Materials Literature
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The corrosion performance of epoxy-coated steel meeting the requirements of ASTM A775 with the coating in an undamaged condition and two damaged conditions (0.04% and 0.83% damaged area) is evaluated in accordance with Annexes A1 and A2 of ASTM 955 and compared with the corrosion performance of conventional reinforcin…
Adsorption behavior of proteins at polyelectrolyte brush was investigated by employing optical waveguide (OWG) spectroscopy. For the present study, polystyrene (PS) macromolecule was synthesized by anionic polymerization and characterized by gel permeation chromatography (GPC). The PS was terminated by trichlorosilane…
A novel and simple approach to fabricating nano-structured titanium oxide films (TOFs) by various concentration of KOH aqueous solution was investigated and the effect factor to processing is discussed based on wet corrosion process. The obtained TOFs were applied for the electrode for bio-sensing devices, which can d…
현재의 PEMFC(Polymer electrolyte membrane fuel cell, 고분자 전해질 연료전지)의 성능 평가는 장시간의 활성화(activation) 후에 측정된 Ⅰ-Ⅴ curve에 의해 결정된다. 그러나 이 방법은 정해진 시간에 많은 샘플을 평가하기에는 부적합하다. 이를 개선하기 위하여 본 연구에서는 screen tool을 이용하여 단시간에 활성화 후 성능을 측정하고 기존 방법과 비교하였다. Screen tool을 이용한 활성화 방법은 5.13 ㎠ MEA를 사용하여 PEMFC의 두 전극(anode, cathode)의 쇼트상태에서 cathode 측…
This paper evaluates thermodynamic and economic characteristics of a newly proposed gas turbine (GT) repowering system (RPS) together with those of a conventional GT RPS (S-C). A steam turbine (ST) power generation system (PGS), that uses the steam produced at an HRSG by utilizing exhaust gas from a medium scale MCFC…
The microstructure of electrode were characterized by plate-like agglomerates. It becomes more sphere-like porous structure while the current passed. The evidence was presented the effect of current passage on the microstructure and morphology of the LSM electrode in solid oxide fuel cells. Such a structural change in…
In order to improve the performance of the dye-sensitized solar cells based on ZnO films, ZnO nanoparticles of different size and morphology were prepared by hydrothermal and solvothermal synthesis methods. Electrodes applied to dye-sensitized solar cell were prepared by the screen-printing method. The effects of ZnO…
Ni / Al 2 O 3 / Al film was fabricated for a high performance capacitor using electrochemical etching, anodizing, and electroless-plating. The focus of this study was to form seamless and void-free Ni electrodes on Al2O3/Al with etched tunnels. The conventional deposition method of metal was limited to full-fill for t…
A CTE gap between a silicon chip and a package substrate is one of the most critical issues in securing reliability for a high-density packaging. We succeeded in a development of a new thermally stable and ultra low CTE polyimide film . The CTE is lower than that of silicon in a wide temperature range. A thick laminat…
The authors experimentally demonstrate a resonant hybridization between the magnetic dipole structural resonance in the permeability of a fishnet metamaterial and an electric dipole material resonance in the permittivity of the dielectric spacer layer. The hybrid resonances in the permeability and the negative index r…
In this paper we studied the effects of fiber length on mechanical properties of injection-molded bamboo/PBS composites. We carried out tensile test and Izod tests for evaluating the mechanical properties of bamboo/PBS composites. The fiber length of the composites consisted of the range from -75㎛, +75㎛ to -180㎛, +180…
The electronic structure and the magnetic properties of the molecule-based ferromagnets Cu[C(CN) 3 ] 2 and Mn[C(CN) 3 ] 2 are studied according to first principles within density-functional theory (DFT) and the full potential linearized augmented plane wave (FP-LAPW) method. The total energy, atomic spin magnetic mome…
During FY 2010, five studies were conducted of technology families’ applicability to various fuel cycle strategies to fill in knowledge gaps in option space and to better understand trends and patterns. Here, a “technology family” is considered to be defined by a type of reactor and by selection of which actinides pro…
Sandia National Laboratories has developed a vehicle-scale demonstration hydrogen storage system as part of a Work for Others project funded by General Motors. This Demonstration System was developed based on the properties and characteristics of sodium alanates which are complex metal hydrides. The technology resulti…
This document is a compilation of fabrication and characterization data for the compact lot A3-H08, which was produced for possible insertion into the second ATR Graphite Creep irradiation test capsule (AGC-2). The compacts were produced by Oak Ridge National Laboratory (ORNL) for the Advanced Gas Reactor Fuel Develop…
Composite materials with coupling between ferromagnetic and ferroelectric orders provides an unique technique of switching electric polarization using magnetic field and magnetic polarization in presence of electric field. BaTiO₃+MgFe₂O₄ material system was synthesized by hybrid chemical process using chlorides and ni…
It was found that several problems exist in the implementation of GB 7544-2004 in the aspects of requirements of natural latex materials and safety of rubber condom products, microorganisms to be controlled and the packaging and label. As a result, the suggestions were put forward.
This paper discusses the development of a Raman spectrometer incorporated into a MEMS device for use in environmental monitoring against chemical and biological agents. The current design incorporates a 1525 nm laser diode as an optical pump source, and a tunable Fabry-Perot interferometer as the wavelength selection…
Abstract Gas phase standard state (298.15 K, 1 atm) structures, enthalpies of formation, and ionization energies (IEs) were calculated at the G4MP2 composite method level of theory for the parent and binary mixed carbon, silicon, nitrogen, and phosphorus cubane derivatives. Increasing nitrogen content increases the en…
We have investigated the photoluminescence (PL) of a porous silicon film in which a typical nematic liquid crystal 4-pentyl-4’-cyanobiphenyl infiltrated. Before the liquid crystal filtration, the PL spectrum of the porous silicon film is comprised of two luminescent bands, one of which is located at about 600 nm where…