Materials Literature
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We report measurements of ac magnetic susceptibility ${\ensuremath{\chi}}_{\text{ac}}$ and de Haas--van Alphen (dHvA) oscillations in ${\mathrm{KFe}}_{2}$${\mathrm{As}}_{2}$ under high pressure up to 24.7 kbar. The pressure dependence of the superconducting transition temperature ${T}_{c}$ changes from negative to pos…
Herein, we report on a one-step coelectrodeposition method to form gold-silica nanocomposite materials from which high surface area nanostructured gold electrodes can be produced. The as-prepared Au-SiO2 films possess an interconnected three-dimensional porous framework with different silica-gold ratios depending on t…
Nowadays, functional ceramics have been largely explored for application in various fields. However, magnetic functional ceramics for spintronics remain little studied. Here, we propose a nano-functional ceramic of sphalerite SiN-SiC nanofilm with intrinsic ferromagnetic order. Based on first principles calculations,…
In this communication we present a synthetic pathway toward CdSe@CdS/ZnS nanorods which are built in a segment like manner (a CdSe core which is embedded in a CdS rod which then epitaxially ends in a ZnS rod). This structure is realized exploiting a sequential cation exchange mechanism. In a first step, CdSe@CdS rods…
⟨001⟩pc textured K0.5Na0.5NbO3 (KNN) ceramic was found to exhibit a 65% improvement in the longitudinal piezoelectric response as compared to its random counterpart. Piezoresponse force microscopy study revealed the existence of larger 180° and non-180° domains for textured ceramic as compared to the random ceramic. I…
This article reports a facile route for the synthesis of different generations of 1,2,3-triazole-rich hyperbranched polyether polyols using click chemistry and extends their application for the development of moisture-cured polyurethane–urea coatings. Initially, three generations of chlorinated hyperbranched polyether…
Lanthanide upconversion (UC) materials that convert near-infrared excitations into visible emissions are of extensive current interest owing to their potential applications in biosensing, 3D displays, and solar cells. A wise choice of the host lattice is crucial for high-quality UC luminescence with desired emission w…
The CoFe thickness (tCoFe) dependence of spin injection efficiency was investigated for Co2MnSi/CoFe/n-GaAs junctions. The ΔVNL/I value, which is a measure of spin injection efficiency, strongly depended on tCoFe, where ΔVNL is the amplitude of a nonlocal spin-valve signal, and I is an injection current. Importantly,…
This article describes the preparation, using layer-by-layer deposition techniques, of an all-solid-state flexible in-plane supercapacitor based on a poly(ethylene terephthalate) (PET) substrate, laminated with two strata of ultrathin multilayer films composed of 30 polyaniline (PANi)/reduced graphene oxide (RGO) bila…
A model to simulate the dependence of surface-enhanced coherent anti-Stokes Raman scattering spectra on the position and line width of the surface plasmon resonance is developed and strategies to increase experimental enhancement factors towards theoretical predictions are proposed.
Significant progress has been made in the construction and theoretical understanding of molecular motors because of their potential use. Here, we have demonstrated fabrication of a simple but powerful 1 nm thick graphene engine. The engine comprises a high elastic membrane-piston made of graphene and weakly chemisorbe…
The discovery of gigantic molecular nanostructures like coordination and polyoxometalate clusters is extremely time-consuming since a vast combinatorial space needs to be searched, and even a systematic and exhaustive exploration of the available synthetic parameters relies on a great deal of serendipity. Here we pres…
We have performed systematic angle-resolved photoemission spectroscopy (ARPES) of iron-chalcogenide superconductor ${\mathrm{FeTe}}_{1\ensuremath{-}x}$${\mathrm{Se}}_{x}$ ($0\ensuremath{\le}x\ensuremath{\le}0.45$) to elucidate the electronic states relevant to the superconductivity. While the Fermi-surface shape is ne…
We perform scanning photocurrent microscopy on WS2 ionic liquid-gated field effect transistors exhibiting high-quality ambipolar transport. By properly biasing the gate electrode, we can invert the sign of the photocurrent showing that the minority photocarriers are either electrons or holes. Both in the electron- and…
Research into silicon solar cells that use a thin film of single walled carbon nanotubes as the front electrode is an important area of increasing research activity. This paper provides the first ever direct performance comparison between devices fabricated with either semiconducting, metallic or mixed nanotubes to pr…
The outstanding high-frequency properties of emerging resilin-like polypeptides (RLPs) have motivated their development for vocal fold tissue regeneration and other applications. Recombinant RLP hydrogels show efficient gelation, tunable mechanical properties, and display excellent extensibility, but little has been r…
Scientists combine metals and ferrites to construct metamaterial particles that transform electric and magnetic fields in a controllable manner, producing nonreciprocal light scattering and other counterintuitive properties. These materials could be used in future exotic applications such as perfect electromagnetic is…
The following polymer structural transitions were achieved using light: preferred-handed helix formation for poly(9,9-di-n-octylfluoren-2,7-diyl), helix racemization (helix-helix transition) for poly(2,7-bis(4-t-butylphenyl)fluoren-9-yl acrylate) and poly(2,5-bis[4-((S)-2-methylbutyloxy)phenyl]styrene), and helix deco…
We report the control of semiconductor to metal transition in VO2(010) epilayers integrated with Si{100} substrates buffered with an NiO[111]/YSZ[100] intermediate layer. VO2 epitaxial thin films were grown at different thicknesses varying from 10 to 200 nm using pulsed laser deposition technique. An epitaxial relatio…
Pure phase and europium-doped ceria nanocrystals have been synthesized by a single step simple solvothermal process. Different spectroscopic, diffractive, and microscopic techniques were used to determine the morphology, size, crystal structure, and phase of all the samples. Electron energy loss spectroscopy (EELS) fo…