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。
The equilibrium phase behavior of 43 linear poly(isoprene- b -styrene- b -ethylene oxide) (ISO) triblock copolymer melts, with molecular weights that place these materials near the order−disorder transition, is reported. Ordered phase morphologies were characterized using small-angle X-ray scattering, transmission ele…
This study demonstrates a novel approach toward development of advanced chemical sensors based on chemically functionalized single-walled carbon nanotubes (SWNTs). SWNTs with covalently attached poly( m -aminobenzene sulfonic acid), SWNT-PABS, have shown improved sensor performance for detection of NH 3 . Compared to…
We apply the recently developed plasmon hybridization method to a solid nanosphere interacting with a metallic surface. We show that the plasmon energies of the nanoparticle exhibit strong shifts with nanoparticle−surface separation. Depending on the energy of the surface plasmon, nanoparticle plasmons can either red…
Luminescence properties of highly <100>-oriented Y 2 O 3 :Tb 3+ whiskers obtained by chemical vapor deposition on Si substrate have been investigated over a wide temperature range for different dopant concentrations. A considerable thermally stimulated increase of the green Tb 3+ emission intensity was found in the te…
The leakage current in ferroelectric thin films is one of the most pertinent issues for their application in microelectronics. We argue that the leakage current in ferroelectric films at low electric field can arise from interband tunneling as opposed to Fowler–Nordheim tunneling at high electric field. We substantiat…
The piezoelectric properties of sodium bismuth tantalate Na 0.5 Bi 2.5 Ta 2 O 9 (NBTa) dense ceramics were determined using 0.1 wt% Mn-doped samples. The ferroelectric properties of the NBTa ceramics were confirmed. The remanent polarization P r and coercive field E c were 15.5 µC/cm 2 and 81.5 kV/cm at room temperatu…
Supercritical carbon dioxide (scCO2) annealing enhances the hydrophobicity of the surfaces of asymmetric perfluorinated block copolymers. X-ray photoelectron spectroscopy (XPS) and contact angle measurement reveal that the surface domains of the fluorinated block (PF) of poly[styrene-block-4-(perfluorooctylpropyloxy)s…
In this paper an oxygen sensor based on Ga 2 O 3 films was analyzed. We propose a sensor using a Pt–Ga 2 O 3 –Pt structure with a bottom Pt layer electrode and a mesh type Pt electrode atop the Ga 2 O 3 film. Ga 2 O 3 films were prepared by rf magnetron sputtering from a powder target using Ar as the sputtering gas. A…
High birefringence and low viscosity nematic liquid crystal single compounds and mixtures were developed and their properties evaluated. The UV stability of the single isothiocyanianes liquid crystal compounds was studied by different methods. Excellent UV durability of some of the single high birefringence isothiocya…
Polymer surface layers comprised of mixed chains grafted to a functionalized silicon surface with a total layer thickness of only 1-3 nm are shown to exhibit reversible switching of their structure. Carboxylic acid-terminated polystyrene (PS) and poly (butyl acrylate) (PBA) were chemically attached to a silicon surfac…
Influence of Growth Mode of Carbon Nanotubes on Physical Properties for Multiwalled Carbon Nanotube Films Grown by Catalystic Chemical Vapor Deposition, Horibe, Masahiro, Nihei, Mizuhisa, Kondo, Daiyu, Kawabata, Akio, Awano, Yuji
The deposition of diamond-like carbon (DLC) films at subatmospheric pressure has been achieved by the nanopulse plasma chemical vapor deposition (CVD) method. To realize this process, a high ion density and non-arcing plasma at subatmospheric pressure are required. A static induction (SI) thyristor with an inductive e…
Ferromagnetic Zn 1- x Cu x O (ZnO:Cu) films were epitaxially grown on n-GaN(0001)/Al 2 O 3 (0001) by radio-frequency magnetron sputtering at a substrate temperature as low as 700°C. X-ray diffraction θ-2θ scans, φ-scans, and surface morphology studies revealed the degree of crystallinity, epitaxiality, and grain size.…
A reflective-type polymer-stabilized cholesteric liquid crystal (PSCLC) cell was demonstrated at λ=1550 nm laser wavelength. It showed a high attenuation range (∼30 dB), a low operating voltage (∼12 V rms ), a highly efficient polarization-independent behavior and flat wavelength dependence in the range of 1525–1575 n…
Abstract The nonisothermal cold‐crystallization kinetics and subsequent melting behavior of poly(trimethylene terephthalate) (PTT) were investigated with differential scanning calorimetry. The Avrami, Tobin, and Ozawa equations were applied to describe the kinetics of the crystallization process. Both the Avrami and T…
The structural determinants of the unusually low pK(a) values of Cys282 in human creatine kinase and Cys232 in alpha1-antitrypsin were studied computationally. We have demonstrated that hydrogen bonding to the cysteine residue is the prime determinant for both proteins. In the case of creatine kinase, the hydrogen bon…
Highly textured Ca-doped (ZnO) m In 2 O 3 ( m is an integer) ceramics were fabricated by the reactive templated grain growth (RTGG) method and their thermoelectric properties were examined. Platelike ZnSO 4 ·3Zn(OH) 2 particles were used as reactive templates and mixed with In 2 O 3 and CaCO 3 powders into a stack of…
Mesoporous semimetal bismuth film and magnetic metal nickel and cobalt thin films have been electrodeposited from hexagonal or lamellar structured lyotropic liquid crystalline phases with polyoxyethylene surfactant. The liquid crystalline templates are characterized by low-angle X-ray diffraction (XRD) and polarized-l…
Strain-induced band gap shifts that depend strongly on the chiral angle have been observed by optical spectroscopy in single-walled carbon nanotubes (SWCNTs). Uniaxial and torsional strains are generated by changing the environment surrounding the SWCNTs, using the surrounding D2O ice temperature or the hydration stat…
Abstract Plasticized polysaccharide coatings on polypropylene (PP) film were prepared to evaluate the optical and tensile properties of the resulting coated films, as affected by biopolymer and plasticizer types, in order to develop a novel film structure of biopolymer coatings on common plastics intended for food pac…