Materials Literature
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The first application of N,N -diallylglycidylamine (DAGA) as a monomer for anionic ring-opening polymerization is presented. The monomer is obtained in a one-step procedure using epichlorohydrin and N,N -diallylamine. Both random and block copolymers consisting of poly(ethylene glycol) and poly( N,N -diallylglycidylam…
ZnTe/CdSe core/shell nanocrystals with varying ZnTe core sizes and CdSe shell thickness have been synthesized. The absorption onset and photoluminescence (PL) wavelengths vary from the mid-visible to the near-infrared range. The conduction and valence band energies as well as bandgap and electron–hole overlap are accu…
Fabricating ZnO nanorod arrays with precisely controlled morphology, alignment, and density is highly desirable but rather challenging. On the other hand, understanding the parameters that affect their final morphology and the growth mechanisms is significant to integrate such patterned ZnO nanorod arrays in various a…
Poly(lactic acid) (PLA) was blended with chitosan (CS) to fabricate electrospun aligned PLA-CS nanofibers. These prepared nanofibers were aligned using a novel collector made of parallel blades which is designed to increase the transversal electric field across the gap. SEM images show that the fiber diameter mostly r…
The perovskite-like layer structured praseodymium titanate (Pr2Ti2O7; PTO) is a good candidate for high temperature piezoelectric application because of its high Curie point. Single phase, dense, textured PTO ceramic was prepared by spark plasma sintering using a two-step method for the first time. The Lotgering orien…
We report a facile approach to the conjugation of protein-encapsulated gold fluorescent nanoclusters to the iron oxide nanoparticles through catechol reaction. This method eliminates the use of chemical linkers and can be readily extended to the conjugation of biological molecules and other nanomaterials onto nanopart…
Crystallization of butyl paraben from water–ethanol mixtures has been investigated. The liquid–liquid phase separation and the solid–liquid solubility have been determined from 1 to 50 °C. Cooling crystallizations have been performed at different starting compositions, and the processes have been recorded by in-situ i…
I consider a simple model of a three-band superconductor with repulsive interband interactions. The frustration, associated with the odd number of bands, leads to the possible existence of an intrinsically complex time reversal symmetry breaking order parameter. In such state the fluctuations of the different gaps are…
Edge effect is known to hinder spreading of a sessile drop. However, the underlying thermodynamic mechanisms responsible for the edge effect still is not well-understood. In this study, a free energy model has been developed to investigate the energetic state of drops on a single pillar (from upright frustum to invert…
A method is herein proposed to produce biodegradable microcapsules by a self-healing of porous microspheres, which were prepared from water-in-oil-in-water (W 1 /O/W 2 ) double-emulsion templates. Methoxypoly(ethylene glycol)- b -poly- dl -lactide (PELA) was dissolved in ethyl acetate (EA) as the oil phase (O) of doub…
This Article describes the synthesis and characterization of renewable self-adhesive coatings with tunable viscoelastic properties and equipped with well-defined amounts of carboxylic acid "sticker" groups with adhesion promoting characteristics. Hydroxyl-ended polyesters with various architectures (linear, branched)…
We review structural aspects of the Bechgaard and Fabre salts in relationship with their electronic, magnetic and superconducting properties. We emphasize the role of bond and charge modulations of the quarter filled organic stack in the various instabilities and ground states exhibited by these salts. A special consi…
Micro‐Raman studies of oxygen‐deficient gray‐colored NaNbO3 single crystals have shown that at room temperature both antiferroelectric P and ferroelectric Q phases are present simultaneously as separate regions tens of micrometers in size. Phase transitions in P and Q regions have been elucidated by dielectric, dilato…
A Comment on the Letter by Jung-Hoon Lee et al., Phys. Rev. Lett. 107, 117201 (2011). The authors of the Letter offer a Reply.Received 10 October 2011DOI:https://doi.org/10.1103/PhysRevLett.108.219701© 2012 American Physical Society
Many applications require a low-cost and large-scale mode of flexible electronics with reasonably high photoresponse that can be detected without high precision measurement systems. We demonstrate a very easy to fabricate ZnO UV sensor, made on common pencil drawn circuit over a paper. ZnO nanocrystals were extracted…
One-dimensional nanotubes (NTs) that consist of multiple metallic components are promising platforms for potential applications, whereas only a few synthetic methods of multimetallic NTs have been reported to date. In the present work, we developed a general synthesis route for the production of uniform multicomponent…
We systematically investigate the diffusion and separation behavior of hydrogen and methane in covalent organic frameworks (COFs) and Li-doped counterparts. The results indicate that the self-diffusivities of hydrogen and methane in COFs decrease monotonically with the increase of pressure. Interestingly, after Li dop…
Using femtosecond laser pulses, coherent GHz acoustic phonons are efficiently photogenerated and photodetected in BiFeO3 (BFO) multiferroic single crystal. Due to the crystal lattice symmetry, longitudinal as well as two transverse acoustic modes are generated and detected, and the corresponding sound velocities are d…
High quality In2O3 single crystals of bcc structure were grown by chemical vapour transport. The temperature dependence of resistivity, Hall constant, and mobility yielded an electron density of n = 1.3 × 1019 cm−3. The transport properties showed characteristics best describable by the degenerate semiconductor model.…
The role of the amino group twisting ability in the BODIPY photophysics for nonsterically hindered and constrained molecular structures was studied. When a coplanar disposition of the amino and the BODIPY core is feasible, a hemicyanine-like delocalized π-system gives rise to novel blue and efficient BODIPY laser dyes…