Materials Literature
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This review briefly surveys, with an emphasis on the author’s works, porous monoliths tailored by liquid-phase synthesis. Porous structures ranging from mesopore to macropore regions are induced in sol–gel polymerizing systems, which yield various porous materials such as inorganic oxides, organic–inorganic hybrids, c…
Two-terminal devices were fabricated using unintentionally doped Zinc Oxide (ZnO) nanowires (NW) grown via a chemical vapor deposition technique to study the influence of surface functionalization on their transport properties. Organic molecules with differing functional groups demonstrated contrasting effects on the…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation C. C. H. Lo; Effects of copper precipitation on the magnetic properties of aged copper-containing…
The surface of corn stalk was modified by silane coupling agent KH-560 to improve corn stalk surface properties. The contact angle of the different probe liquid was determined by angle meter, from which the surface wettability of corn stalk was calculated and then the surface free energy deduced, crystallinities and c…
An electromagnetic cloak based on a coordinate transformation approach is always inhomogeneous and anisotropic. In this paper, we investigate the sensitiveness of different cloaking schemes, when EM parameters are limited to a range more plausible to realize. Numerical experiments show that the imperfect cloak under m…
This paper synthesizes information on the properties of Shape Memory Alloys (SMAs) and its useful aspect towards utilization in civil engineering structures. A basic description of their highly non-linear material behavior in terms of shape memory effect, superelasticity, martensite damping and variable stiffness is p…
We report the development of a defect-engineered thermoelectric material using Si1−xGex alloys grown on a c-plane sapphire substrate via electron beam (E-beam) irradiation. This paper outlines the idea of growing the Si1−xGex film at relatively high temperatures to obtain good crystalline properties, then controlling…
Preparation of size-controlled gold nanoparticles is required for their use in applications. Electroless growth of gold nanoparticles using Au seeds with mean diameter of 12.5 nm and hydroquinone was performed and the growth process was analyzed. The pH dependencies of the redox potentials of hydroquinone and Au(III)…
The optimization problem for tensioning conditions in a rotating circular saw under a thermal load is solved by a genetic algorithm. The governing equations for the in-plane behavior due to rotation, thermal load by friction, and plastic strain by tensioning and those for the resulting out-of-plane behavior are presen…
MCM‐48 type support materials synthesized by the direct hydrothermal synthesis (HTS) and room temperature synthesis (RTS) methods were incorporated with tungstophosphoric acid (TPA) in the range of 10–40 wt% by using a wet impregnation technique in methanol solutions. Resulting HPA‐MCM‐48 catalysts were characterized…
A dual-phase steel was electrodeposited with Cu prior to reduction annealing in order to improve coating quality and resultant corrosion characteristics of the galvanized material. This pre-eletrodeposition process allowed a tenfold reduction in coating defects (typically found in uncoated areas and empty pores), ther…
This paper is a review of our research on the plasma electrolytic oxidation (PEO) process of tantalum in 12-tungstosilicic acid. For the characterization of microdischarges during PEO, real-time imaging and optical emission spectroscopy (OES) were used. The surface morphology, chemical and phase composition of oxide c…
Correcting and quickly predicting the shrink mold shape in the sport shoe industry for direct injection-expanded foam molding manufacturing procedures are critical. Traditional methods rely on the engineer to guess the initial shrink mold shape when manufacturing the actual shrink mold and shoe sole product. The artif…
A study on the corrosion behavior of a series of experimental high-chromium (18.53–30.48 wt.%), high-carbon (3.82–5.17%) cast irons in NaCl-KCl (1 : 1 M) at 670°C has been evaluated by using weight loss technique and compared with a 304-type stainless steel. It was found that all castings had a higher corrosion rate t…
A facile sol–gel-based method for the formation of monolithic polysilsesquioxane glasses from acid-catalyzed organotrimethoxysilane–water binary mixtures, free from alcohols and organic solvents, has been developed.
We succeeded in development of a thick laminate polyimide sheet composed by ultra low CTE polyimide films which showed low CTE comparable to that of silicon. A key issue in realizing a reliable through-hole interconnection in the package substrate is a CTE gap in Z-direction between an ultra low CTE polyimide sheet (1…
The resonance frequencies and stability of a nanobeam in a longitudinal magnetic field are investigated. To this aim, a three dimensional beam model is used in which the small-scale effect is taken into account based on the nonlocal elasticity theory. The Lorentz forces are obtained in terms of the local elastic rotat…
The dependences of phase stability and solid state phase transitions on the crystallite size in ZrO2-10, 12 and 14 mol% Sc2O3 nanopowders are investigated by X-ray powder diffraction using a synchrotron source (S-XPD). The average crystallite sizes lie within the range of 35 to 100 nm, approximately. At room temperatu…
Individual WS(2) nanotubes (NTs) were bended and released in-situ inside a transmission electron microscope. Kinks appeared in the NTs suddenly during the bending process. Shell distortion, shell breaking and rotation of broken shells were observed in these kinks. Spontaneous self-healing and focused electron beam-ass…
The results of infrared reflectivity measurements for the iron-based high-temperature superconductor Ba(Fe0.9Co0.1)2As2 are reported. The reflectivity is found to be close to unity at frequencies ω lower than 2Δ/h (2Δ is the superconducting gap and h is Planck’s constant). This is evidence for the s +/− or s +/+ symme…