Materials Literature
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The control of crystal size distribution (CSD) in pharmaceutical crystallization is of primary importance, as downstream processes such as filtration or drying are greatly affected by the properties of the CSD. It is recognized that the variability in the final CSD is mainly caused by the significant uncertainties in…
The experimental characteristics of polarization fatigue in thin-film, bulk ceramic, and single-crystalline ferroelectrics have been reviewed in detail. Various scenarios and models proposed for fatigue in ferroelectric materials during the past few decades have been discussed, together with our own model developed ve…
An interdisciplinary and multianalytical research effort is undertaken to assess the toxic aspects of thoroughly characterized nano- and micrometer-sized particles of oxidized metallic copper and copper(II) oxide in contact with cultivated lung cells, as well as copper release in relevant media. All particles, except…
The possibility of cloaking an object from detection by electromagnetic waves has recently become a topic of considerable interest. The design of a cloak uses transformation optics, in which a conformal coordinate transformation is applied to Maxwell's equations to obtain a spatially distributed set of constitutive pa…
Exchange coupling is observed in the (Nd, Dy)–(Fe, Co)–B/α-Fe films with perpendicular magnetic anisotropy, with a maximum energy product ( BH ) max of 16.2 MGOe and a coercivity i H c of 11.2 kOe. The existence of soft α-Fe in the films is verified by the two-step reversal process at low temperatures and x-ray diffra…
Abstract A new coordination compound, [Mn(CHZ) 3 ][C(NO 2 ) 3 ] 2 , was synthesized and characterized by elemental analysis, IR and UV spectra, and its crystal structure was determined by X‐ray single crystal diffraction. The crystal belongs to the triclinic system and space group $\rm{ P\overline 1 }$ with a =0.88737…
Advanced organic light-emitting diodes (OLEDs), based on a multiple structure, were achieved in combination with a quantum dot (QD) interfacial layer. The authors used core/shell CdSe/ZnS QDs passivated with trioctylphosphine oxide (TOPO) and TOPO-free QDs as interlayers. Multiple-structure OLEDs (MOLEDs) with TOPO-fr…
The pyrolysis characteristics of sawdust and polypropylene are studied using a thermogravimetric analyzer. The experimental results show that the thermal degradation of sawdust can be divided into three stages: dehydration, cellulose or semicellulose decomposition, and the devolatilization of lignin. While the decompo…
Abstract— Exo‐electron emission from MgO thin film was measured by attaching a high‐precision current sensor to the address electrode of the rear plate of an ACPDP test panel. The measured results revealed that the exo‐electron emission currents can vary very sensitively with the type of doping elements used in MgO fi…
In this paper, we construct an effective model for the dynamics of an excluded-volume chain under confinement by extending the formalism of Rouse modes. We make specific predictions about the behavior of the modes for a single polymer confined to a tube. The results are tested against Monte Carlo simulations using the…
The dynamics of the ring-closure reaction of three different bis(thiophen-3-yl)maleimides are investigated using ultrafast spectroscopy in the visible range. The structures of the molecules differ with respect to substitution of the thiophene ring and the maleimide. The experiments reveal reaction kinetics which point…
We report the observation of two-photon-enhanced three-photon absorption (3PA) in transition-metal-doped semiconductor quantum dots (d-QDs) in the near-infrared spectral region. Due to the degeneracy between two-photon transitions to the states of metal ions inside the bandgap and three-photon transitions to the excit…
Noble metals promote the oxidation of carbon nanotubes (CNTs) at the relatively low temperature of 350 °C. The reduction potential of multiwalled CNTs is located between those of W and Ni, while that of single-walled CNTs is between those of Ni and In. Nanometer-sized patterns on CNT films were successfully fabricated…
Nickel-chelating lipids have been synthesized for use as functionalized templates for 2-D crystallization of membrane proteins. These monolayer-forming lipids have been designed with three distinct components: (i) a branched hydrocarbon tail to confer fluidity of the monolayer, (ii) a perfluorinated central core for d…
Scratch resistance of engineering polymers has become increasingly important for diverse industrial applications as scratches may greatly reduce the life cycle of the components. In this article, a new polymer surface treatment method has been introduced to enhance scratch resistance to a single-pass scratching action…
Abstract Three different stoichiometric forms of Rb x Mn[Fe(CN) 6 ] y · z H 2 O [ x = 0.96, y = 0.98, z = 0.75 ( 1 ); x = 0.94, y = 0.88, z = 2.17 ( 2 ); x = 0.61, y = 0.86, z = 2.71 ( 3 )] Prussian blue analogues were synthesized and investigated by magnetic, calorimetric, Raman spectroscopic, X‐ray diffraction, and…
Abstract We have examined the electronic and geometrical effects of the progressive addition of bulky electron‐withdrawing NO 2 groups at the adjacent meso positions of Fe III ‐μ‐oxo octaethylporphyrin dimers. The successive addition of mono‐, di‐, tri‐, and tetranitro substituents at the meso positions increases the…
Abstract This paper reports the synthesis and characterization of boron‐ and nitrogen‐modified carbon cryogel (CC) ammonia borane (AB) nanocomposites (BNCC‐AB) for hydrogen storage. Resorcinol–formaldehyde (RF) derived CCs were modified by homogeneous dispersion of AB in RF hydrogel prior to pyrolysis. Nanocomposites…
A cost-effective, high-throughput method for generating gold nanowires and/or nanorods based on a multisegment template electrodeposition approach is described. Using this method, multiple nanowires/nanorods can be generated from a single pore of alumina template membranes by alternately depositing segments of desirab…
Abstract A new method for the tuning and enhancing photoluminescence (PL) characteristics of light emitting poly (3‐methylthiopnehe) (P3MT) nanotubes through E‐beam irradiation under atmospheric environments is reported. An E‐beam generated from a linear electron accelerator (1 MeV, 1.6 × 10 13 –8.0 × 10 16 electrons…