Materials Literature
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Intrinsic layered structure of graphite is the source of ongoing and expanding search of ways of obtaining low-cost and promising graphite thin layers. We report on a novel method of obtaing and seperating rubbed graphite sheets by using water soluble NaCl substrate. The electrical behavior of sheets was characterized…
In the present work we have performed an ab initio calculation of vibrational properties of CuTe 2 O 5 by means of density functional theory (DFT) method. One has compared calculated values with known experimental data on Raman and infrared spectroscopy in order to verify the obtained results. Lattice contribution to…
Step meandering instability in a Burton-Cabrera-Frank (BCF)-type model for the growth of an isolated, atomically high step on a crystal surface is analyzed. It is assumed that the growth is sustained by the molecular precursors deposition on a terrace and their decomposition into atomic constituents; both processes ar…
We demonstrate experimentally a chemical codoping approach that would simultaneously narrow the band gap and control the band edge positions of TiO2 semiconductors. It is shown that a sequential doping scheme with nitrogen (N) leading the way, followed by phosphorus (P), is crucial for the incorporation of both N and…
Controlling the threshold voltage (Vth) of a field-effect transistor is important for realizing robust logic circuits. Here, we report a facile approach to achieve bidirectional Vth tuning of molybdenum disulfide (MoS2) field-effect transistors. By increasing and decreasing the amount of sulfur vacancies in the MoS2 s…
Magnetic vortices have generated intense interest in recent years due to their unique reversal mechanisms, fascinating topological properties, and exciting potential applications. In addition, the exchange coupling of magnetic vortices to antiferromagnets has also been shown to lead to a range of novel phenomena and f…
We propose that a nano-scale displacement sensor with high resolution in weak-force systems can be realized based on vertically stacked two-dimensional (2D) atomic corrugated layer materials bound through van der Waals (vdW) interactions. Using first-principles calculations, we found that the electronic structures of…
First-principles calculations predict that SrFBiS 2 has a superior birefringence of 1.28, which is larger than the giant birefringence of LaOBiS 2 [Wang H, Chin. Phys. Lett. 31 (2013)047802]. An AF layer (i.e., SrF) is shown to be important by the further investigations on AFBiS 2 (A=Mg, Ca, Ba). Here MgFBiS 2 exhibit…
Silicon nanowires are prepared by the method of the two‐step metal‐assisted wet chemical etching. We analyzed the structure of solid, rough, and porous nanowire surfaces of boron‐doped silicon substrates with resistivities of ρ > 1000 Ωcm, ρ = 14–23 Ωcm, and ρ < 0.01 Ωcm by scanning electron microscopy and nitrogen ga…
Graphene oxide (GO) anchored porous manganese sulfide nanocrystals (MnS/GO-NH 3 ) were obtained via a facile hydrothermal method based on the Kirkendall effect.
Autonomous self-healable crosslinked materials designed with built-in ability to repair physical damage and cracks can prevent catastrophic failure and thus extend the lifetime of materials. They also retain their dimensional stability, mechanical strength, thermal stability, and solvent resistance. These features pro…
Well-defined star-like amphiphilic polymers composed of a β-cyclodextrin core, from which 21 hydrophobic poly(lactic acid) arms and hydrophilic poly(ethylene glycol) arms are grafted sequentially, form robust and uniform unimolecular micelles that are biocompatible and efficient in the delivery of anticancer drugs.
Hydrothermally synthesized tungsten oxide nanosheets exhibit fast and reversible intrinsic photochromic response.
Nitrogen-doped hierarchical porous carbon nanosheets were prepared through co-pyrolysis of magnesium citrate and potassium citrate and the following NH 3 treatment.
The chromaticity coordinates of CMLP:0.02 Ce 3+ , x Tb 3+ and CMLP:0.02 Ce 3+ , y Mn 2+ shift from the blue to red (arrow a) and green region (arrow b) respectively, as the value of x and y increase based on the energy transfers from Ce 3+ to Tb 3+ and Mn 2+ . White light is obtained in CMLP:0.02Ce 3+ ,0.04Tb 3+ ,0.04…
Magnetic field actuated shape recovery behavior of a 3D box folded by a Nafion/Fe 3 O 4 composite membrane with its surface temperature near body temperature.
Three-dimensional hierarchical porous carbons are synthesized via a simple one-pot method using the self-assembly of various water-soluble salts as structure-directing templates, which exhibit excellent capacitive performance.
Carbon dots doped with germanium (GeCDs) were firstly prepared by a new simple 15 min carbonation synthesis route, exhibiting excitation-independent photoluminescence (PL), which could avoid autofluorescence in bioimaging applications. The as-prepared GeCDs have low cell toxicity, good biocompatibility, high intracell…
Duplex Stainless Steels (DSS) and Super Duplex Stainless Steel (SDSS) have excellent integration of mechanical and corrosion properties. However, the formation of intermetallic phases is a major problem in their usage. The mechanical and corrosion properties are deteriorated due to the presence of intermetallic phases…
CuO/Cu 2 O porous composites with adjustable composition and various morphologies, including cube, octahedron, rod and wire, have been successfully achieved.