Materials Literature
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Reversibly cross-linked core-shell-corona micelles based on a triblock copolymer composed of poly(aliphatic ester), polyphosphoester, and poly(ethylene glycol) are reported. The triblock copolymer is synthesized through consecutive ring-opening polymerization of ε-caprolactone and 2,4-dinitrophenylthioethyl ethylene p…
Transparent, biodegradable, mechanically robust, and surface-patterned silk films were evaluated for the effect of surface morphology on human corneal fibroblast (hCF) cell proliferation, orientation, and ECM deposition and alignment. A series of dimensionally different surface groove patterns were prepared from optic…
Abstract Three amphiphilic block copolymers are employed to form polymeric micelles and function as nanocarriers to disperse hydrophobic aggregation‐induced emission (AIE) dyes, 1,1,2,3,4,5‐hexaphenylsilole (HPS) and/or bis(4‐( N ‐(1‐naphthyl) phenylamino)‐phenyl)fumaronitrile (NPAFN), into aqueous solution for biolog…
The pulp and paper industry in Canada is developing technology for the production and use of nanocrystalline cellulose (NCC). A key component of the developmental work is an assessment of potential environmental risks. Towards this goal, NCC samples as well as carboxyl methyl cellulose (CMC), a surrogate of the parent…
Abstract A clear correlation between defect‐related emissions and the magnetization of ZnO nanorods synthesized by a one‐step aqueous chemical method is demonstrated. The relative contribution of the emission bands arising from various types of defects is determined and found to be linked with the size of the nanorods…
Platinum(II) and phosphine MM3 force field parameters are derived from fits to the ground state potential energy surface at the level of Kohn-Sham density functional theory with employment of the B3LYP exchange-correlation functional. The parametrization includes bond stretch, angle bend, and torsional parameters for…
Microtubular solid oxide fuel cells (MT-SOFCs) are interesting for portable and auxiliary power units energy production systems, due to their extremely fast startup time. However, a single cell provides power in the range of 1 W, thus the number of microtubes to reach a kW scale is relevant and packaging design issues…
We have investigated the nature of the superconducting ground state of ${\text{Cu}}_{0.06}{\text{TiSe}}_{2}$ using muon spin rotation and muon spin relaxation measurements. The temperature dependence of the magnetic penetration depth of ${\text{Cu}}_{0.06}{\text{TiSe}}_{2}$ is consistent with a single gap $s$-wave BCS…
In this study, diamond films have been synthesized on adamantane-coated (100) Si substrates at 530 °C by microwave plasma chemical vapor deposition from a gaseous mixture of methane and hydrogen. Scanning electron microscopy, Raman spectroscopy, and X-ray diffraction were employed to characterize the carbon chemical s…
In this work, we propose a highly parallelizable sampling scheme designed for atomistic simulations of glassy materials in the vicinity of the glass-transition temperature T g, based on the idea of inherent structures (IS). Glassy dynamics is envisioned as a combination of two types of motions: (a) an “in basin” vibra…
The aim of the present study was to assess the anti-fertility activity of ethanolic extracts of Tabernaemontana divaricata (TD) leaves in oestrogenic activity models in immature female rats. Mature green leaves of TD were collected and authenticated. Extractions of the dried leaves were carried out with ethanol in a S…
A Comment on the Letter by Georg H. Enevoldsen et al., Phys. Rev. Lett. 102, 136103 (2009). The authors of the Letter offer a Reply.Received 14 October 2009DOI:https://doi.org/10.1103/PhysRevLett.104.119603©2010 American Physical Society
In this study, we report the use of a phosphatase to catalyze the formation of nanospheres from a hydrophobic compound (Ada-GFFY-OMe, 2) via a unique mechanism. The nanospheres were stable in aqueous solutions for two weeks. Their size could be controlled by both concentrations of the precursor (Ada-GFFY(p)-OMe, 1) an…
We report on steady-state and time (ns to fs regime) resolved studies of H-bonding interactions and proton-transfer reaction dynamics of silica-based mesoporous material MCM-41 with an H-bond donor and acceptor guest aromatic molecule (7-hydroxyquinoline, 7HQ). We observed the ground state reaction which leads to the…
Using coordinate transformation stated earlier by Pendry et al. [Science 312, 1780 (2006)], we investigate the two-dimensional elliptical electromagnetic superscatterer and superabsorber, based on the concept of complementary media. Such an elliptical electromagnetic superscatterer (or superabsorber) is realized by co…
The coupling of the plasmon spectra of graphene and a nearby thick plasma is examined here in detail. The coupled modes include linear plasmons.
The analysis of the phase distribution induced by the programming operation in phase-change memory (PCM) is fundamental to understand PCM functionality and multilevel capabilities. In this letter, the crystalline-phase distribution induced in an amorphous cell by the set operation is investigated at the array level. A…
NMR parameters of (73)Ge and (17)O in vitreous GeO(2) and quartz GeO(2), including the isotropic shifts, the quadrupole coupling constants C(Q), and the electric-field-gradient asymmetry parameters η, are determined through density functional calculations. Clear correlations are established between (73)Ge shifts and t…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTPhotopatternable Films of Block Copolymers Prepared through Double-Click Reaction†Jan Stadermann‡, Michael Erber‡, Hartmut Komber‡, Josef Brandt‡, Klaus-Jochen Eichhorn‡, Martin Bönsch§, Michael Mertig§, and Brigitte Voit*‡View Auth…
Octithiophene sterically segregated by annelation with bicyclo[2.2.2]octene (BCO) units was synthesized to study the unimolecular properties of longer oligothiophene dications. For the preparation of such longer oligomers, a new route for the synthesis of the monomer annelated with BCO unit at the 3,4-positions of thi…