Intrinsic carrier mobility of germanene is larger than graphene's: first-principle calculations
Shown here is the intrinsic carrier mobility (ICM) of germanene, a group-IV graphene-like two-dimensional buckled nanosheet.
Materials Literature
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Recent progress in fabrication and characterisation of hierarchical biomimetic superhydrophobic structures
Here, we have reviewed brief ideas of fabrication of superhydrophobic surfaces and their important applications, which were discussed in the concluded national/international workshops and conferences organized by different industries and laboratories of ISRO (Indian Space Research Organization), DRDO (Defence Research…
Engineering in direct synthesis of hydrogen peroxide: targets, reactors and guidelines for operational conditions
The demand for hydrogen peroxide is booming since it is considered as one of the most environmentally friendly and versatile chemical oxidants available and has a wide range of applications. The annual market, close to 3000 kt per year being produced via the auto-oxidation process (with 2-ethyl anthraquinone (traditio…
Selective synthesis of hierarchical mesoporous spinel NiCo2O4 for high-performance supercapacitors
Hierarchical mesoporous spinel NiCo₂O₄ was synthesized by a facile hydrothermal method assisted by polyvinylpyrrolidone (PVP) and a post annealing treatment. The synthesized hierarchical mesoporous NiCo₂O₄ presents a hierarchical mesoporous structure with diameters of 5.0 and 25 nm, respectively. Compared to conventio…
Construction of one-dimensional nanostructures on graphene for efficient energy conversion and storage
This review summarizes the recent development of one-dimensional nanostructures constructed on graphene as electrodes have unique physico-chemical properties to synergistically offer highly-efficient energy conversion and storage.
Green up-conversion luminescence of Yb3+-Er3+ co-doped CaLa2ZnO5 for optically temperature sensing
A class of Yb3+/Er3+ ion co-doped CaLa2ZnO5 (CLZ) novel up-conversion (UC) phosphors were synthesized by a sol–gel method. The crystal structure and the phase composition of the samples were characterized by X-ray diffraction (XRD). Under 980 nm excitation, UC spectra are composed of three prominent emission bands cen…
IR and Raman Spectra Properties of Bi<sub>2</sub>O<sub>3</sub>-ZnO-B<sub>2</sub>O<sub>3</sub>-BaO Quaternary Glass System
Among new low-melting-point glasses, bismuth ate glass is deemed to have the most potential as an environmentally friendly replacement for polluting Pb-containing glasses. Current studies of boro-bismuthate glasses focus on the structural influence of the additional oxide in the context of low-melting-point electronic…
Porous Au Nanoparticles with Tunable Plasmon Resonances and Intense Field Enhancements for Single-Particle SERS
Porous Au nanoparticles with fine-controlled overall particle sizes have been fabricated using a kinetically controlled seed-mediated growth method. In contrast to spherical Au nanoparticles with smooth surfaces, the porous Au nanoparticles exhibit far greater size-dependent plasmonic tunability and significantly inte…
Towards covalent organic frameworks with predesignable and aligned open docking sites
A strategy for the synthesis of covalent organic frameworks with open docking sites is developed. The docking sites are ordered on the channel walls and structurally predesignable for meeting various types of noncovalent interactions, thus opening a way towards designing supramolecular materials based on crystalline p…
Inorganic–organic hybrid polymer with multiple redox for high-density data storage
A multi-redox polyoxometalate-based hybrid polymer has been demonstrated to show multilevel resistive switching memory behaviors.
Foams stabilised by mixtures of nanoparticles and oppositely charged surfactants: relationship between bubble shrinkage and foam coarsening
We have studied foams stabilised by surfactant-decorated nanoparticles adsorbed at the bubble surfaces. We show that the controlled compression of a single bubble allows one to understand the coarsening behavior of these foams. When bubbles are compressed, the particles become tightly packed in the surface layer. They…
Toxicity Effect of Silver Nanoparticles in Brine ShrimpArtemia
The present study revealed the toxic effect of silver nanoparticles (AgNPs) in Artemia nauplii and evaluated the mortality rate, hatching percentage, and genotoxic effect in Artemia nauplii/cysts. The AgNPs were commercially purchased and characterized using field emission scanning electron microscope with energy disp…
Nitrogen-doped reduced graphene oxide for high-performance flexible all-solid-state micro-supercapacitors
Flexible all-solid-state micro-supercapacitors were fabricated by a screen printing method using N-doped reduced graphene oxide as an active material and show high specific capacitance and long cycle life.
Development of sol–gel processed semi-transparent and self-cleaning superhydrophobic coatings
The formation of an air-column on a superhydrophobic surface: the superhydrophobic coating is surrounded by blue colored water forming an air column, and water acquires a height of nearly 5 mm around the boundaries of the superhydrophobic coating. This confirms that the superhydrophobic surface strongly repels water a…
Facile fabrication of ultrathin graphene papers for effective electromagnetic shielding
Novel conductive ultrathin graphene papers demonstrate effective EMI shielding of ∼46.3 dB (∼0.3 mm) and ∼47.7 dB (∼0.1 mm) in attenuators.
Development of epoxy mixtures for application in aeronautics and aerospace
The presence of reactive diluent 1,4-Butandioldiglycidylether in epoxy mixtures reduces the sorption at equilibrium of liquid water (graphic on the right) and eases the step of nanofiller dispersion (figure on the left).
An electroactive porous network from covalent metal–dithiolene links
Simple synthesis and versatile functions: by directly reacting a triphenylene hexathiol molecule (HTT) with PtCl2, a covalent metal-organic framework (CMOF) has been prepared that features substantial porosity, redox activity and ion exchange capability.
SnTe–AgBiTe 2 as an efficient thermoelectric material with low thermal conductivity
SnTe–AgBiTe <sub>2</sub> is not only a solid solution but a nanocomposite. The alloying effect coupled with intense interface scattering leads to considerably decreased lattice thermal conductivity. Bi is much more powerful in neutralizing holes than Sb, giving rise to a much higher Seebeck coefficient. A high <italic…
Understanding the reactivity of metallic nanoparticles: beyond the extended surface model for catalysis
Metallic nanoparticles (NPs) constitute a new class of chemical objects which are used in different fields as diverse as plasmonics, optics, catalysis, or biochemistry. The atomic structure of the NP and its size usually determine the chemical reactivity but this is often masked by the presence of capping agents, solv…
Green synthesis of copper nanoparticles and conducting nanobiocomposites using plant and animal sources
We report large-scale biosynthesis of copper nanoparticles using an extract of henna leaves as reductant. Due to the substantial electrical conductivity of the calcined copper nanoparticles, we used them to prepare conductive nanobiocomposites utilizing collagen waste. We demonstrate that the nanobiocomposites, when i…