Materials Literature
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Theoretical analysis on cell division control using physical excitations for biocompatible gold nanoparticles in chromosomes is performed. The methods of physical excitations are utilizing ultrasound, electromagnetic waves and X-rays. Due to the mass increase of chromosomes, ultrasound enhances the vibration of chromo…
This paper describes the characteristics of cubic silicon carbide (3C-SiC) films grown on a carbonized Si(100) substrate, using hexamethyldisilane (HMDS, $Si_2(CH_3)_6$ ) as a safe organosilane single precursor in a nonflammable $H_2$ /Ar ( $H_2$ in Ar) mixture carrier gas by atmospheric pressure chemical vapor deposi…
Nanofabrication via directed self‐assembly has emerged as a promising approach for novel functional materials with unique optical, magnetic, and electronic properties. This book chapter reviews recent progress in research on dendrimer‐based hybrid nanofibers as potential template for 1D‐objects in nanotechnology. Emph…
Ultra hard TiN coatings were fabricated by DC and ICP (inductively coupled plasma) magnetron sputtering techniques. The effects of ICP power, ranging from 0 to 300 W, on the coating microstructure, crystallographic, and mechanical properties were systematically investigated with FE-SEM, AFM, HR-XRD and nanoindentation…
Let F be a field and A an (infinite dimensional) vector space over F. A group G of linear transormations of A is said to be finitary linear if for each element g 2 G the centralizer CA(g) has finite codimension over F. Finitary linear groups are natural analogs of FC-groups (i.e. groups with finite conjugacy classes).…
RATIONALE: The unique properties of the PbO-B2O3-SiO2 system, especially its extensive range of glass-forming compositions, make it valuable for various practical applications. The thermodynamic properties and vaporization of PbO-B2O3-SiO2 melts are not well established so far and the data obtained on these will be us…
Strain effect on guided modes and electron transmission through the strained graphene waveguide with oscillating potential are explored theoretically. It is found that the guided mode in the waveguide can be controlled by zigzag or armchair direction strain. The transmission spectrum obtained displays a sharply asymme…
Preparation of nickel (Ni) nanoparticles in the silica gel matrix for various concentrations has been achieved at low temperature. The presence of metallic Ni has been confirmed by x-ray diffraction and further supported by the presence of bright filed transmission electron microscope image, which shows presence of 5…
The synthesis and encapsulation of M+n-octamethylcalix(4)pyridino complexes using acetone and pyridine in H-MCM-41 have been achieved and presented. These hybrid catalysts are characterized by x-ray diffraction, infrared, thermal analysis, Brunauer–Emmett–Teller (BET) surface area, and scanning electron microscopy and…
A diffractive optics design method based on a phase retrieval algorithm and carrier grating coding is modified to enable designing of photonic bandgap reflectances. Discrete and continuous signals are designed for a fiber grating to demonstrate the capability of the approach. The method is proved a versatile tool for…
An experimental technique is presented for fabricating large surface area semitransparent monocrystalline Si solar cells. The semitransparency is achieved by laser-cutting two-dimensional periodic lattices of ellipses through industrially manufactured Si cells. A novel two-level metal base was invented for minimizing…
주사슬에 oligo(oxy ethylene) 팬던트를 갖는 poly(o-hydroxyamides)(PHAs) 공중합체를 저온에서 용액 중축합 반응에 의해서 합성하였다. 이들 공중합 전구체들의 특성은 1H-NMR, FT-IR, DSC, TGA, UTM 그리고 LOI 등을 이용하여 조사하였다. $35^{\circ}C$ 의 DMAc 또는 DMAc/LiCl 용액하에서 측정된 PHAs의 고유점성도는 0.74~1.42 dL/g의 범위를 보였다. 전구체들의 용해도는 oligo(oxy ethylene) 단위의 증가와 함께 증가하였으나, polybenzexazoles(PBOs)는…
Zinc oxide (ZnO) thick film growth on n-GaN using an electrodeposition technique was investigated. Although the reaction temperature is about 70 °C in cathodic electrodeposition, ZnO can grow epitaxially on GaN owing to their small lattice mismatch. However, the quality of grown ZnO is too high for electrons to be sup…
Spinel is a rugged ceramic transparent from ultraviolet to midwave infrared (0.18 – 5.5 μm) wavelengths. It has the best transmission from 4-5 μm among the competing materials ALON and sapphire with comparable mechanical properties. We have developed low absorption loss spinel as an exit window aperture for High Energ…
Abstract Cell opening characteristics dependent on the cell openers for the conventional formulation of a closed-cell polyurethane foam (PUF) was studied using 1-butanol and lithium salt of 12-hydroxystearic acid (Li-12HSA) as the reactive cell opening agents. While cell openining content of only 10.5 % was obtained f…
Chemically converted graphene (CCG), from a chemistry point of view, is a giant molecule with a unique two-dimensional (2D) configuration. The availability of CCG dispersion provides a range of scalable methods to assemble graphene-based materials but brings the challenge of understanding and control of the CCG morpho…
A single-step solid-state synthetic approach was developed for the synthesis of silicon-coated carbon nanotube (CNT) core/shell structures. This was achieved through laser-induced melting and evaporation of CNT-deposited Si substrates using a continuous wavelength CO2 laser. The synthesis location of the CNT/Si struct…
Due to their relative easy synthesis and commercial availability, nanovectors based on dendrimers and dendrons are among the most utilized non‐viral vectors for gene transfer. Concomitantly, recent advances in molecular simulations and computer architectures not only allow for accurate predictions of many structural,…
The studies presented in this report arise from collaborations in the framework of the COST action TD0802. We used both the spin label and the spin probe techniques in order to characterize the dendrimers and their interactions with biomolecules by means of a computer aided analysis of the electron paramagnetic resona…
En In this paper we use the method established by Day [1] to solve Truesdell’s problem rephrased for the torsion of elastic cylinders with microstructure.