Advantages of the Surface Structuration of KBr Materials for Spectrometry and Sensors

Abstract

A potassium bromide (KBr) material, which has been widely used as the key element in Fourier spectrometers and as the output window of the IR-lasers, was studied via applying carbon nanotubes in order to modify the potassium bromide surface. The laser-oriented deposition method was used to place the carbon nanotubes at the matrix material surface in the vertical position at different electric fields varying from 100 to 600 V × cm−1. The main idea of the improvement of the spectral properties of the potassium bromide structure is connected with the fact that the refractive index of the carbon nanotubes is substantially less than the refractive index of the studied material, and the small diameter of the carbon nanotubes allows one to embed these nano-objects in the voids of the lattice of the model matrix systems. Moreover, the mechanical characteristics and wetting features of potassium bromide structures have been investigated under the condition mentioned above. Analytical and quantum-chemical simulations have supported the experimental results.

Carbon Nanotubes Use for the Semiconductors ZnSe and ZnS Material Surface Modification via the Laser-Oriented Deposition Technique

“…To modify the surface, the IR CO 2 laser with p-polarized irradiation at the wavelength of 10.6 µm and the power of 30 W has been used. The general view of the block scheme has been shown in [25]. It is shown that the laser system was connected with a vacuum hood, which contains the fixing unit samples and the device for depositing substances on the substrate.…”

Surface Heterostructure of Aluminum with Carbon Nanotubes Obtained by Laser-Oriented Deposition

“…The surface heterostructure fabrication using the laser-oriented deposition technique was previously described in [21,22]. The laser-oriented deposition technique was used to improve basic parameters of the inorganic crystals of KBr and LiF with carbon nanotubes (CNTs) and showed an advanced performance of the produced surface heterostructure [23,24].…”

A Comparative Study between Knocked-Down Aligned Carbon Nanotubes and Buckypaper-Based Strain Sensors

“…While CNTs mechanical performance and piezoresistive response make them suitable for sensing applications, the electric anisotropy of aligned CNTs can be used to infer strain directions [3]. This nanomaterial can be incorporated into polymer-based sensors in several ways:As conductive fillers in polymer nanocomposites [4,5], through mechanical mixing and deposition methods, such as coating, dip casting, and filtration, among others;As Buckypaper films (BP), produced by dispersion and deposition methods, such as vacuum filtration (the most common method), drop casting, or hot-press compression, among others [6,7];As vertically aligned CNT forests (VA-CNTs), synthesized by chemical vapor deposition (CVD), incorporated into polymeric matrices and substrates [8,9]; andAs vertically aligned CNT forests (VA-CNTs), synthesized by laser-oriented deposition (LOD) method directly into the matrices, allowing the incorporation of CNTs due to the covalent bounds formed during the process [10]. Furthermore, a dramatic change of materials resistivity via LOD application is reported in the literature [11].…”

“…As vertically aligned CNT forests (VA-CNTs), synthesized by laser-oriented deposition (LOD) method directly into the matrices, allowing the incorporation of CNTs due to the covalent bounds formed during the process [10]. Furthermore, a dramatic change of materials resistivity via LOD application is reported in the literature [11].…”