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We present transient THz spectroscopy studies of graphene nano-flakes imbedded in a polymer medium, forming a nanocomposite with 1% graphene content. We measured both the pure polymer and nanocomposite transmission spectra extending up to 4 THz and by comparing them obtained the absorption, the complex index of reflection, and conductivity of the embedded graphene. The conductivity results follow...
The magnetic field that is generated by different electric devices in an environment of a scanning electron microscope (SEM) causes the direction of the electron beam to become distorted and, consequently, registered images to become distorted. This paper describes a method for a measurement of the magnetic field affecting the direction of the electron beam. It consists of the analysis of SEM images...
Image deformations caused by electromagnetic interference (EMI) are ones of the most frequent undesirable effects in practical scanning electron microscopy. They usually appear, even although the place chosen for a microscope system fulfills EMI conditions, as periodic deformation of vertical edges of an observed specimen. Available, but still very expensive methods for decreasing their influence...
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