, including the…E. Yurtsever, F. Calvo, D. J. Wales·Nov 4, 2005SaveLearn
Non-contact atomic force microscopy: Stability criterion and dynamical responses of the shift of frequency and damping signalThe aim of this article is to provide a complete analysis of the behavior of a noncontact atomic force microscope (NC-AFM). We start with a review of the equations of motion of a tip interacting with…Gérard Couturier, Rodolphe Boisgard, Laurent Nony et al.·Oct 21, 2005SaveLearn
Stability analysis of an oscillating tip-cantilever system in NC-AFMThis paper is a theoretical and a numerical investigation of the stability of a tip-cantilever system used in noncontact atomic force microscopy (NC-AFM) when it oscillates close to a surface. No…Gérard Couturier, Laurent Nony, Rodolphe Boisgard et al.·Oct 14, 2005SaveLearn
Relationship between the non linear dynamic behaviour of an oscillating tip-microlever system and the contrast at the atomic scaleIn this paper, the dynamic behaviour of an oscillating tip-microlever system at the proximity of a surface is discussed. The attractive tip-surface interaction is simply described with a Van der…Jean-Pierre Aimé, Gérard Couturier, Rodolphe Boisgard et al.·Oct 13, 2005SaveLearn
Nonlinear Dynamic Behavior of an Oscillating Tip-Microlever System and Contrast at the Atomic ScaleIn this paper the dynamic behavior of an oscillating tip-microlever system at the proximity of a surface is discussed. We show that the nonlinear behavior of the oscillator is able to explain the…Jean-Pierre Aimé, Rodolphe Boisgard, Laurent Nony et al.·Oct 13, 2005SaveLearn
Growth kinetics of a nanoprotuberance under the action of an oscillating nanotipThe atomic force microscope is a versatile tool that allows many routes to be used for investigating the mechanical properties of soft materials on the nanometer scale. In the present work,…Jean-Pierre Aimé, Denis Michel, Rodolphe Boisgard et al.·Oct 13, 2005SaveLearn
Nonlinear dynamical properties of an oscillating tip-cantilever system in the tapping modeThe dynamical properties of an oscillating tip-cantilever system are now widely used in the field of scanning force microscopy. The aim of the present work is to get analytical expressions describing…Laurent Nony, Rodolphe Boisgard, Jean-Pierre Aimé·Oct 11, 2005SaveLearn
Influence of noncontact dissipation in the tapping mode: Attempt to extract quantitative information on the surface properties with the local force probe methodIn the Tapping mode, a variation of the oscillation amplitude and phase as a function of the tip sample distance is the necessary measurement to access quantitatively to the properties of the…Jean-Pierre Aimé, Rodolphe Boisgard, Laurent Nony et al.·Oct 11, 2005SaveLearn
Stability of an oscillating tip in Non-Contact Atomic Force Microscopy: theoretical and numerical investigationsThis paper is a theoretical and a numerical investigation of the stability of a tip-cantilever system used in Non-Contact Atomic Force Microscopy (NC-AFM) when it oscillates close to a surface. No…Gérard Couturier, Laurent Nony, Rodolphe Boisgard et al.·Oct 11, 2005SaveLearn
Stability criterions of an oscillating tip-cantilever system in dynamic force microscopyThis work is a theoretical investigation of the stability of the non-linear behavior of an oscillating tip-cantilever system used in dynamic force microscopy. Stability criterions are derived that…Laurent Nony, Rodolphe Boisgard, Jean-Pierre Aimé·Oct 11, 2005SaveLearn
Structural Characterization of Self-Assembled Monolayers of Organosilanes Chemically Bonded on Silica Wafers by Dynamical Force MicroscopyIn this article, a dynamical force microscopy study of self-assembled monolayers of organosilanes, grafted on a silica support, is reported. Organosilanes, terminated either with a functional group…Sébastien Navarre, Franck Choplin, J. Bousbaa et al.·Oct 11, 2005SaveLearn
Configuration interaction study of single and double dipole plasmon excitations in Na8We carry out a microscopic analysis of the ground and excited states of the Na8 metal cluster within the jellium model. We perform a series of configuration interaction calculations on a…F. Catara, D. Gambacurta, M. Grasso et al.·Sep 20, 2005SaveLearn
Determination of the lowest energy structure of Ag8 from first-principles calculationsThe ground-state electronic and structural properties, and the electronic excitations of the lowest energy isomers of the Ag8 cluster are calculated using density functional theory (DFT) and…M. Pereiro, D. Baldomir·Sep 16, 2005SaveLearn
Exact exchange optimized effective potential and self-compression of stabilized jellium clustersIn this work, we have used the exchange-only optimized effective potential in the self-consistent calculations of the density functional Kohn-Sham equations for simple metal clusters in stabilized…M. Payami·Aug 22, 2005SaveLearn
Self-consistent iterative solution of the exchange-only OEP equations for simple metal clusters in jellium modelIn this work, employing the exchange-only orbital-dependent functional, we have obtained the optimized effective potential using the simple iterative method proposed by Kümmel and Perdew [S. Kümmel…M. Payami, Tahereh Mahmoodi·Aug 17, 2005SaveLearn
A Hybrid Density Functional Study of Armchair Si and Ge NanotubesFirst principles calculations based on hybrid density functional theory have been used to study the electronic and geometric properties of armchair silicon and germanium nanotubes ranging from A (3,…Prachi Pradhan, Asok Ray·Jul 28, 2005SaveLearn
Numerical Study of Structural Phase Transitions in a Vertically Confined Plasma CrystalDusty plasmas consists of an ionized gas containing small (usually negatively charged) particles. Dusty plasmas are of interest in both astrophysics and space physics as well as in research in plasma…K. Qiao, T. W. Hyde·Jul 12, 2005SaveLearn
Equilibrium spherically curved 2D Lennard-Jones systemsTo learn about basic aspects of nano-scale spherical molecular shells during their formation, spherically curved two-dimensional N-particle Lennard-Jones systems are simulated, studying curvature…J. M. Voogd, P. M. A. Sloot, R. van Dantzig·Jul 6, 2005SaveLearn
Low intensity threshold values for keV X-ray production in laser-cluster interactionAbsolute Ar XK (3 keV) and Xe XL (4 keV) photon yields are measured as a function of laser peak intensity, for large (104 - 105 atoms) argon and xenon clusters submitted to intense laser pulses. A…C. Prigent, L. Adoui, E. Lamour et al.·Jul 6, 2005SaveLearn
Differential Form of the Skornyakov--Ter-Martirosyan EquationsThe Skornyakov--Ter-Martirosyan three-boson integral equations in momentum space are transformed into differential equations. This allows us to take into account quite directly the Danilov condition…F. M. Pen'kov, W. Sandhas·Jul 5, 2005SaveLearn
Laser-cluster interaction: x-ray production by short laser pulsesWe investigate the heating of the quasi-free electrons in large rare gas clusters (N exceeding 105 atoms) by short laser pulses at moderate intensities (I~1015 Wcm-2). We identify elastic…C. Deiss, N. Rohringer, E. Lamour et al.·Jun 29, 2005SaveLearn
Optical absorption by magnesia-supported gold clusters and nanocatalysts: effects from the support, cluster and adsorbantsPolarization-resolved optical spectra of magnesia-supported gold clusters AuN/MgO (N=1,2,4,8), bound at a surface color center Fs of the MgO(100) face, are calculated from the time-dependent…Michael Walter, Hannu Häkkinen·Jun 14, 2005SaveLearn
Electron dynamics in strong laser pulse illuminationWe analyze the dynamics of up to 105 electrons resulting from illuminating a Xenon cluster with 9093 atoms with intense laser pulses of different length and peak intensity. Interesting details of…Ulf Saalmann, Jan M. Rost·May 26, 2005SaveLearn
Long range intermolecular forces in triatomic systems: connecting the atom-diatom and atom-atom-atom representationsThe long-range forces that act between three atoms are analysed in both atom-diatom and atom-atom-atom representations. Expressions for atom-diatom dispersion coefficients are obtained in terms of…Marko T. Cvitas, Pavel Soldan, Jeremy M. Hutson·May 19, 2005SaveLearn
The spectra of mixed 3He-4He dropletsThe diffusion Monte Carlo technique is used to calculate and analyze the excitation spectrum of 3He atoms bound to a cluster of 4He atoms, by using a previously determined optimum filling of…S. Fantoni, R. Guardiola, J. Navarro et al.·May 4, 2005SaveLearn