Topic: Informatics, Modeling & Simulation
FE-Simulation of Fast Switching Behavior of Magnetic Nanoelements
Numerical micromagnetics is an essential tool to optimize magnetic storage media, spin electronic devices, such as MRAM and microsensors. The application of these devices requires a profound knowledge of the reversal mechanism. In nanostructured magnets [...]
Studies on a DNA Double Helicoidal Structure Immersed in Viscous Bio-Fluid
The paper aims at extending, utilising and generalising research in nonlinear dynamics of (i) spiral/helicoidal structures, and (ii) viscous, low speed fluid to biomechanical DNA fluid-structure interaction. Employing a nonlinear helicoidal model, the energy stored [...]
Simulation of Carbon Nanotube-based Nanoelectromechanical Switches
We study the pull-in voltage characteristics of several multiwall nanotube electromechanical switches such as suspended carbon nanotubes over a graphitic ground lectrode. Electromechanical analysis has been performed by accounting for three coupled energy domains: elastostatics, [...]
Femtosecond Energy Concentration in Nanosystems Coherently Controlled by Excitation Phase Modulation
We predict and quantitatively evaluate the unique possibility of concentrating the energy of an ultrafast excitation of a nanosystem in a small part of the whole system by means of coherent control (phase modulation of [...]
Molecular-Dynamics Study of Physical Properties in Sintered Nano-Particles
Kadau D., Kadau K., Lomdahl P.S., Entel P., Kadau D., Kadau K., Kreth M., Germann T.C., Holian B.L., Westerhoff F., Wolf D.E., Los Alamos National Laboratory, US
Nano-crystalline metals, in which the size of grains is in the nanometer range, exhibit physical properties different from ordinary polycrystalline materials, thus these materials are of technological interest [1]. One example is the increasing hardness [...]
The Electroreduction of Hydrogen on Pt(111)
The electroreduction of hydrogen on Pt(111) in acidic media is the primary fuel cell reaction. The explicit mechanism for this process involves a first order phase transition, which is due to the rotation of the [...]
An Effective Model for Microscopic Intrinsic Localized Modes
We present a system of coupled degrees of freedom that can effectively describe the localization of intra-molecular excitations in the charge transfer solid PtCl. These excitations correspond to the Raman active motion of chlorines (symmetric [...]
Three Dimensional Adhesion Model for Arbitrary Rough Surfaces
We present a 3D adhesion model based on the JKR theory applied locally for all contacting asperity couple and the calculations account the van der Waals interaction beside the externally applied force. Thus, equilibrium of [...]