Materials Literature
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Superhydrophobic surfaces aid biochemical analysis by limiting sample loss. A system based on wells here tolerated tilting up to 20° and allowed air logic transfer with evidence of mixing. Conditions for intact transfer on 15 to 60 μL drops using compressed air pressure operation were also mapped.
Abstract In vielen biologischen Systemen wird die Erkennung von Oberflächen durch die Wechselwirkung von Kohlenhydrat‐spezifischen Proteinen (Lektinen) mit den Kohlenhydratepitopen (Liganden) der ungeordneten Glycokonjugatschicht (Glycokalyx) der Zellen gesteuert. Damit es zu einer erfolgreichen Anbindung kommt, müsse…
This theoretical study suggests that CH⋅⋅⋅π stacking interactions between monomeric units can be used to design novel single-chain magnets (SCMs), as the sign of coupling is predictable and such chains inherently yield negative axial anisotropy, a condition often difficult to achieve in conventional SCMs.
A facile fabrication of flower-shaped porphyrin Janus colloids with oriented arrangement was demonstrated based on the interfacial assembly and water droplet template. The as-fabricated colloidal crystals from flower-shaped Janus particles show a special optical signal produced from the hierarchical structures.
Several experiments reveal the inhomogeneous character of the superconducting state that occurs when the carrier density of the two-dimensional electron gas formed at the LaXO3/SrTiO3 (X=Al or Ti) interface is tuned above a threshold value by means of gating. Re-analyzing previous measurements, that highlight the pres…
Microcrystalline cellulose (MCC) was prepared by hydrochloric acid hydrolysis from Muli bamboo (Melocanna baccifera) fibers to tap its potential as a green source of MCC. The cellulose and α-cellulose yield from the original material were 62.5 and 54.8 % respectively. The physicochemical properties of the prepared MCC…
The electronic structure and magnetic properties of GeTe-based dilute magnetic semiconductors (DMS) are investigated by the Korringa-Kohn-Rostoker Green's function method and the projector augmented wave method. Our calculations for the formation energies of transition metal impurities (TM) in GeTe indicate that the s…
Molecular static calculation is carried out to evaluate the role of van der Waals interaction associated with different oriented attachment growth systems involving 0D nanoparticles, 1D nanorods, 2D nanoplates and 3D nanostrucutres.
High performance porous Si based supercapacitor electrodes are demonstrated. High power density and stability is provided by ultra-thin TiN coating of the porous Si matrix. The TiN layer is deposited by atomic layer deposition (ALD), which provides sufficient conformality to reach the bottom of the high aspect ratio p…
This paper reports the ANSYS simulation and fabrication processes for optimising PDMS ferroelectret performance. The proposed model extends the previously published analytical models and compares this with simulation of individual void geometry. The ferroelectret material is fabricated from PDMS using 3D-printed plast…
We present two theoretical models to predict the lattice thermal conductivity degradation of insulating materials at high temperature (above one‐third of the Debye temperature). This degradation is due to the presence of grains, with known sizes and shapes, inducing thermal resistance at their boundaries. The first mo…
major and minor ampullate dragline spider fibers in the native dry, contracted (by immersion in water) and restretched (from contracted) states. Changes in the orientation of β-sheet nanocrystallites and the oriented component of the amorphous network have been determined from wide-angle x-ray diffraction patterns. Wh…
We report on the properties of a Nd 2 Hf 2 O 7 single crystal which is a promising high- k gate dielectric due to its high permittivity and band gap.
Collagen due to its filamentous shape and unique properties is a very promising molecule for the development of nanostructures, scaffolds, cell culture platforms and nanobiomaterials. Furthermore, collagen thin films are of great interest as they can cover non-biological surfaces in medical devices and sensors so as t…
Carboxymethyl chitin was synthesized through a “green” and homogeneous way in NaOH–urea solvent. Reversible sol–gel transition of carboxymethyl chitin hydrogel can be realized by an electrochemical method.
Circular braiding has been successfully adapted for producing near-net shape structures for advanced fiber-reinforced composites. Net-shape manufacturing is significantly important for fabricating complex three-dimensional (3D) preforms. Geometrical modeling of braid patterns on 3D preforms plays a key role in determi…
Domain structure of several poled (K 0.50 Na 0.50 ) 1− x Li x NbO 3 ceramics (with chemical compositions of x = 0.03, 0.065, and 0.08, respectively) was investigated by means of observing the domain patterns with an acid‐etching technique. Among the three ceramics, the one with x = 0.03 is of orthorhombic phase and th…
Warm white LEDs were fabricated by combining a 432 nm blue LED with a single-phase white emitting phosphor Ca 4 Y 6 O(SiO 4 ) 6 :Eu 2+ , Mn 2+ .
We study in the melt the linear viscoelastic properties of supramolecular assemblies obtained by adding different amounts of nickel ions to linear entangled poly(ethylene oxide) (PEO) building blocks end-functionalized by a terpyridine group. We first show that the elasticity of these supramolecular assemblies is main…
In this paper, we present a numerical and experimental study of a composite material with conducting spheres embedded in a polymer matrix. Our main objective is to study how the particle size and thermal contact affect the overall thermal properties of composites. In the numerical study, finite elements method is used…