Materials Literature
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The multi-scale microstructure of a lotus leaf is rendered non-wetting by micro-protrusions and nano-hairs present on its surface. The mechanical properties of the surface become important since the water droplet has to be supported on the micro-protrusions without wetting the surface. Current work correlates the non-…
This work was motivated by ostensibly contradictory results from different groups regarding the effect of pressure on the fragility of glycerol. We present new experimental data for an intermediate pressure regime showing that the fragility increases with pressure up to about 1.8 GPa, becoming invariant at higher pres…
The aim of this work was to estimate the biodegradation of a co-extruded starch/poly(lactic acid) polymeric material using a vermiculite based inert solid medium which could simulate compost medium and enable us to achieve complete carbon balances. At the end of the test the mineralisation rate was compared to those o…
A technique to quantify in real time the microstructural changes occurring during mechanical nanoscale fatigue of ultrathin surface coatings has been developed. Cyclic nanoscale loading, with amplitudes less than 100 nm, is achieved with a mechanical probe miniaturized to fit inside a transmission electron microscope…
We present an experimental study regarding the effects of the $\ensuremath{\gamma}$ radiation on silica glass doped with Ge up to $10\text{ }000$ ppm molar produced by the sol-gel technique. We have determined the irradiation-induced changes in the refractive index $(\ensuremath{\Delta}n)$ as a function of the oxygen…
Abstract New challenges and opportunities for polyolefin blends arise from the recent introduction of olefin block copolymers (OBCs). In this study, the effect of chain blockiness on the miscibility and phase behavior of ethylene‐octene (EO) copolymer blends was studied. Binary blends of two statistical copolymers (EO…
Abstract The syntheses, structures, and magnetic properties of the trinuclear triangular compounds [{Cu II L 1 } 2 Cu II (H 2 O) 2 ](ClO 4 ) 2 · H 2 O ( 1 ) and [{Cu II L 1 } 2 M II (H 2 O) 2 ](ClO 4 ) 2 {M = Ni ( 2 ), Co ( 3 ), Fe ( 4 )} derived from N , N ′‐ethylenebis(3‐methoxysalicylaldimine) (H 2 L 1 ) are descri…
The present study was designed to investigate the effect of hesperidin on rat adjuvant arthritis (AA) and to elucidate the involvement of synoviocytes in this process. Freund's complete adjuvant was used to induce AA in rats. Secondary paw swelling and the index of immune organs of AA rats were measured. Macrophage-li…
The presence of a macroscopic phase separation between the superconducting and magnetic phases in CaFe1-xCoxAsF is demonstrated by muon spin rotation measurements conducted across their phase boundaries (x=0.05-0.15). The magnetic phase tends to retain the high transition temperature (Tm>Tc), while Co doping induces s…
Two new dendronized nonlinear optical (NLO) polyfluorenes were synthesized with high azo-chromophore loading density by the introduction of high generation chromophore dendrons on the side chains. Thanks to the advantages of Sharpless’ click chemistry reaction, the dendrons were conveniently bonded to the backbone of…
Designed prototype molecules for making a three-terminal single-molecule device, star-shaped Fe(II), Co(II), and Ru(II) tris-bipyridine complexes containing three dithienylcyclopentenes, have been synthesized and characterized. All complexes displayed reversible photochromic behavior when irradiated with UV or visible…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectromechanics of Monodomain Chiral Smectic C Elastomer: Mechanical Response to Electric StimulationKazuyuki Hiraoka*†, Manami Kobayasi†, Ryugo Kazama†, and Heino Finkelmann‡View Author Information† Center for Nano Science and Technology, Department of Life Science & Susta…
Abstract Syntheses, structures and magnetic properties of a heterobridged μ‐phenoxido‐μ 1,1 ‐NCO dinickel(II) compound [Ni II 2 (HL) 3 (μ‐NCO)] · 2H 2 O ( 1 ) and a heterobridged bis(μ 3 ‐phenoxido)bis(μ 3 ‐alkoxido)tetranickel(II) system, [Ni II 4 (L) 2 (HL) 2 (SeCN) 2 (H 2 O) 2 ] · C 3 H 7 NO · 4H 2 O ( 2 ), contain…
Low-area density ZnO nanowire arrays, growing perpendicularly to the substrate, are synthesized with high-pressure pulsed laser deposition. The introduction of a ZnO buffer layer enables us to fabricate individual nanowires several micrometres apart (area density<0.1 nanowire microm(-2)), suppressing any shadowing eff…
A composite semiconductor electrode with the structure “ n -Si/ p -CuI/ITO/ n-i-p a-Si/ n-p GaP/ITO/RuO 2 ” was fabricated for the purpose of achieving efficient solar water splitting. The electrode showed a stable photoanodic current due to oxygen evolution with a large negative photoshift ( V p ) of about 2.2 V from…
The 3,4-dihydroxyphenyl-l-alanine (Dopa)-containing proteins of mussel byssus play a critical role in wet adhesion and have inspired versatile new synthetic strategies for adhesives and coatings. Apparently, however, not all mussel adhesive proteins are beholden to Dopa chemistry. The cDNA-deduced sequence of Pvfp-1,…
We provide detailed description and characterization of specifics of the imprinting technique for fabrication of large-area and high-efficiency liquid crystal polymer polarization gratings. We show that the quality of polarization gratings imprinted with linear polarized light is as high as that of gratings obtained i…
Homogeneous catalysis by transition metal complexes is challenging to model with electronic structure theory. This is due to the large system sizes encountered, the wide range of bonding motifs, and the need for accurate treatments of reaction kinetics. Range-separated hybrid density functionals have been shown to acc…
Silicon nanoparticles with strong blue photoluminescence were synthesized by electrochemical etching of silicon wafers and ultrasonically removed under N(2) atmosphere in organic solvents to produce colloids. Thermal treatment leads to the formation of colloidal Si particles of 3 ± 1 nm diameter, which upon excitation…
In this paper, novel processable aromatic polymers with imide rings and attached as side-chain azobenzene units are presented. Polymers differ in the chemical structures of chromophores and polymer backbones. Azopolymers were obtained by a two-step synthetic approach. This includes the preparation of a precursor poly(…