Materials Literature
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Angled nano-scale tunnels with high aspect ratio were fabricated on poly(methyl methacrylate) (PMMA) using a focused ion beam (FIB). The fabrication parameters such as ion fluence, incidence angle, and acceleration voltage of the Ga(+) ion beam were first studied on the PMMA surface to explore the formation of the nan…
Polycrystalline Fe doped NiO was prepared by the solid state method with the aim of exploring its suitability as a functional material for spintronics applications. Phase pure samples (up to 2% doping of Fe) as evident from x-ray diffraction were characterized to investigate the magnetic, electric and dielectric prope…
Interdot Coulomb interactions and collective Coulomb blockade were theoretically argued to be a newly important topic, and experimentally identified in semiconductor quantum dots, formed in the gate confined two-dimensional electron gas system. Developments of cluster science and colloidal synthesis accelerated the st…
An ultra-sensitive digital imaging system was employed to visualize oxidative stress in intact L. minor plants exposed to Cd, Cu, menadione, AAPH, and ascorbate in real time. The increase of ROS production was assessed by measuring the rate of fluorescence intensity increases of the test medium supplemented with a flu…
Abstract The results are presented for the chemical characterization carried out with 53 raw material samples with phyllosilicates from outcrops located between the provinces of Almería and Granada (SE Spain) in order to use them as waterproof layers under the floors of greenhouses. For this purpose, the samples have…
A tight-binding model Hamiltonian is newly parametrized for silicon carbide based on fits to a database of energy points calculated within the density functional theory approach of the electronic energy surfaces of nanoclusters and the total energy of bulk 3C and 2H polytypes at different densities. This TB model incl…
Proximity effects causing thickening and bending of closely spaced, free-standing pillars grown by electron-beam-induced deposition are investigated. It is shown that growth of a new pillar induces deposition of a layer of additional material on the side of already grown pillars facing the new pillar. We present exper…
A mechanical design technique for optical coatings that simultaneously controls thermal deformation and optical reflectivity is reported. The method requires measurement of the refractive index and thermal stress of single films prior to the design. Atomic layer deposition was used for deposition because of the high r…
Carbon nanotube applications in advanced devices often require reproducible control of the placement of individual single-walled carbon nanotubes (SWNT). Directed assembly using self-assembled monolayer (SAM) patterns provides a possible solution where hydrophilic and hydrophobic surfaces are created to attract and/or…
One-dimensional (1-D) nanomaterials are basic building blocks for the construction of nanoscale devices. However, the fabrication and alignment of 1-D nanomaterials with specific geometry and composition on a given substrate is a significant challenge. Herein we show a successful example of fabricating a family of ali…
Abstract Hybrid materials of conducting polyaniline (PANi) and multiwalled carbon nanotubes (CNTs) were synthesized using an in situ polymerization method. The resulting CNTs with a thin layer of PANi coating were further compounded with polypropylene to produce electrically conductive composite material. The PANi coa…
Abstract BACKGROUND: Second‐order nonlinear optical (NLO) films have been made using electric field poling polymer and Langmuir–Blodgett techniques with non‐centrosymmetric structures that exhibit relatively high values of nonlinear susceptibility (χ 2 ), but the shortcomings of insufficient temporal or mechanical sta…
The capability to manipulate proteins/peptide fragments at liquid-solid interfaces has led to tremendous applications in detectors and biotechnology. Therefore, understanding the detailed molecular behavior of proteins and peptides tethered on a hard material surface is an interesting and important topic. The inhomoge…
Amorphous carbon (a-C:H) is widely used as a hardmask in semiconductor device manufacturing to enable patterning of sub-65nm features. Key criteria for a good hardmask include the ability to transfer patterns into underlayers with tightest dimension control. In order to achieve this goal, the hardmask film must posses…
Adsorptions of nine tripeptides GXG, ranging from negatively (D) and positively (K) charged, to hydrophilic (N and S), and to hydrophobic (G, V, F, W, and Y) residues, on the two cluster models (C(54)H(18) and C(54)) of (10,0) single-walled carbon nanotubes (SWCNTs) are systemically investigated with the MPWB1K and MP…
The fabrication of porous silicon photonic structures using lightly doped, p-type, silicon wafers (resistivity: 14–22 Ω cm) by pulsed anodic etching is reported. The optical properties have been found to be strongly dependent on the duty cycle and frequency of the applied current. All the interfaces of the single laye…
Soil burial tests were carried out to evaluate the effect of biodegradation on the mechanical properties (tensile, flexural, and impact) and the mass loss of OPT fiber-filled RPP composites, as compared to control samples (virgin PP and RPP without filler). The composite samples were prepared using 30% w/w of OPT fill…
Here we report the preparation of crystallized lanthanide phosphate (LnPO 4 ) nanostructures at room temperature on solid substrates by the layer-by-layer adsorption and reaction method comprising repetitive adsorption of lanthanide ions and subsequent reaction with phosphate ions. Taking the fabrication of LaPO 4, fo…
Abstract This study deals with the radio‐frequency plasma treatment of polycarbonate surfaces with argon. The wettability of polycarbonate was examined by static contact angle measurements with polar solvents (deionized water and formamide) and a nonpolar solvent (diiodomethane). The surface free energy of the polycar…
ZnO powders were prepared via the solid‐state reaction at 800°C in air, nitrogen, and hydrogen atmospheres, respectively. Raman spectra show that the concentration of oxygen vacancies greatly increases when the sample is prepared in hydrogen atmosphere. The particle size distributions of the powders prepared in air an…