Advanced Materials & Manufacturing – Page 640

Phase transition induced hydrodynamic instability

Loh K-K, Saxena A., Lookman T., Parikh A., Los Alamos National Laboratory, US

Instabilities leading to oscillations in some particular properties of a system are intimately related to pattern formation. Nontrivial patterns form spontaneously as a result of the occurrence and propagation of the fronts of instability. These [...]

Ab Initio Molecular Dynamics Simulation on Structure and Strength of Si/Al Interface

Umeno Y., Kitamura T., Kyoto University, JP

It is of great importance to clarify the atomic structure and strength of interfaces between metal and Si substrate in an electronic device. While interaction between atoms near the interface is complicated, ab initio molecular [...]

On the Best Performance of Interacting Agents

Korotkich V., Central Queensland University, AU

Nanotechnology is dependent on harnessing effects of emergent systems, as it relies on the process of taking collections of molecules or individual atoms as building blocks and forming them into useful objects. Emergence can often [...]

Enhanced Structure at the Interface Between the Polymer Matrix and Spherical Nanoparticles in Polymer Based Nanocomposites

Picu R.C., Ozmusul M.S., Rensselaer Polytechnic Institute, US

The effect of a curved solid wall on the conformations of long, flexible polymer chains is studied in a dense polymer system by means of lattice Monte Carlo simulations. The differences with respect to the [...]

Atomic-Level Description of Stress in Dense Polymeric Systems

Picu R.C., Rensselaer Polytechnic Institute, US

A new framework is being developed to describe stress production and relaxation in dnse polymeric systems. Stress is traditionally defined on the molecular scale, with the chaines being regarded as entropic springs. In this view, [...]

Materials and Nanostructures Studies

FE-Simulation of Fast Switching Behavior of Magnetic Nanoelements

Fidler J., Schrefl T., Forster H., Suess D., Dittrich R., Vienna University of Technology, AT

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

Lim C.W., Shu J-J, Nanyang Technological University, SG

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

Dequesnes M., Rotkin S.V., Aluru N.R., University of Illinois at Urbana-Champaign, US

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

Stockman M.I., Faleev S.V., Bergman D.J., Georgia State University, US

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 [...]