Materials Literature
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For some specific biomedical applications, connected with in-situ measurements of the absorbed dose of ultraviolet (UV) light, we have developed materials, sensitive to the light emission with a wavelength up to 320nm. Thermoluminescence (TL) yield of Gd 2 O 3 , doped with Eu and Li has been analysed with respect to t…
Single-crystal strontium titanate (SrTiO3) dense spheres have been synthesized via a solvothermal reaction route with monoethanolamine as reaction medium solvent. The as-synthesized SrTiO3 products were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution…
We reported a highly efficient and low-cost way to synthesize silver nanosphere dimers on a poly(dimethylsiloxane) (PDMS) sheet by using a stepwise upright assembly method for the “hot spots” study of surface-enhanced Raman scattering (SERS). The first silver nanoparticle (NP) layer is almost entirely embedded in PDMS…
Hydrogen influences many properties of diamond films, such as invoking negative electron affinity, inducing increased electron emission from diamond thermionic emitters. However, the thermionic emission diminishes at temperatures exceeding 750 °C. In this work, we observed the isothermal thermionic emission decrease f…
We demonstrate that spherical gold nanoparticles of relatively narrow size distribution (250 nm size, 40 nm standard deviation) and gold microclusters (composed by smaller nanoparticles of 30–100 nm in size) can be obtained from in situ nucleation of Au25− molecules in polyimide at temperatures from 150 °C to 450 °C.…
Abstract This work introduces facile synthetic methods of two new classes of green materials based on graphene (G) and the macrocyclic polyoxometalate [H 7 P 8 W 48 O 184 ] 33– (P 8 W 48 ) alone or assembled with an imidazolium‐based poly(ionic liquid) (PIL). The polyoxometalate serves as both an efficient graphite ox…
High-resistive Zn0.95Mn0.05O and weak p-type nonpolar-oriented Zn0.94Mn0.05Na0.01O thins films were grown on quartz by pulsed laser deposition. Both samples exhibit room temperature ferromagnetism while with Mn-Na codoping, the saturation magnetic moment is greatly enhanced. It is revealed that the doped Mn impurities…
In this Letter, we investigated the photo-response of multi wall carbon nanotube-based composites obtained from in situ thermal evaporation of noble metals (Au, Ag, and Cu) on the nanotube films. The metal deposition process produced discrete nanoparticles on the nanotube outer walls. The nanoparticle-carbon nanotube…
With the continuing aggressive scaling of interconnect dimensions and introduction of lower k materials, back-end-of-line (BEOL) dielectric time-dependent dielectric breakdown (TDDB) reliability margin is greatly reduced. In this paper, a comprehensive investigation on abnormal low-k TDDB characteristics, a systematic…
Abstract Statistical approaches including Taguchi design of experiments (DOE), analysis of variance (ANOVA), and multiple linear regression analysis were employed to determine optimum processing conditions for successful preparation of a thermoplastic vulcanizate nanocomposite (TPVNC) based on thermoplastic polyuretha…
Polyelectrolyte multilayer films are a versatile functionalization method of surfaces and rely on the alternated adsorption of oppositely charged species. Among such species, charged dyes can also be alternated with oppositely charged polymers, which is challenging from a fundamental point of view, because polyelectro…
A strong site preference of intrinsic cation vacancies in Mn-doped Ga2O3 with a defective spinel structure is revealed using a combination of high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and first-principles calculations. The intensity profile analysis of HAADF-STEM images clear…
An equation of state (EOS) is a thermodynamic equation describing the state of matter under a given set of physical conditions, and the Mie-Grüneisen EOS is a widely used EOS for solid materials. Polyimide is a typical complex high-molecular polymer of imide monomers which is widely used in the manufacture of parts fo…
Scanning tunneling microscopy is used to study the edge orientation of graphene fabricated by thermal decomposition of 6H-SiC. The exploration on the atomically resolved structures and the patterns in reciprocal space demonstrates that the armchair direction is always parallel to the basic vector of 6 × 6 reconstructi…
Charge transport within films of several new types of electropolymerized porphyrin and porphyrin-fullerene dyad polymers was studied in order to obtain information on the suitability of these organic semiconductors for applications in solar energy conversion, sensor devices, etc. The films, prepared by electropolymeri…
We report herein the first evidence that an F-actin solution shows shear banding, which is characterized by the spontaneous separation of homogeneous shear flow into two macroscopic domains of different definite shear rates. The constant shear stress observed in the F-actin solution is explained by the banded flow wit…
Corrosion of buried steel pipe is a permanent engineering problem and, albeit the counter measures against degradation, when the corrosion process takes place, the damage has costly impact. In order to study the corrosion behavior of pipelines, it is possible to use actual soil extracts or simulated soil solutions. Th…
PVP capped platinum nano particles (PNP) of 5 nm diameter were prepared and characterized as homogeneous and of spherical nature. At physiological pH range (6.0-8.0), these PNP catalyze the deoxygenation of phenoxazine group containing resazurin (1) by hydrazine. The observed rate constants (k(o)), increase linearly w…
The nonlinear magnetoelectric (ME) transient responses and the frequency-multiplying behavior of a circular-shaped magnetoelectric layered structure are investigated by using a 2D nonlinear mechanical–magnetic coupling constitutive relation. The general analytical expressions for the ME coefficient in T – T and C – T…
Thin carbon nanotube films have great potential for transparent electrodes for solar cells and displays. One advantage for using carbon nanotubes is the potential for solution processing. However, research has not been done to connect solution rheological properties with the corresponding film characteristics. Here we…