This paper describes PowerBooter, an automated power model construction technique that uses built-in battery voltage sensors and knowledge of discharge behavior to monitor consumption while explicitly controlling the management activity states individual components. It requires no external measurement equipment. We also describe PowerTutor, a component state introspection based tool generated by PowerBooter for online estimation. is intended make it quick easy application developers end...

Abstract A novel selenium form, nano red elemental (Nano‐Se) was prepared by adding bovine serum albumin to the redox system of selenite and glutathione. Nano‐Se has a 7‐fold lower acute toxicity than sodium in mice (LD 50 113 15 mg Se/kg body weight respectively). In Se‐deficient rat, both can increase tissue GPx activity. The biological activities were compared terms cell proliferation, enzyme induction protection against free racial‐mediated damage human hepatoma HepG2 cells. are...

Abstract Surface plasmon polaritons (SPPs) are electromagnetic excitations existing at the interface between a metal and dielectric material. Remarkable progress has been made in field of SPPs recent years. Control manipulation light using on nanometre scale exhibit significant advantages nanophotonics devices with very small elements, open promising way areas involving environment, energy, biology medicine. This paper presents an overview current research activities SPPs, including...

A novel 1D/1D nanocomposite-based photodetector is successfully fabricated from high-crystalline ZnS/ZnO biaxial nanobelts for the first time. Optimized performance of nanobelt much better than that pure ZnS or ZnO nanostructures, with a wide-range UV-A light photoresponse, high sensitivity, and very fast response speed.

A new hierarchy: supramolecular template strategy is used to synthesize hierarchical micro- and mesoporous metal–organic frameworks. The mesopore walls are constructed from a microporous framework (see picture). porosity can be tuned by using different templates at various molar ratios. Detailed facts of importance specialist readers published as ”Supporting Information”. Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted the authors. Please note:...

In this paper, we describe a facile, efficient, and environmentally friendly fabrication of novel type magnetic porous metal–organic-framework (MOF)-based nanocomposites that can be potentially used for targeted drug delivery. The MOF were fabricated by incorporation Fe3O4 nanorods with nanocrystals Cu3(BTC)2 (HKUST-1), three dimensional (3D) 3D channel system. as-synthesized materials exhibited both characteristics high porosity, making them excellent candidates delivery systems. An...

Abstract Layered titanates (Na 2 Ti 3 O 7 ·nH O) with exchangeable sodium cations located in the interlayer have been synthesized by simple hydrothermal treatment of precursor concentrated NaOH solutions. By proper control synthesis conditions, different morphologies nanofibers and nanosheets are obtained. The metastable layered structure collapses during ion exchange, resulting irreversible exchange. Target (eg., Ag + , Cu 2+ Pb Eu 3+ ) completely from water then tightly immobilized which...

Micro/nanoscale magnesium silicate hollow spheres were synthesized by using silica colloidal as a chemical template in one pot. The spherical structure, consisting of well-separated nanoscale units, was microscale whole and could be easily handled solution. as-synthesized with large specific surface area showed availability for the removal organic heavy-metal ions efficiently from waste water. Importantly, micro/nanoscale that had adsorbed pollutants regenerated calcination used repeatedly...

Large-scale CdS nanowires were achieved by a new, simple, and low cost process based on thermal evaporation of powders under controlled conditions with the presence Au catalyst. The synthesized have lengths up to several tens micrometers diameters about 60−80 nm. growth is conventional vapor−liquid−solid (VLS) mechanism. A strong red emission maximum around 750 nm was observed from at room temperature, which attributed their surface states. technique we used is, in principle, generalizable...

There are two mass diffusion processes regarding the vapor-liquid-solid (VLS) growth of nanostructures: one is inside catalyst droplet toward liquid-solid interface; other along side surface planes growing nanostructures. In this letter, microscale, modulated scenarios exhibited through synthesis types ZnS nanostructures in an Au-catalyzed VLS process: periodically twinned nanowires originated from periodical fluctuation between rate catalytic and on formation asymmetrically polytypic...

Abstract A template‐based heat‐treatment method has been developed to convert metal nanowire arrays into of metal–metal oxide core–shell nanowires and single‐crystalline nanotubes. This process is demonstrated by kinetically controlling the conversion Bi Bi–Bi 2 O 3 via a multistep, slow oxidation method, then their further nanotube array fast oxidation. can conveniently be extended fabricate free‐standing, easily oxidized array, which may have future applications in nanoscale optics,...

Zinc oxide nanostructures of various types, including nanobelts, nanoplatelets, nanowires, and nanorods, have been synthesized via well-developed routes by many research groups. However, so far, the underlying mechanism for morphology derivation evolution has not elucidated in depth. In this article, we report systematic investigation characteristics ZnO from dense rods to nanoplatelet flowers, nanobelt nanowire flowers an evaporation-physical transport-condensation approach. Through use...

We report on a controlled synthesis of two novel semiconducting heterostructures: heterocrystalline-ZnS/single-crystalline-ZnO biaxial nanobelts and side-to-side single-crystalline ZnS/ZnO via simple one-step thermal evaporation method. In the first heterostructure, ZnS domain is composed heterocrystalline superlattice (3C-ZnS) N /(2H-ZnS) M [111]-[0001] with atomically smooth interface between wurtzite zinc blende fragments. High-spatial resolution cathodoluminescence studies individual...

Synthesis of Bi2S3 nanotubes from rolling the quasi-two-dimensional (2-D) layered precursor represents new progress in synthetic approach and adds members to present inorganic fullerene family. These display multiwalled structures that resemble a carbon nanotube. The successful synthesis highlights feasibility fullerene-like other chemicals possess crystalline structures, not only well-known 2-D family, but possibly also those quasi-2-D members.

ZnS nanobelts with a pure wurtzite phase have been synthesized by thermal evaporation method the assistance of H2S in an Ar atmosphere. Photoluminescence band centered at about 535nm has observed under excitation range 250–480nm decay rate as short 860ps. The origin this intense photoluminescence is related to elemental sulfur species on surface nanobelts. This assignment substantiated structural analysis high-resolution electron microscopy, x-ray photoelectron spectroscopy, and technique....

Eu2O3 nanotubes have been successfully fabricated by an improved sol-gel template method within the nanochannels of porous anodic alumina templates. The morphology, structure, and composition were characterized means X-ray diffraction techniques, scanning electron microscope, transmission microscopy, selected-area diffraction. results show that are polycrystalline with a cubic structure. outer diameter is 50-80 nm, thickness tube wall about 5 nm. mechanism nanotube formation was discussed.

Novel flowerlike nanostructures consisting of MgO nanofibers were successfully synthesized by a simple chemical route with H(2)O at 950 degrees C in an Ar atmosphere. Various durations heating gave different growth stages that led to varied product morphologies. The products systematically studied X-ray powder diffraction, scanning electron microscopy, high-resolution transmission and energy-dispersive analysis. results show the nucleation process nanoflowers seems be vapor-solid mechanism,...

Indium oxide (In2O3) octahedrons and nanowires were synthesized by chemical vapor deposition (CVD) through selecting appropriate source materials controlling proper external conditions. The growth mechanisms of In2O3 analyzed in detail, based on which model single-crystalline nanostructures with different morphologies was proposed. pressures materials, the temperature difference between central heating zones product zones, reaction time, surface energies are all responsible for final...

Semiconductor ZnO nanotube arrays have been synthesized by direct electrochemical deposition from aqueous solutions into porous anodic alumina membranes. Scanning electron microscopy and transmission indicate that large-area highly ordered obtained. X-ray diffraction selected-area analyses show the as-synthesized nanotubes are polycrystalline. Photoluminescence spectra of a violet peak blue centered at 414 464 nm, respectively. The polycrystalline may find potential applications in...

Effects of nitrogen incorporation on the interface chemical bonding states, optical dielectric function, band alignment, and electrical properties sputtering-derived HfTiO high-<italic>k</italic>gate dielectrics GaAs substrates have been studied by angle resolved X-ray photoemission spectroscopy (ARXPS), ellipsometry (SE), measurements.

Surface plasmons (SPs) are electromagnetic excitations existing at the interface between a metal and dielectric material. Control manipulation of light based on SPs nanometer scale offers significant advantages in nanophotonic devices with very small elements, since peculiar properties can be tailored by construction nanostructures various interfaces metals materials. Recent progress for is reviewed. Resonance frequencies or wavelengths tuned design nanostructures, such as nanoparticles,...