Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Toxicological experiments in animals are carried out to determine the type and severity of any potential toxic effect associated with a new lead compound. The collected data are then used to extrapolate the effects on humans and determine initial dose regimens for clinical trials. The underlying assumption is that the…
Continuous and ultrathin platinum (Pt) films were deposited on tungsten (W) adhesion layers using atomic layer deposition (ALD) techniques. Pt ALD films were deposited at 120 °C using MeCpPtMe3 and H2 plasma as the reactants. X-ray reflectivity studies observed the rapid nucleation of the Pt film. X-ray photoelectron…
Lubricant oil derived ash deposits still represent a major issue in diesel particulate filter operation in vehicles. In literature various ash deposition patterns are described. The two boundary deposition patterns are (a) wall layer and (b) filling at the back end of the inlet channels. The patterns are often associa…
This paper presents an analysis of the thermal behavior of a 15-kVA ONAN distribution transformer. Design, performance, and service-life improvements come into view from this study. The mathematical model, conceived as a 3-D solid-oil-environment extended system, considers all modes of heat transfer, including radiati…
We investigated the utility of free-standing graphene as a transparent sample carrier for imaging nanometer-sized objects by means of low-energy electron holography. The sample preparation for obtaining contamination-free graphene as well as the experimental setup and findings are discussed. For incoming electrons wit…
Two largely π-extended thienoacenes with internal thieno[3,2-b]thiophene substructures, i.e., bis[1]benzothieno[2,3-d;2',3'-d']benzo[1,2-b;4,5-b']dithiophene (BBTBDT) and bis(naphtho[2,3-b]thieno)[2,3-d;2',3'-d']benzo[1,2-b;4,5-b']dithiophene (BNTBDT), were synthesized, characterized, and evaluated as an active layer…
Activation of uranyl(V) oxo bonds in the gas phase is demonstrated by reaction of U(16)O(2)(+) with H(2)(18)O to produce U(16)O(18)O(+) and U(18)O(2)(+). In contrast, neptunyl(V) and plutonyl(V) are comparatively inert toward exchange. Computed potential energy profiles (PEPs) reveal a lower yl oxo exchange transition…
Abstract By employing high resolution in-situ STM, the adsorption of alkylimidazolium-based cations of EMI + , PMI + , BMI + and OMI + on Au(111) and Au(100) surfaces are investigated systematically. The cation adsorption on both Au(111) and Au(100) are composed of double rows arising from counter-facing imidazolium-b…
Based on the physical model of amorphous InGaZnO (a-IGZO) thin-film transistors (TFTs) and the extracted density of states described in Part I, a quantitative investigation of mechanisms on the negative bias illumination stress (NBIS)-induced threshold voltageVTinstability of a-IGZO TFTs is presented. It is found that…
BACKGROUND: Stentless aortic bioprostheses were designed to provide enhanced hemodynamic performance and potentially greater longevity. The present report describes the outcomes of patients with the Freestyle stentless bioprosthesis followed for ≤18 years. METHODS AND RESULTS: Between 1993 and 2011, 430 patients under…
Abstract In situ sensing of damage in epoxy embedded separately with carbon nanotubes (CNTs) and carbon black (CB) microparticles is investigated under quasi‐static uniaxial tensile loading. Three different weight fractions of CNTs (0.1, 0.3%, and 0.5%) and one‐weight fraction of CB (10%) are used to generate a conduc…
Purse-string healing is driven by contraction of actin/myosin cables that span cells at wound edges, and it is the predominant mode of closing small round wounds in embryonic and some adult epithelia. Wounds can also heal by cell crawling, and my colleagues and I have shown previously that the presence of unconstraine…
The adsorption probability and reaction behavior of CH x plasma species on various nickel catalyst surfaces is investigated by means of reactive molecular dynamics (MD) simulations using the ReaxFF potential. Such catalysts are used in the reforming of hydrocarbons and in the growth of carbon nanotubes, and further in…
Low-density polyimide (PI)/clay aerogel composites were produced by freeze-drying of a poly(amic acid) ammonium salt/clay precursor suspension, followed by a multistep temperature-programmed imidization. The densities of the resulting aerogel composites were in the range of 0.04–0.09 g·cm –3 . With the increase of PI…
We determine contributions to the structure factor of ambient water (modeled using the TIP4P/2005 potential) from molecules with different local structural environments, distinguished based on a tetrahedral order parameter. The small wavenumber behavior of the partial structure factors indicates the presence of effect…
Macroporous silicon with multiscale texture for reflection suppression and light trapping was achieved through a controllable electrochemical etching process. It was coated with TiO2 by atomic layer deposition, and used as the photoanode in photocatalytic water splitting. A conformal pn-junction was also built-in in o…
The interest in ulvan within a biomedical framework increases as the knowledge of this polysaccharide evolves. Ulvan has been recently proposed as a potential biomaterial, and structures based on this polysaccharide are now being studied for different biomedical applications. In this work, a novel porous structure bas…
AIM: The objective of this work was to study the photoacoustic effect of a special nanoparticle for selective cancer cell killing both in vitro and in vivo. MATERIALS & METHODS: The nanoparticles (NPs) consisting of indocyanine green (ICG), phospholipid-polyethylene glycol (PL-PEG) and folic acid (FA) were used as can…
An aluminum bow-tie nano-antenna is combined with the resonance Raman effect in the deep ultraviolet to dramatically increase the sensitivity of Raman spectra to a small volume of material, such as benzene used here. We further demonstrate gradient-field Raman peaks for several strong infrared modes. We achieve a gain…
Structural plasticity is often required for distinct microscopic steps during enzymatic reaction cycles. Adenylate kinase from Escherichia coli (AK(eco)) populates two major conformations in solution; the open (inactive) and closed (active) state, and the overall turnover rate is inversely proportional to the lifetime…