Abstract:
A gas phase nanowire growth apparatus including a reaction chamber, a first input and a second input. The first input is located concentrically within the second input and the first and second input are configured such that a second fluid delivered from the second input provides a sheath between a first fluid delivered from the first input and a wall of the reaction chamber.
Abstract:
Provided is a manufacturing method of indium oxide nanorods, including the following steps: providing a temperature furnace divided into a first zone and a second zone; putting an indium metal source in the first zone and putting a substrate in the second zone; modulating a temperature of the first zone to a first temperature and modulating a temperature of the second zone to a second temperature, wherein the first temperature is higher than the second temperature; and inputting argon and oxygen into the temperature furnace when the temperature of the first zone reaches the first temperature and the temperature of the second zone reaches the second temperature, wherein a ratio of argon and oxygen is in a range of 30:1 to 70:1 such that a plurality of indium oxide nanorods are formed on the substrate. An indium oxide nanorod is also provided.
Abstract:
Method of preparing an article comprising a substrate bearing a microlayer which comprises uniformly oriented, crystalline, solid, organic microstructures. The microstructures may be mono- or polycrystalline. In the preferred embodiment, the microstructures are of uniform shape and size. The articles can be prepared by (1) vapor-depositing an organic compound as a thin, continuous film onto a substrate to provide a composite, and (2) annealing the composite in a vacuum sufficiently to induce a physical change in the original deposited film to form the microstructures. The microlayer can be overcoated with other materials to provide desired properties to the article. Articles of this invention are useful for many forms of light trapping, energy absorption, imaging, data transmission and storage, and gradient index applications.
Abstract:
Methods for obtaining vanadium suboxide of the general formula VOx, wherein x is comprised between 1.5 and 2.02, consisting in heating vanadium pentoxide, contained in an inert boat, in a reduced atmosphere in the presence of a stoichiometric amount of vanadium pentoxide or, alternately, in continuously evacuating the atmosphere of the vessel in which the boat is placed, and recovering the vanadium suboxide in a bulk or crystalline form remaining in the boat.
Abstract:
An optical nanoantenna includes a single-crystalline silver (Ag) nanowire. The single-crystalline silver nanowire is configured to output an optical antenna radiation pattern based on incident lights. The optical antenna radiation pattern includes multilobe radiation patterns, and each multilobe radiation pattern has a plurality of lobes that are radially disposed centered on the single-crystalline silver nanowire. The incident lights are visible lights in entire visible wavelength bands. Accordingly, the optical nanoantenna according to example embodiments operates at multiple resonances in the full visible range.
Abstract:
A bismuth single crystalline nanowire is fabricated by vaporizing bismuth powder on a substrate without using a template having nanopores. Instead a simple and reproducible vapor-phase transport process is used. The fabricated bismuth nanowires have high purity and quality with perfect single crystallinity, and can have uniform size and are not coagulated on a single crystalline substrate.
Abstract:
Methods and apparatus for producing self-assembling quantum nanostructures by nanoheating a substrate with one or more laser interference patterns.
Abstract:
The present invention provides a method for direct synthesis of three-dimensional nano-net-structures. The method is also named thermal evaporation method, which uses metal powders as the raw materials and silicon wafer, aluminum oxide plates or other high-temperature-resistant materials as substrates. The three-dimensional nano-net-structures of single crystal metal oxides are produced on a substrate by heating the metal powders to certain temperature and then keeping for a period of time under the atmosphere of inert gas. The process of the method is simple and direct, and the cost of the raw material is low. The prepared three-dimensional nano-net-structures will have great application prospects in vacuum microelectronic device and gas sensor device.
Abstract:
A process is provided to produce bulk quantities of nanowires in a variety of semiconductor materials. Thin films and droplets of low-melting metals such as gallium, indium, bismuth, and aluminum are used to dissolve and to produce nanowires. The dissolution of solutes can be achieved by using a solid source of solute and low-melting metal, or using a vapor phase source of solute and low-melting metal. The resulting nanowires range in size from 1 nanometer up to 1 micron in diameter and lengths ranging from 1 nanometer to several hundred nanometers or microns. This process does not require the use of metals such as gold and iron in the form of clusters whose size determines the resulting nanowire size. In addition, the process allows for a lower growth temperature, better control over size and size distribution, and better control over the composition and purity of the nanowire produced therefrom.