Materials Literature
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Molecular beam epitaxy growth of superconducting LiFeAs film on SrTiO3(001) substrate, Chang, K., Deng, P., Zhang, T., Lin, H.-C., Zhao, K., Ji, S.-H., Wang, L.-L., He, K., Ma, X.-C., Chen, X., Xue, Q.-K.
A model is proposed that considers aging and rejuvenation in a soft glassy material as, respectively, a decrease and an increase in free energy. The aging term is weighted by an inverse of characteristic relaxation time suggesting that greater mobility of the constituents induces faster aging in a material. A dependen…
The authors report measurement of the radio‐frequency (RF) transport electromagnetic properties of chemical vapour deposition graphene over the direct current (DC) to 110 MHz frequency range at room temperature. Graphene on Si/SiO 2 substrate was mounted in a shielded four terminal‐pair (4TP) adaptor which enabled dir…
Based on isotope labelling, we found that liquid water can afford an ultrafast permeation through graphene-based nanochannels with a diffusion coefficient 4-5 orders of magnitude greater than in the bulk case. When dissolving ions in sources, the diffusion coefficient of ions through graphene channels lies in the same…
A material's response to small but finite deformations can reveal the roots of its response to much larger deformations. Here, we identify commonalities in the responses of 2D soft jammed solids with different amounts of disorder. We cyclically shear the materials while tracking their constituent particles, in experim…
The problem of measuring the resistivity of isotropic samples of finite dimensions in the form of rectangular parallelepipeds using the four-probe technique was considered. Two variants of contact arrangements were studied: (1) four collinear probes are positioned on one side of a sample symmetrically with respect to…
We report calculations of the electronic structure and optical properties of doped n-type perovskite BaSnO3 and layered perovskites. While doped BaSnO3 retains its transparency for energies below the valence to conduction band onset, the doped layered compounds exhibit below band edge optical conductivity due to trans…
Fluorescent nanodiamonds are attracting major attention in the field of bio-sensing and bio-labeling. In this work we demonstrate a robust approach to achieve an encapsulation of individual nanodiamonds with phenol-ionic complexes that enhance the photoluminescence from single nitrogen vacancy (NV) centers. We show th…
We have found a quantitative connection between the evolution of the inhomogeneous nanoscale electronic gaps (INSEG) state detected in Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ by scanning tunneling microscopy/spectroscopy (STM/S) and the two universal, the upper and the lower, pseudogaps in high-temperature cuprate superconducto…
Superconductivity of high critical temperature ($T_{c}$) superconductors is usually realized through chemical dopant or application of pressure in a similar way to induce charge carriers of either electrons or holes into their parent compounds. For chemical doping, superconductivity behaves asymmetrically with the max…
To explore underlying mechanism for the superconducting phase in recent discovered aromatic hydrocarbons, we carry out the first-principles calculations on benzene, the basic and the simplest unit of the series and examine the structural and phase stability when doped by potassium, K$_x$C$_6$H$_6$ ($x=1,2,3$). We find…
Vertically aligned CNTs exhibit 100× and 170× higher capacitance when coated with ALD RuO x and after further electrochemical oxidation, respectively.
Partial reduction of graphene oxide (GO) was accomplished through heat treatment at 110 and 220 °C. Role of various oxygen functional groups in graphene and their gas sensing and electrical properties at room temperature were reported.
The preparation and applications of graphene (G)-based materials are attracting increasing interests due to their unique electronic, optical, magnetic, thermal, and mechanical properties. Compared to G-based hybrid and composite materials, G-based inorganic hybrid membrane (GIHM) offers enormous advantages ascribed to…
Binary nickel cobaltite oxides intimately standing on nitrogen-doped reduced graphene sheets are prepared utilizing a one-step hydrothermal synthesis.
CuO nanoparticles, Cu 2 O/CuO and CuO/TiO 2 nanocomposites exhibit excellent photocatalyst properties toward the degradation of methyl-orange and potassium-dichromate under the visible light irradiation.
Sm 3+ (Sm 3+ = 2, 5, 7 and 10 at%) doped CaWO 4 nanophosphors exhibit a wide range emission in blue, green and red regions of the visible spectrum.
This work will shed light on the rational design of more complex 2D/2D heterojunctions with the Z-scheme energy-transfer mechanism.
We report here the investigations on the size dependent variation of magnetic properties of nickel ferrite nanoparticles. Nickel ferrite nanoparticles of different sizes (14 to 22 nm) were prepared by the sol-gel route at different annealing temperatures. They are characterized by TGA-DTA, XRD, SEM, TEM and Raman spec…
). A 7 day in vitro assessment of human umbilical arterial SMCs cultured on these aligned nano-porous fiber substrates indicated that cellular responses were in close correlation with the elliptical nano-pore feature. A pronounced fiber surface nanotopography was superior in soliciting favorable cellular responses, le…