Modeling of Laser-Induced Plasmon Effects in GNS-DLC-Based Material for Application in X-ray Source Array Sensors

Abstract

An important direction in the development of X-ray computed tomography sensors in systems with increased scanning speed and spatial resolution is the creation of an array of miniature current sources. In this paper, we describe a new material based on gold nanostars (GNS) embedded in nanoscale diamond-like carbon (DLC) films (thickness of 20 nm) for constructing a pixel current source with photoinduced electron emission. The effect of localized surface plasmon resonance in GNS on optical properties in the wavelength range from UV to near IR, peculiarities of localization of field and thermal sources, generation of high-energy hot electrons, and mechanisms of their transportation in vacuum are investigated. The advantages of the proposed material and the prospects for using X-ray computed tomography in the matrix source are evaluated.

Gold/cobalt ferrite nanocomposite as a potential agent for photothermal therapy

“…The optical properties of CNPs, specifically the spectral absorption patterns under optical radiation by a linearly polarized beam, were investigated using methods previously developed by Yakunin et al as outlined in references [41,42]. The assessment of the functional properties of each CNP component involved determining the zones of field localization, the degree of spatial localization, and finally, the additive absorption values of the heterogeneous CNPs.…”