Materials Literature
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We develop a quantitative model of the self-catalyzed vapor-liquid-solid growth of GaAs nanowires, that depends on only a few a priori unknown physical parameters. The model is based on the sole consideration of the As species and incorporates all relevant mechanisms of exchange of As between the vapor, liquid, and so…
An effective method for depositing highly transparent and conductive ultrathin silver (Ag) electrodes using minimal oxidation is reported. The minimal oxidation of Ag layers significantly improves the intrinsic optical and structural properties of Ag without any degradation of its electrical conductivity. Oxygen‐doped…
Recyclable nanocatalysts of core-shell bimetallic nanocrystals are developed through polydopamine coating-directed one-step seeded growth, interfacial assembly, and substrate-immobilization of Au@Ag core-shell nanocrystals. This strategy provides new opportunities to design and optimize heterogeneous nanocatalysts wit…
Patterned photonic crystal (PC) domes with angle-independent photonic bandgaps are fabricated by inkjet printing droplets with controlled sliding three phase contact lines. Enhanced brightness over 40 times and a wide viewing-angle from 0° to 180° are easily achieved by incorporating fluorescent molecules into the PC…
A class of soft actuated materials that can achieve lifelike motion is presented. By embedding pneumatic actuators in a soft material inspired by a biological muscle fibril architecture, and developing a simple finite element simulation of the same, tunable biomimetic motion can be achieved with fully soft structures,…
Ketonic carbonyl groups are catalytic active sites for oxidative dehydrogenation (ODH) reactions on carbon nanotubes. The quantity of these groups could be calculated from chemical titration with hydrazine compounds. ODH catalytic activity of nanocarbon is directly correlated with surface concentration of ketonic carb…
Energetic 3D MOFs: A structurally unique class of three-dimensional energetic metal–organic frameworks (MOFs) was successfully synthesized and characterized. These MOFs have a good thermal stability and a low sensitivity to impact, friction, and electrostatic discharge. The depicted 3D porous MOF shows the unprecedent…
Electrospinning is a technique that is exceptionally well-suited for reliable, cost-effective production that uses electrostatic forces to form and manipulate a jet of polymer solution to form nanosized, fibrillar polymeric materials. However, producing smooth (non-beaded) fibres with truly nanosized diameters is not…
Abstract This paper is concerned with an optimal control problem for the phase-fieldtransition system with state constraint and obstacle. After showing the relationshipbetween the control problem and its approximation, we derive Pontryagin’smaximum principle for an optimal control of our original problem by using one…
In recent years, with the requirements of environmental protection of packaging materials improve, biodegradable materials more and more attention to. This paper to waste as raw materials, and by the synthesis of the biodegradable packaging material performance for research. The results show that: to recycle waste as…
Abstract Tasar silk is a variety of non‐mulberry silk indigenous to the Indian subcontinent. We present the measured frequency‐dependent viscoelastic moduli of Tasar regenerated silk fibroin (RSF) solution using optical tweezers at two concentrations (0.16% and 0.25% w/v) and extend these measurements to the low frequ…
Since the discovery of graphene, many efforts have been done to modify the graphene structure for integrating this novel material to nanoelectronics, fuel cells, energy storage devices and in many other applications. This leads to the production of different types of graphene-based materials, which possess properties…
We describe the direct measurement of actual transmittance of sodium samples with thickness of a 2 mm and 3 mm in a spectral range >115 nm, resulting in >50% transmittance of 3 mm thick solid and liquid sodium samples including transmission of a pair of the windows at the wavelength of 120 nm, giving an extinction coe…
Silver-based nanocomposites are known to act as biocides against a series of microorganisms and are largely studied as an alternative to substitute conventional antibiotics that show decreasing efficacy. In this work, an eco-friendly method to synthesize silver nanoparticles assembled on the surface of hexaniobate cry…
Morphological inhomogeneity between electrodeposited cuprous oxide (Cu 2 O) thin films on nominally equivalent tin-doped indium oxide (ITO) electrodes under identical deposition conditions is reported. Dependence of the Cu 2 O photocurrent generation ability on thin-film morphology is also described. Films exhibiting…
Mechanisms of fire retardancy of intumescent Gaialene® (a polypropylene-grafted starch, containing ammonium polyphosphate as flame retardant) exhibiting high performance (60% reduction of the peak of heat release rate at 35 kW/m 2 , high limiting oxygen index (30 vol% O 2 ), and UL-94 V0 ranking at 1.6 mm and V2 at 0.…
Using reverse nonequilibrium molecular dynamics simulations the influence of intermolecular bridges on the thermal conductivity (λ) in carbon nanotube (CNT) bundles has been investigated. The chosen cross linkers (CH2, O, CO) strengthen the transversal energy transport relative to the one in CNT bundles without bridge…
Structural, electronic and optical properties of the antisite BiMO4 defect in Bi12MO20 sillenites (BMO, M=Si, Ge, Ti) were investigated using density functional theory. The defect is studied in neutral, positively and negatively charged states. It is demonstrated that within the neutral defect the Bi 6s(2) lone pair i…
He atoms introduced into materials may lead them to fracture intergranularly, and understanding such an effect is a key issue in the design of future fusion reactors. In the current study, we investigated the decrease of grain boundary (GB) strength caused by He segregation at several kinds of α -Fe GBs by exploiting…
Abstract A solid oxide fuel cell in operando is a complex multiphasic entity under electrical polarization and operating at high temperatures. In this work, we reproduce these conditions while studying transition metal redox chemistry in situ at the cathode. This was achieved by building a furnace that allowed for X‐r…