Materials Literature
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The goal of this study was to evaluate the radial mechanical property of the small-diameter polyurethane vascular grafts reinforced by weft-knitted tubular polyester/spandex fabrics. The polyester/spandex tubular fabrics with different blend ratios were prepared on a weft-knitting machine to reinforce small-diameter p…
Spatial and temporal controlled delivery of growth factors which contribute to efficient repair upon tissue injury or failure remains a major challenge in tissue engineering. In this paper, we evaluated polyelectrolyte multilayer microcapsules to control spatiotemporal release of transforming growth factor-β1 (TGF-β1)…
Abstract This paper compares the species richnesses, Bray–Curtis similarities, species diversities, evennesses, and the results of various analyses (multivariate, logarithmic series, and lognormal distribution analyses) of insects from four orders (viz., Hemiptera, Orthoptera, aculeate Hymenoptera, and Coleoptera) inh…
Aluminium-derivatized submicron-in-size silica spheres (Al-MSS), with controllable morphology, particle size, mesoporosity, and incorporation of an active phase at the internal surface, have been prepared by a one-step synthesis-functionalization method in view of potential applications in the liquid phase. Four Al-MS…
A facile one-pot synthesis for preparing thermosensitive, luminescent gold nanodots with diameters of 1–2 nm is presented. The influence of the alkyl chain length of the surface ligands (alkyl thiols) on the optical properties of the gold nanodots was investigated. The synthesized gold nanodots show strong thermosensi…
Hyperbolic metamaterials in which the dielectric component exhibits critical opalescence have been considered. It appears that fluctuations of the effective refractive index in these materials are strongly enhanced and so 'virtual electromagnetic black holes' may appear as a result of these fluctuations. Therefore, th…
Lichtspiele: Lichteinstrahlung verursacht drastische Änderungen der Form stabförmiger Polymere mit Azobenzol-Photochromen in der Hauptkette. Die eingebetteten Photoschalter wirken als molekulare Scharniere, die bei lichtinduzierter Isomerisierung zur reversiblen Schrumpfung und Streckung des Polymerrückgrats führen (s…
Abstract Functionalization of the bis‐lacunary Keggin polyoxotungstate [γ‐SiW 10 O 36 ] 8– has been achieved with a two‐step synthesis, by the covalent attachment of a 3‐aminopropylsilane spacer and further linkage of the dansyl (5‐dimethylamino‐1‐naphthalenesulfonyl‐) residue. The resulting bis‐decorated molecular hy…
Glasklare Analyse: Die atomare Struktur eines metallgestützten glasartigen dünnen Silikafilms wurde durch Tieftemperaturrastertunnelmikroskopie (STM) aufgelöst. Anhand des STM-Bildes wurde ein Modell entworfen, mit dessen Hilfe die atomare Struktur des dünnen Silikatglases im Detail ausgewertet werden konnte. Die Gesa…
In this study, a novel Sr-based bulk metallic glass (BMG) with nominal composition of Sr40 Mg20 Zn15 Yb20 Cu5 (at.%) was fabricated with high-purity raw materials by induction-melting method. Its mechanical properties, corrosion behavior, and cellular compatibility were studied in vitro as a feasibility evaluation of…
Many trace chemical analyses are being transitioned from the lab to the field, among which is surface‐enhanced Raman spectroscopy. Although initial portable Raman analyzers primarily employ 785 nm laser excitation, recent studies suggest longer wavelengths, with an appropriate surface‐enhanced Raman‐active substrate,…
A new convergent synthesis for polyurethane dendrons to generation 4, and dendrimers to generation 3, is presented with control of surface functionality. The systematic synthesis of twenty-six new dendritic materials has led to a study of the factors affecting Tg using widely accepted approaches. The established under…
A Suzuki coupling strategy has been employed to access a series of novel fluorans substituted with a phenolic moiety. These fluorans display good thermochromism in methyl stearate and obviate the need for traditional complex formulations containing acidic colour developers.
White-light emission is realized through assembling a blue-emitting amorphous phase on a yellow-emitting Ca-SiAlON: Eu2+ phosphor particle in the form of a coating. The variation of the yellowish–white–blue color is traced with the control of a blue-emitting coating formed via in situ penetration of silicon oxide into…
We prepared GdS:Eu(3+) by simple thermal decomposition under 1-dodecanethiol. A reduction process was observed from Eu(3+) to Eu(2+) when oleic acid and hexadecylamine were injected into GdS:Eu(3+). Under UV excitation, GdS:Eu(3+) showed an intense orange-red emission and GdS:Eu(2+) showed a broad green band.
We present a method to prepare metallic foams with a unique architecture of small pores and thin struts using wet foams and emulsions stabilized by metallic nanoparticles as templates.
Light-induced deposition of gold nanostructures onto both n-type and p-type silicon was performed by galvanic displacement. On illuminating the n-type silicon with a 530 nm laser during the deposition process, a clustered deposit was observed whereas on using a 635 nm laser, gold nano-needles were formed. In compariso…
Cellulosic fibre/silica hybrid materials functionalized with Keggin-type polyoxometalates ([PV2Mo10O40]5−, [PVMo11O40]4−, ([PMo12O40]3− or [PW12O40]3−) were prepared by a sol–gel method at room temperature. The novel materials are composed of ca. 56 wt% of polysaccharides, ca. 37 wt% of propylamine-modified silica, 2…
A series of novel metallogelators containing near-IR nickel-bis(dithiolene) absorbers were rationally designed and synthesized. Robust gel networks are formed by right handed helical 1D-nanofibers which generate strong and remarkable chiro-optical effects in the near-infrared region.
A poly(glycidyl methacrylate) (PGMA) synthesized by RAFT polymerization was spin-coated onto a silicon substrate to yield, after annealing and rinsing unreacted chains, covalently attached epoxy-containing PGMA pseudo-brushes. A tailor-made ω-amino-poly(ethylene) (Mn = 1040 g mol−1, PDI = 1.3) was then grafted in melt…