Materials Literature
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A lightweight, flexible, and highly efficient energy management strategy is needed for flexible energy-storage devices to meet a rapidly growing demand. Graphene-based flexible supercapacitors are one of the most promising candidates because of their intriguing features. In this report, we describe the use of freestan…
Abstract Review: 155 refs.
Abstract The effect of oxygen‐to‐metal (O/M) ratio on the sintering behavior of plutonium oxide pellets was evaluated from shrinkage measurements in isochronal heating from 973 K to 1923 K and isothermal heating at 1573 K and 1923 K. Air and Ar/H 2 gas for which its P /P ratio was controlled using added moisture (H 2…
We report a simple synthetic method and the unique properties of four types of individual NPs that are well-dispersed in polyelectrolyte complexes (PECs) from the core to the shell without the formation of alloy or core–shell NPs. Additionally, this result cannot be achieved by conventional methods. By mixing and heat…
The formation of specific interaction between poly(3,4-ethylenedioxythiophene) (PEDOT) and adenine (A), cytosine (C) and thymine (T) single stranded homonucleotides has been investigated, complementing our previous investigation on complexes formed by PEDOT and guanine (G) homonucleotide (B. Teixeira-Dias et al, Soft…
Abstract Electrospun poly(ethylene oxide) (PEO)/hydrated iron oxide (HIO)/sodium alginate (SA) composite nanofibers with high ultimate tensile strength of ∼31.6 ± 0.4 MPa and good morphologies, such as smooth surface appearance and average diameter of 159 ± 55 to 475 ± 55 nm, were produced in the range of 50% HIO, wit…
Five iodine boracites, M(3)B(7)O(13)I (M = Mn, Fe, Co, Ni, Cd), have been synthesized by reactions of metal oxide, B(2)O(3), element B, and I(2) at intermediate temperature above 350 °C. Powder X-ray diffraction analyses verify the identities and purity of the products, which are also confirmed by magnetic property me…
Superhydrophobic surfaces in nature exhibit desirable properties including self-cleaning, bacterial resistance, and flight efficiency. However, creating such intricate multi-scale features with conventional fabrication approaches is difficult, expensive, and not scalable. By patterning photoresist on pre-stressed shri…
Rheological properties of living cells play important roles in regulating their various biological functions. Therefore, measuring cell rheology is crucial for not only elucidating the relationship between the cell mechanics and functions, but also mechanical diagnosis of single cells. Atomic force microscopy (AFM) is…
Methods for regulating peptide conformation by non-harmful light stimuli can be useful for remotely controlling cellular functions in vitro. Here, we synthesized a series of p-heteroatom-substituted azobenzenes and studied their photoisomerization properties. The trans-isomer of p-sulfur-substituted azobenzene was eff…
ZnO thin films were prepared by the polymeric precursor method. The films were deposited on silicon substrates using the spin-coating technique, and were annealed at 330 °C for 32 h under pressure-assisted thermal annealing and under ambient pressure. Their structural and optical properties were characterized, and the…
Abstract For the production of polysulfone microcapsules, a process was proposed, which allowed the obtaining of capsules with different wall morphology. A polysulfone solution was projected to a precipitation bath. Three solvents were assessed: N , N ‐dimethylformamide, N , N ‐dimethylacetamide, and N ‐methyl‐2‐pyrro…
Abstract Three 2‐phenyl‐naphth[2,3‐d]oxazole derivatives, one of them being unsubstituted ( 1 ) and the two others bearing a methyl ( 2 ) and a tert ‐butyl group ( 3 ) in the para position of the phenyl ring, were prepared. In the crystalline state, all compounds adopted a crossed‐stacking mode that favors fluorescenc…
Abstract Oxygen chemical diffusion in PuO 2‐ x was investigated in the temperature range of 1473‐1873 K by thermogravimetry as functions of oxygen‐to‐metal (O/M) ratios and temperatures. The oxygen chemical diffusion coefficients, $ \tilde D $ were determined assuming that the reduction curves were dominated by a diff…
The unusually fast crystallization of the organic compound nifedipine has been investigated in detail using different solutions as precursors for the formation of the initial glassy nifedipine films. Starting from these amorphous films the crystallization process was investigated by time-resolved light microscopy at d…
Auf der Grundlage einer quantenchemischen Studie wird CoIIIOOR als zentrale Zwischenstufe in der Titelreaktion vorgeschlagen. Je nach Koordinationsumgebung des CoII sind zwei sehr unterschiedliche Katalysezyklen möglich. Irreversible Katalysatordesaktivierung findet über die Bildung eines inaktiven Dimers statt. Die I…
One dimensional gold nanostructure is one of the most studied colloidal nanostructures due to its unique optical properties and promising applications. Compared with the study of isolated Au nanorods (AuNRs), researches on the controlled assembly of AuNRs in predictable structures and consequent coupling-induced wealt…
Abstract The synthesis of 4‐vinyl‐1,2‐phthalate esters via Suzuki coupling is described, followed by nitroxide‐mediated polymerization to prepare short homopolymers (degree of polymerization [DP] = 10–40, polydispersity index [PDI] = 1.1–1.3). Random copolymers with n ‐butyl acrylate (NBA) were prepared. Copolymers ri…
The crystal chemical origin of nanoscale chessboard/diamond ordering in perovskite-related solid solutions of composition Li 0.5–3 x Nd 0.5+ x TiO 3 (LNT, x ∼ 0.02–0.12) is investigated. Experimental and simulated scanning transmission electron microscopy (STEM) images are found to be consistent with the compositional…
There is an increasing request for zero expansion glass ceramic ZERODUR® substrates being capable of enduring higher operational static loads or accelerations. The integrity of structures such as optical or mechanical elements for satellites surviving rocket launches, filigree lightweight mirrors, wobbling mirrors, an…