Materials Literature
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We investigated the photothermal excitation of a mechanical resonator consisting of a carbon nanotube cantilever. Higher mode oscillations were successfully measured resulting from the elimination of parasitic vibrations. Based on a simple lumped model for the photothermally excited carbon nanotube cantilever, the the…
Conformational changes are essential for protein-protein and protein-ligand recognition. Here we probed changes in the structure of the protein ubiquitin at low temperatures in supercooled water using NMR spectroscopy. We demonstrate that ubiquitin is well folded down to 263 K, although slight rearrangements in the hy…
PURPOSE: The high breast density is one of the biggest risk factors for breast cancer. Identifying patient having persistent high breast density is important for breast cancer screening and prevention. In this work the authors propose for the first time an x-ray phase-shifts-based method of breast density measurement.…
Abstract Poly(vinyl laurate) (PVL) and poly(vinyl stearate) (PVS) were synthesized by means of cobalt‐mediated radical polymerization (CMRP). Cobalt(II) diacetylacetonate (Co(acac)2) was demonstrated to control the radical polymerization of these monomers in solution. Molecular weights up to 15,000 g·mol−1 were obtain…
The use of matured compost as an inoculation agent to improve the composting of vegetable and fruit wastes in a laboratory-scale composter was evaluated, and the commercial feasibility of this approach in a pilot-scale (1.8 x 10(4) L) composter was subsequently confirmed. The effect of aeration rate on the physico-che…
In sheet metal forming industries, finite element simulations are commonly used for the process/tool design. An important factor for finite element modeling is mechanical property (flow stress curves and stress–strain relationships) of the sheet material. Hydroforming bulge and uniaxial tensile tests were performed on…
Phase transitions induced by hydrostatic and uniaxial compression of Si are examined using a density functional--based metadynamics method. A metastable Cmcm structure is predicted to form under hydrostatic compression at 300 K in the pressure range near 20 GPa. Enthalpy calculations indicate that this new phase of Si…
A scheme is presented in which an organic solvent environment in combination with surfactants is used to confine a natively unfolded protein inside an inverse microemulsion droplet. This type of confinement allows a study that provides unique insight into the dynamic structure of an unfolded, flexible protein which is…
Multiadditions of heteroaddends to C(60) are achieved via the oxazolination reaction of 1,4-(PhCH(2))(2)C(60) with OH(-) and PhCN, which exhibit a unique regioselectivity regarding the addition sites of the heteroatoms.
We have investigated bipolaron formation in the Holstein-Hubbard and the Fr\"ohlich-Hubbard model on a discrete one-dimensional lattice. Phonon enriched basis has been generated by exploiting the idea of the Lang-Firsov transformation, which results in better convergence in the strong coupling regime. The incorporatio…
Bone repair or regeneration is a common and complicated clinical problem in orthopedic surgery. The importance of natural polymers, such as microcrystalline chitosan, and minerals such as HAp and β-TCP, has grown significantly over the last two decades due to their renewable and biodegradable source, increasing the kn…
Nanocomposite coatings can endow a plated surface with various properties such as wear resistance, high-temperature corrosion protection, oxidation resistance, and self-lubrication. This work studies the corrosion and corrosive wear resistance of electroplated nickel nanocomposite coatings on Ti-6Al-4V alloy in a Hank…
Ferromagnetic hexagonal cobalt nanoparticles are synthesised via reduction of cobalt acetate tetrahydrate by using sodium borohydride as a reducing agent. The morphology, crystal structure and magnetic properties of as synthesised particles are characterised by using transmission electron microscopy (TEM), powder X-ra…
High-resolution transmission microscopy has been used to reveal the defect processes occurring during shot peening of a high-strength titanium aluminide alloy with a nearly lamellar microstructure. Deformation is characterised by intensive dislocation glide and mechanical twinning, involving all potential slip systems…
The incidence of an inhomogeneous plane wave on the interface between two lossy media is analyzed. The analytical expressions of the incidence angle of the phase vector, for which the transmitted wave has the phase or the attenuation vector parallel to the interface, are obtained. The transmitted wave with the attenua…
Electroless nickel–boron samples with 5 wt % boron were synthesized on mild steel with a bath based on sodium borohydride. Evolution of chemistry in the bath was followed during plating. Most reactive was consumed during the first half hour of the process. However, reducing agent and stabilizer concentration evolve di…
Electrochemically formed thin films are vital for a broad range of applications in virtually every field of modern science and technology. Understanding the film formation process could provide a means to aid the characterisation and control of film properties. Herein, we present a fundamental approach that combines t…
Placement error due to charging in electron beam lithography has been identified as the most important factor limiting placement accuracy in EBL, which is especially important in the fabrication of masks for double patterning. Published results from a few major companies demonstrated that the placement errors due to c…
Propagating two-dimensional plasmon polariton modes guided by elliptical cross section silver nanoridges are investigated in this paper. Mode field profiles, dispersion curves, propagation distances, and figure-of-merits of the plasmon modes are calculated for various elliptical cross section silver nanoridges. It is…
EUV lithography is the most promising candidate for semiconductor device manufacturing of 1x nm half pitch and beyond. For the practical use, EUV mask with a thin absorber could be adopted because of less shadowing effect. EUV reflectivity from the thin absorber is about 1~3%. It would cause CD change on wafer especia…