Materials Literature
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Spherical hafnia nanoparticles have been prepared by laser ablation. The particle size has been shown to decrease with increasing incident laser intensity. X-ray diffraction and transmission electron microscopy data demonstrate that incident intensities above 5 × 10 9 W/m 2 ensure the formation of the high-temperature…
Potassium titanate fibers were synthesized using titaniumdioxide and K2CO3 as starting materials with Kneading-Drying-Calcination method. The reaction mechanism for the formation of K2Ti4O9 was investigated by TG-DSC, XRD and SEM with different TiO2/K2CO3 molar ratios. The results show that the TiO2/K2CO3 molar ratios…
This paper examines structural changes produced in crystalline LiF by high-power femtosecond laser pulses and provides some insight into the mechanisms of structural damage to the material. In the region of the onset of multiple femtosecond laser beam filamentation and in the central part of the filaments, we observed…
Nitrate-containing amphiphilic block copolymer chains were self-assembled into micellar nanostructures as a reservoir for the slow-release delivery of nitric oxide (NO). Poly(oligo(ethylene glycol) methyl ether methacrylate)-block-poly(vinyl benzyl chloride-co-styrene) was prepared by reversible addition fragmentation…
We have determined the growth charge composition and low thermal gradient (< 1°C/cm) Czochralski pulling parameters for the growth of bulk homogeneous Yb 3+ -doped NaBi(MoO 4 ) 2 crystals and assessed the main spectroscopic characteristics of the Yb 3+ :NaBi(MoO 4 ) 2 crystals as laser materials.
Soft materials, such as polymers and fibers, are key industries in Japan and play a significant role in our daily lives [1 T. Yano, Polymer 21, 4702–4708 (2012).[Crossref], [Web of Science ®] , [Google Scholar]–3 Y. Shinohara, Macromolecules 43, 9480–9487 (2010).[Crossref], [Web of Science ®] , [Google Scholar]]. Thes…
Soil dispersion induces soil erosion and colloidal leaching. Nutrients are lost at the same time and this causes water contamination. Phosphate is an essential element for living organisms. Because phosphate influences soil dispersion and it is an important limited resource, this influence must be evaluated well in or…
We have examined the effect of preparation conditions on the structure and piezoelectric characteristics of ceramic samples in the form of thin piezoelectric disks cut from large sintered (1 − x )BiScO 3 - x PbTiO 3 ( x = 0.635–0.645) bodies. The use of chemical coprecipitation from nitrate solutions allowed us to pre…
Buddleja salviifolia leaves are used for the treatment of eye infections and neurodegenerative conditions in South Africa. Three phenolic compounds identified as 4′-hydroxyphenyl ethyl vanillate (1), acteoside (2) and quercetin (3) from leaf extracts of the B. salviifolia were investigated for cyclooxygenase-2 (COX-2)…
Triple stimuli (temperature/pH/photo)-responsive amphiphilic glycopolymer, poly(2-(dimethylamino)ethyl methacrylate-co-6-O-methacryloyl-1,2,3,4-di-O-isopropylidene-D-galactopyranose)-b-poly(4-(4-methoxyphenylazo)phenoxy methacrylate) [P(DMAEMA-co-MAIpGP)-b-PMAZO] was synthesized by atom transfer radical polymerization…
The previously developed theory of sensor response is validated by detailed comparison with experiment. For this purpose, new experiments are performed to investigate the sensitivity of semiconductor tin dioxide (SnO 2 ) nanostructured thin films with average nanoparticle diameter ≈120 nm as a function of temperature…
We review the intermediate coupling model for treating electronic correlations in the cuprates. Spectral signatures of the intermediate coupling scenario are identified and used to adduce that the cuprates fall in the intermediate rather than the weak or the strong coupling limits. A robust, ‘beyond local-density appr…
A conventional waterflood often leads to unsuccessful recovery of oil, as most of the injected water tends to channel into the more permeable zones. Pickering emulsions stabilized using surfactant and colloidal particles, such as nanoparticles, are gaining wider recognition in the petroleum industry due to their bette…
The diverse properties of rare earth elements have seen broad and growing applications in clean energy technologies, hybrid vehicles, pollution control, optics, refrigeration, and so on. This study presents a “cradle-to-gate” life cycle assessment of the energy use, resource depletion, and global warming potential res…
We prepared nanoporous carbon (NC) particles of approximately 50-nm diameter by direct carbonization of metal–organic frameworks (MOFs). The obtained MOF-derived NC (MOF-NC) particles exhibit very high biocompatibility and, hence, are promising as intracellular drug delivery carriers.
Verification technologies based upon electromagnetics and acoustics could potentially play an important role in fulfilling the challenging requirements of future verification regimes. For example, researchers at the Pacific Northwest National Laboratory (PNNL) have demonstrated that low frequency EM signatures of seal…
Three compounds with the general formula YbM 3 II Fe5O12 (MII = Mg, Ca, Sr) have been prepared for the first time by high-temperature solid-state reactions between ytterbium(III) oxide, iron(III) oxide, and alkaline-earth carbonates. Their crystal class and unit-cell parameters have been determined by X-ray diffractio…
We have studied the kinetics of terbium oxide chemical vapor deposition using the Tb(dpm) 3 complex. At substrate temperatures in the range 465–560°C, films ranging in thickness from 25 to 360 nm have been obtained. At precursor partial pressures below 13 Pa in an argon atmosphere, the films had smooth surfaces with s…
Alfred Werner received the Nobel Prize in 1913 for his pioneering work in developing coordination theory for metal complexes. A crucial experiment leading to the widespread acceptance of Werner's theory involved the resolution of a set of chiral cobalt complexes, specifically cis-[Co(en)2(NH3)X]X2 (X˭Cl, Br). The kine…
II–VI and IV–VI semiconductor films for solar cell applications, namely, CdTe, CdS, CdSe, PbS, PbSe and PbTe, can be prepared in a two-stage deposition process. In this work we illustrate the two-stage process to obtain PbTe and CdSe films from precursor oxide or hydroxide films deposited by chemical bath deposition (…