Materials Literature
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The development and application of nanoparticles as in vivo delivery vehicles for therapeutic and/or diagnostic agents has seen a drastic growth over the last decades. Novel imaging techniques allow real-time in vivo study of nanoparticle accumulation kinetics at the level of the cell and targeted tissue. Successful i…
Historically, treatment of patients with cancer using chemotherapeutic agents has been associated with debilitating and systemic toxicities, poor bioavailability, and unfavorable pharmacokinetics. Nanotechnology-based drug delivery systems, on the other hand, can specifically target cancer cells while avoiding their h…
Abstract Copper‐oxide compound semiconductors provide a unique possibility to tune the optical and electronic properties from insulating to metallic conduction, from bandgap energies of 2.1 eV to the infrared at 1.40 eV, i.e., right into the middle of the efficiency maximum for solar‐cell applications. Three distinctl…
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTWater-Soluble Conjugated Polymers for Imaging, Diagnosis, and TherapyChunlei Zhu, Libing Liu, Qiong Yang, Fengting Lv, and Shu Wang*View Author Information Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Ac…
Securing our energy future is the most important problem that humanity faces in this century. Burning fossil fuels is not sustainable, and wide use of renewable energy sources will require a drastically increased ability to store electrical energy. In the move toward an electrical economy, chemical (batteries) and cap…
A two-dimensional honeycomb lattice harbours a pair of inequivalent valleys in the k-space electronic structure, in the vicinities of the vertices of a hexagonal Brillouin zone, K±. It is particularly appealing to exploit this emergent degree of freedom of charge carriers, in what is termed 'valleytronics'. The physic…
Abstract pH sensitive dodecyl‐modified poly(allylamine)s associate with superoxide dismutase (SOD) in aqueous solutions at pH 5.5 and 7.4. The bound SOD can be released completely at pH 10.0 due to the self‐aggregation of the polymers. In a mixture of water and organic solvent, the hydrophobic groups of the polymers a…
In recent years, there has been growing interest in developing high performance silane containing epoxy coatings. In this work, two silane monomers (3-glycidoxypropyltrimethoxysilane and vinyltrimethoxy silane) were incorporated in epoxy coatings. The results demonstrated that the incorporation of 5 wt-% 3-glycidoxypr…
Uninsulated overhead distribution cables are evaluated in terms of their propagation and radiation behavior when excited by a partial-discharge (PD) pulse. Low attenuation levels at high frequency and a traveling-wave radiation pattern are observed for a single aluminum cable. The dominant radiated frequency component…
The present research involves the study of the direct reaction of methanol with silicon in the presence of copper as a catalyst. This reaction was performed in a static form system and the reacting CH3OH vapor could be brought into contact with the Si-catalyst mixture fixed as a bed in the reaction tube at reaction te…
Four kinds of Pb-Mg-Al alloys with Al contents of 0, 5, 10, and 15% (mass fraction) were prepared by induction melting. The corrosion behaviors of these four alloys were investigated by electrochemical measurements and immersion tests. The results indicate that Mg, Mg17Al12, and Mg2Pb phases in Pb-Mg-Al alloys form a…
We demonstrate that increasing the hydrophobic environment around the charge center of a polyelectrolyte (PE) not only decreases the water content of an adsorbed PE layer but can even dewater up to ~50% of an initially hydrated substrate. The results of this work are expected to yield new stratagies to dewater PE syst…
The corrosion resistance of Type 304LN (UNS S30453) stainless steel containing nitrogen compositions of 0.132 wt%, 0.193 wt%, and 0.406 wt% in nitric acid (HNO3) and chloride medium is investigated in the paper. Increasing the nitrogen content in the steel showed no deleterious effect on corrosion resistance in HNO3.…
The phase equilibria of the glycine–KCl–NaCl–H 2 O system were determined in the concentrations up to 3.33 mol·kg –1 over the temperature range from 283.2 to 363.2 K using a dynamic method. A rigorous chemical model for the glycine–KCl–NaCl–H 2 O system was established by the Pitzer model with the help of an OLI platf…
Six new ion-pair metal-bis(dithiolene) complexes with the formulas [C 9 H 14 N 4 ][Cu(mnt) 2 ] (1a ), [C 10 H 16 N 4 ][Cu(mnt) 2 ] ( 1b ), [C 11 H 18 N 4 ][Cu(mnt) 2 ] ( 1c ), [C 12 H 20 N 4 ][Cu(mnt) 2 ] ( 1d ), [C 13 H 22 N 4 ][Cu(mnt) 2 ] ( 1e ), and [C 14 H 24 N 4 ][Cu(mnt) 2 ] ( 1f ) have been synthesized startin…
The electron-hole asymmetry has been measured in highly oriented pyrolitic graphite using magneto-optical absorption measurements. A splitting is observed for transitions at both the $K$ point and the $H$ point of the Brillouin zone of graphite where the effect of trigonal warping vanishes. This result is fully consis…
We propose an electrically tunable liquid crystal (LC) grating unit consisting of a conventional homogeneous LC cell and an LC grating with spatially varied twisted-nematic (TN) orientation domains (-π to π). The former cell controls the Stokes parameter S 3 and the latter functions as a TN-LC grating that is highly s…
Electronic factors essential for NO activation by Cu(I) sites in zeolites are investigated within spin-resolved analysis of electron transfer channels (natural orbitals for chemical valence). NOCV analysis is performed for three DFT-optimized models of Cu(I)–NO site in ZSM-5: [CuNO]+, (T1)CuNO, and (M7)CuNO. NO as a n…
Abstract Thin films of GeTe, Ge 2 Sb 2 Te 5 and Sb 2 Te 3 have been synthesized from their respective polycrystalline bulk by thermal evaporation. X‐ray diffraction study of the films confirms the amorphous nature of GeTe and Ge 2 Sb 2 Te 5 films, but as‐deposited Sb 2 Te 3 film was in the crystalline form. Structural…
Abstract The present work is devoted to the study of the Zr 4+ /Ti 4 substitution in the K 1/2 Bi 1/2 Ti (1– x ) Zr x O 3 solid solution ( x = 0.0 to x = 1.0), based upon the K 1/2 Bi 1/2 TiO 3 (KBT) ferroelectric compound. The tetragonal distortion of KBT is suppressed by this substitution and leads to the cubic comp…