Materials Literature
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Due to the large porosity and unique framework stability, ZIF-8, a representative zeolitic imidazolate based member of metal-organic framework (MOF) family exhibited excellent adsorption capacities for a wide range of gases, including greenhouse gases. Using in situ FTIR spectroscopy, ZIF-8 framework was investigated…
A model is developed for the mobility of a charge carrier along a conjugated polymer dissolved in solution, as measured by time-resolved microwave conductivity. Each unit cell of the polymer is assigned a torsional degree of freedom, with Brownian dynamics used to include the effects of solvent on the torsions. The ba…
The platinum-supported catalysts have been prepared by ethylene glycol reduction method, and the catalysts were applied to the partial oxidation of ethanol (POE) for hydrogen production. Four types of support, including CNTs, Al2O3, ZrO2, and CeO2, were used on POE catalytic performance test. Prior to catalyst prepara…
Network formation of associative semiflexible fibers and mixtures of fibers and colloidal particles is simulated for the Johnson-Kendall-Roberts model of elastic contacts, and a phase diagram in terms of particle elasticity and surface energy is presented. When fibers self-assemble, they form a network for sufficientl…
In this letter, we present a novel method of fabricating encapsulated resonant gratings. The fabrication method uses selective etching, conformal deposition, conventional lithography, and direct bonding techniques. Our letter includes simulation and experimental results, confirming a strong resonance unique to the TE…
The electrical and thermal parameters of phase change memory (PCM) cells are modified by cycling-induced mechanisms. In this letter, an adaptive cycling procedure is introduced to provide an endurance characterization by keeping the peak temperature at the heater/chalcogenide interface almost constant despite the cell…
We studied the spin-state responses to light impurity substitution in low-spin perovskite LaCoO${}_{3}$ (Co${}^{3+}$: ${d}^{6}$) through magnetization, x-ray fluorescence, and electrical resistivity measurements of single-crystal LaCo${}_{0.99}{M}_{0.01}$O${}_{3}$ ($M$ $=$ Cr, Mn, Fe, Ni). In the magnetization curves…
The use of instruments such as toothbrushes for sampling diatoms from hard surfaces is a potential source of uncertainty in ecological status assessments as diatoms may be inadvertently transferred from one sample to another. The scale of this contamination was investigated by sampling two sites differing in a number…
The application of elaborately designed magnetic catalysts has long been limited to ease their separation from the products only. In this paper, we for the first time employed a magnetic sulphonated poly(styrene-divinylbenzene) resin catalyst on a magnetically stabilized-bed (MSB) reactor to enhance the etherification…
Invisibility devices have attracted considerable attentions in the last decade. In addition to invisibility cloaks, unidirectional invisibility systems such as carpet-like cloaks and parity-time symmetric structures are also inspiring some specific researching interests due to their relatively simplifying design. Howe…
Temperature and magnetic eld dependence of magnetization of EuSSrS multilayers grown epitaxially on KCl (001) substrate is experimentally studied by superconducting magnetometry technique. In these lattice-matched semiconductor heterostructures EuS layers are ferromagnetic quantum wells whereas SrS layers are nonmagne…
Abstract Six new bis(benzimidazolyl) monomers containing ether, sulfonyl and ketone groups were synthesized efficiently. A series of poly( N ‐arylenebenzimidazole)s were prepared using an aromatic nucleophilic displacement reaction that removed the N–H sites from the novel bis(benzimidazolyl) derivatives with activate…
We investigate the mobility of supercooled liquid toluene, ethylbenzene, and benzene near their respective glass transition temperatures (Tg). The permeation rate of Ar, Kr, and Xe through the supercooled liquid created when initially amorphous overlayers are heated above their glass transition temperature is used to…
We present a technique for measuring the interfacial fracture energy, Γi, between a hard thin film and a soft substrate. A periodic array of hard thin islands is fabricated on a soft substrate, which is then subjected to uniaxial tension under an optical microscope. When the applied strain reaches a critical value, de…
Abstract This paper describes the synthesis of phosphorus‐containing polyester‐urethanes and their applications in nanoclay composites and coatings. Polyester was prepared by the reaction of bis(bisphenol‐A) monophenyl phosphonate, maleic anhydride and phthalic anhydride. The polyester was reacted with various diols s…
Raman spectroscopy and differential thermal analysis (DTA) and thermogravimetric analysis have been carried out on Cu-doped KH 2 PO 4 (Cu-KDP). X-ray diffraction powder data reveal that the structure of the KDP crystal does not change with the additive Cu 2+ ion. DTA analysis and Raman study of Cu-KDP as a function of…
There have been many reports on the excellent electrocatalytic properties of carbon nanotubes toward many substrates. Here, we wish to address and investigate the apparent "good promotion" of the electron transfer to cytochrome c as previously shown and attributed to the electrocatalytic properties of carbon nanotubes…
This book tells the fascinating success story of saving the flightless Woodhen of Lord Howe Island. This unique large rail, an iconic and highly endangered Australian bird, was at the very brink of extinction with just 15 individuals found in 1980, when bold and risky actions were taken to save it. The book begins wit…
Here, we demonstrate the decoration of Ni nanoparticles (NPs) on graphene films by simple annealing for p-type doping of graphene. Scanning electron microscopy and atomic force microscopy revealed that high-density, uniformly sized Ni NPs were formed on the graphene films. The density of the Ni NPs increased gradually…
The Fe${}_{1+y}$Te${}_{1\ensuremath{-}x}$Se${}_{x}$ series of materials is one of the prototype families of Fe-based superconductors. To provide further insight into these materials, we present systematic inelastic neutron scattering measurements of the low-energy spin excitations for $x=0.27$, 0.36, 0.40, and 0.49. T…