Materials Literature
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The aim of this work is to understand the parameters that control the morphology development mechanisms, and especially, the formation of nanodispersions. This study deals with binary blends of polyamide 6 of different molecular weights and maleic anhydride grafted high density polyethylene, processed by reactive extr…
The shape memory behavior in NiTi alloys can be exploited for a wide variety of applications that require active materials. The application dictates the transformation temperatures and hysteresis of the alloy. NiTi alloys with high Ni contents can be precipitation heat treated to produce large changes in the transform…
Atomically thin two-dimensional (2D) semiconductors such as molybdenum disulphide (MoS2) hold great promise in electrical, optical, and mechanical devices and display novel physical phenomena such as coupled spin-valley physics and the valley Hall effect. However, the electron mobility of mono- and few-layer MoS2 has…
We report the structural and optical properties of molecular beam epitaxy (MBE) grown 2-dimensional (2D) material molybdenum diselenide (MoSe2) on graphite, CaF2 and epitaxial graphene. Extensive characterizations reveal that 2H- MoSe2 grows by van-der-Waals epitaxy on all 3 substrates with a preferred crystallographi…
The presence of defects in outdoor insulators ultimately results in the initiation of partial discharge (PD) activity. Because insulation failure and the consequent breakdown of power equipment can occur due to the cumulative adverse effects of partial discharges, it is important to detect PD activity in its early sta…
First-principle study of bismuth-related oxygen-deficient centers ($=$Bi$\cdots$Ge$\equiv$, $=$Bi$\cdots$Si$\equiv$, and $=$Bi$\cdots$Bi$=$ oxygen vacancies) in Bi$_2$O$_3$-GeO$_2$, Bi$_2$O$_3$-SiO$_2$, Bi$_2$O$_3$-Al$_2$O$_3$-GeO$_2$, and Bi$_2$O$_3$-Al$_2$O$_3$-SiO$_2$ hosts is performed. A comparison of calculated…
The aim of this work was to develop a chemical vapour deposition process and understand the growth of sp2 hybridised Boron Nitride (sp2-BN). Thus, the growth on different substrates together with the variation of growth parameters was investigated in details and is presented in the papers included in this thesis. Depo…
A new approach to whole-scale organ engineering is the seeding of stem cells upon a decellularized scaffold of a desired organ. Current efforts seek to use this method for whole-scale organ engineering. Here, we report a novel decellularizationrecellularization approach to engineering a human colonic graft with human…
Helicates are defined as metallo-supramolecular coordination compounds in which linear ligands wrap around several metal ions in a helical fashion.1 The helicate term was introduced by J. M. Lehn in 1987,2 and from that point the chemistry of helicates became a prominent subdiscipline of supramolecular chemistry. Init…
Chirality-transferring events between molecules are important in wide areas of supramolecular chemistry dealing with the design of asymmetric catalysts,1,2 memory devices,3-5 and sensors.6-20 Chirality generates diversity in molecular structures when it interacts with other chiralities to yield two structures with dif…
The well-known discovery of crown ethers1 by Charles Pedersen in the 1960s led to the manifestation of a new eld of molecular recognition, now fundamental to physical organic chemistry. These macrocyclic polyethers (hosts) encircle alkali metal cations (guests) through ion-dipole interactions between the metal ion and…
This PDF file contains the front matter associated with SPIE Proceedings Volume 9276, including the Title Page, Copyright information, Table of Contents, Introduction (if any), and Conference Committee listing.
This paper reports the synthesis and the investigation of the properties and performance of Fe-Al catalysts modified with Cu or Co for the steam reforming of ethanol. The materials were prepared by the precipitation method with different Fe/Al ratios. The samples were characterised by the SBET, TG/DTG, XRD, H2-TPR and…
The growth of aluminum nitride thin films onto various substrates (glass, flexible polyimide, or silicon) and onto different buffer layers (Au, Nb, Cu, Ag, Co, Fe, NiFe, or IrMn) is reported. Samples grown on IrMn, Co, NiFe, Nb, or Au show smooth surfaces. This same smooth quality is observed in samples grown at a low…
Structures based on hydrogenated amorphous silicon (a-Si:H) films deposited on various substrates (including not refractory ones) are widely applied in giant microelectronics devices, such as flat panel displays based on active matrix thin-film transistors and solar cells. The a-Si:H films produced by plasma enhanced…
The continuously increasing complexity of opto-electronic devices and the rising demands of simulation accuracy lead to the need of solving very large systems of linear equations making iterative methods promising and attractive from the computational point of view with respect to direct methods. In particular, iterat…
Tin doped indium oxide (ITO) thin films were prepared on IR glass substrates at different oxygen flow rate by ion-assisted electron beam evaporation method. Properties such as microstructure, morphology, sheet resistance and optical transmittance were investigated by X-ray diffractometer, SEM, four-point probe and UV-…
An investigation about the fabrication of thin single-walled carbon nanotubes (SWCNTs) using Fe 18 clusters as the catalyst precursor by means of mist flow chemical vapor deposition (CVD) has been carried out. The advantage of Fe 18 clusters is the uniform and small particle size. As a result, choosing the acetonitril…
Crystallization kinetics in thin films of Ge2Sb2Te5 doped by Bi and Ti was studied. It has been shown that introduction of these impurities may have an impact on the kinetic parameters of the crystallization process. The possible recording and storage times of devices based on investigated materials were evaluated. It…
We propose approach for modeling thin aluminum film anodization in three dimensions using variation of coupled lattice map on volumetric grid, which is capable of capturing porous and nonporous aluminum oxide growth and electrochemical polishing modes. Model derivation is based on Parkhutik and Shershulsky understandi…