The Fabrication And Application Of Generator Of Nanomaterials

One-dimensional (1D) nanostructures such as wires, rods, belts, and tubes have become the hotspot of intensive research owing to their particular application in physics and fabrication of nanoscale devices. The elemental boron and boride compounds hold a specific place within material for the complexity of their diverse structures associated with their unusual three-center electron-deficient bonds. In this article, we present a successful synthesis of large-scale crystalline boron nanowires (BNWs) on Au-coated Si substrates by a simple chemical vapor deposition (CVD) method using two kinds of innoxious and inexpensive reactant materials as the precursor at relatively low temperature (≤1000°C). The morphology and structural properties of samples were characterized by SEM, TEM, SAED, and XPS analytic instruments. The BNWs have lengths of several tens of micrometers with diameters of 80–150 nm. SAED and HRTEM analytic results testified that BNWs were single crystal core with a thin oxide sheath. By comparison of the BNWs samples synthesized at difference temperatures, we conclude that BNWs have lower growth rate at 950°C, whilst the suitable growth rate can be gained at 1000°C. This result shows that BNWs can be synthesized via one step CVD process at 1000°C, and overly high growth temperature (≥1200°C) is probably unnecessary. And the main factors affecting the growth of BNWs is conceptually discussed. These results are very useful in further studies and applications of 1D BNWs.Near-future research hotspots towards the integration of multifunctional nanodevices into a nanosystem. It highly thirsts for nanometer-sized power source to greatly allay the size and weight of the nanosystem and simultaneously keep the adaptability of the devices. This is a critical step toward self-powered nanosystems. In this paper, we report the successful growth of crystalline ZnO NWs on Au-coated Si substrates by a simple CVD method via the vapor–liquid–solid (VLS) growth mechanism, and more primarily present an innovatory approach to manufacture the micro/nanogenerator system by converting external electromagnetic wave energy into electric energy with the use of a single ZnO wire. We applied diverse metal (Pt, Au, Cu, Al, Zn, Ag) acted as the contact electrode is another originality in this paper. We also research the factors (e.g. the distance between the micro/nanogenerator and the electromagnetic wave emitter, the length-diameter of ZnO wire used in micro/nanogenerator) that impact the output power of the micro/nanogenerator. The electricity-generation mechanism of the generator relies on the electromagnetic induction effect and the formation of a rectification contact between the metal and ZnO wire contact interface.