Nanomechanics mechanical performance

A schematic view of the nanomechanical GMR device to be considered is presented in Fig. 1. Two fully spin-polarized magnets with fully spin-polarized electrons serve as source and drain electrodes in a tunneling device. In this paper we will consider the situation when the electrodes have exactly opposite polarization. A mechanically movable quantum dot (described by a time-dependent displacement x(t)), where a single energy level is available for electrons, performs forced harmonic oscillations with period T = 2-k/uj between the leads. The external magnetic field is perpendicular to the orientation of the magnetization in both leads. 

Mechanical measurement of the samples was performed on a Nanomechanical Testing System (Tiibolndenter 900, Hysitron, MN), which is capable of both load and displacement controlled modes with load and displacement noise floor of 100 nN and 1 nm, respectively. The force-displacement curves were recorded to evaluate the corresponding mechanical properties. 

The goal of this research is to evaluate the nanoscale morphology and nanomechanical properties of polymer-fiber composites, and to evaluate the differences in surface properties of the samples. The ultimate goal of this research is to contribute to a molecular-level understanding of mechanisms driving adhesion and bonding in polymeric composites, in order to enhance composite bonding/adhesion performance. 

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