Materials Literature
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Abstract In this study, two different nano-structured samples of the FeTi compound were prepared by mechanical alloying and mechanical grinding. For these samples, kinetics of the initial rate of hydrogen absorption, and the equilibrium hydrogen pressure as a function of hydrogen concentration were measured. Mechanica…
A novel LiNH 2 −MgH 2 hydrogen storage system with a molar ratio of 1:1, which can desorb 6.1 wt % hydrogen or 3 equiv of H atoms during first ball milling and subsequent heating, was investigated. During ball milling, the NH 2 group in LiNH 2 and H atoms in MgH 2 switched with each other, leading to the formation of…
Recently, we reported the results of experimental in situ high-energy x-ray diffraction studies of electrostatically levitated equilibrium and supercooled metallic elements and alloy liquids, showing evidence for icosahedral short-range ordering (ISRO). In this paper, these studies are extended to binary Ti-Zr and ter…
Stable fullerene water suspensions (nC(60)) exhibited potent antibacterial activity to physiologically different bacteria in low-salts media over a wide range of exposure conditions. Antibacterial activity was observed in the presence or absence of light or oxygen, and increased with both exposure time and dose. The a…
Abstract Previous papers pointed out the influence of long-term service exposures on the thermal-mechanical behavior of Zr alloys in LOCA conditions and, especially, the impact of in-service hydrogen pick-up on post-quench mechanical properties. Moreover, the oxide layer grown under in-service conditions was occasiona…
Abstract Summary: In situ ATR‐FTIR (attenuated total reflection Fourier transform infrared) spectroscopy combined with a high‐pressure cell has been applied to measure IR spectra of polymers subjected to superheated or near‐critical methanol (100– 200 °C). Spectra of poly(ethylene terephthalate) (PET) have been measur…
Improving superplastic formability of magnesium alloys is a challenging problem. Recently, several attempts at achieving this goal by equal channel angular pressing (ECAP) were undertaken. We show that by using back-pressure, it is possible to reduce the temperature of ECAP of Mg alloy AZ31 thereby producing bimodal g…
The influence of structure characteristics on the ferromagnetism of Ni-doped ZnO (ZnO:Ni) thin films prepared by pulsed laser deposition has been investigated by magnetization and resistivity measurements. Structural and optical absorption analyses revealed that Ni has been incorporated into ZnO lattice as Ni2+ substi…
Over the years, there have been great efforts to try to develop cellulose reactive sizing agents. The assumption in these developments have been that the covalent linkage allows permanent attachmen ...
Ferroelectric domain structures of (001)c, (101)c, and (111)c oriented epitaxial BiFeO3 thin films were studied by using the phase-field approach. Long-range elastic and electrostatic interactions were taken into account. The effects of various types of substrate constraint on the domain morphologies were systematical…
The thermal and electrical tunability of a cholesteric liquid crystal containing a negative dielectric anisotropy liquid crystal in a planar alignment was studied. The physical, optical, and electro-optical characteristics of mixtures containing different ratios of chiral dopant S811 and the negative dielectric anisot…
An investigation of ultrahigh-density ferroelectric data storage based on scanning nonlinear dielectric microscopy (SNDM) is described. To obtain fundamental knowledge of high-density ferroelectric data storage, several studies of nanodomain formation in a congruent lithium tantalate single crystal were conducted. Thi…
Multiferroic ceramics with the general formula (x)MgFe2O4–(1−x)BaTiO3 (x=0.4, 0.5, and 0.6) were synthesized by solid-state sintering process. From the x-ray diffraction analysis, it was observed that almost no chemical reaction occurs between the ferrite and the ferroelectric materials used to form the diphase compos…
Amorphous ZnO granular films were fabricated by anodizing zinc sheet in 0.5M oxalic acid solution under direct current voltage. The photoluminescence spectrum of the as-anodized sample shows a very broad visible emission band, which can be Gaussian divided into two subbands at 525 and 600nm. Based on their annealing b…
Mechanical tissue fractionation can be achieved using successive, high-intensity ultrasound pulses in a process termed histotripsy. Histotripsy has many potential clinical applications where noninvasive tissue removal is desired. The primary mechanism for histotripsy is believed to be cavitation. Using fast-gated imag…
This paper reviews the developments of essential elastic fibers. The elastic fibers include extensible polymer fibers with low or high elasticity and reversibility which consists of the polyurethane elastic fiber, polyester‐ether elastic fiber, polyester elastic fiber, olefin based elastic fiber like XLA, hard elastic…
A single phenomenological expression is proposed to describe thermal transport in a wide variety of nanoscale devices. Size and frequency dependence is studied for some nanosystems from the diffusive to the ballistic regimes. In a single expression we obtain the effective thermal conductivity of cross-plane thin layer…
High quality CdSe quantum dots are synthesized through a room temperature injection technique by using CdAc2 and Na2SeSO3 as precursors. In this synthesis approach, small CdSe clusters are formed after the injection at room temperature. Thereafter, CdSe quantum dots with emissions from the green to the red region can…
OBJECTIVE: Clinical proof of concept for polymer conjugates has already been achieved over the last 30 years, with a family of polymer-protein conjugates reaching the market and an exponentially growing list of polymer-drug conjugates currently in clinical trials. However, many challenges and opportunities still lie a…
The solubility of l- (+)-ascorbic acid in water, ethanol, methanol, propan-2-ol, acetone, acetonitrile, ethyl acetate, and tetrahydrofuran was measured by a gravimetrical method from (293 to 323) K, and the solubility data were correlated against temperature. The solubility of l- (+)-ascorbic acid in water and methano…