Metal nanoparticles , nanowires , and carbon nanotubes
نویسندگان
چکیده
The size-dependent metal to nonmetal transition in metal nanoparticles has been investigated using photoelectron and tunneling spectroscopic techniques. Metal nanoparticles capped by thiols are shown to organize into ordered 2D and 3D structures. Single-walled nanotubes and aligned carbon nanotube bundles have been synthesized by controlling the size of metal nanoparticles produced in situ during the pyrolysis of precursors. Nanowires of gold and other metals have been produced in the capillaries of the single-walled nanotubes.
منابع مشابه
Fabrication and Properties of Ag-nanoparticles Embedded Amorphous Carbon Nanowire/CNT Heterostructures
Carbon nanotubes were subjected to doping with an energetic Ag ion beam, and the carbon nanotubes on the top of the array were transformed into amorphous carbon nanowires with embedded Ag-nanoparticles. The field emission characteristics of these nanowires were investigated. The minimum turn-on and threshold fields were 0.68 and 1.09 V/mum, respectively, which were lower than those of the as-gr...
متن کاملLiquid-phase metal inclusions for a conductive polymer composite.
dielectric elastomer actuators, [ 17 ] and memristors. [ 18 ] Liquidphase gallium–indium alloys are popular for this “microfl uidics” approach to stretchable electronics since they are nontoxic and form an oxide layer [ 19–22 ] that aids in microcontact printing, [ 23 ] electrode alignment, [ 24 ] and 3D printing. [ 25 ] Finally, a common approach to stretchable electronics is to embed thin fi ...
متن کاملNanostructured thin films made by dewetting method of layer-by-layer assembly.
Layer-by-layer (LBL) assembly is one of the most ubiquitous coating techniques today. It also offers a pathway for multifunctional/multicomponent materials with molecular-scale control of stratified structures. However, technological applications of LBL are impeded by laborious and fluid-demanding nature of the process. While vertical organization of LBL films is natural for this technique, the...
متن کاملSiO(2)/Ta(2)O(5) core-shell nanowires and nanotubes.
One-dimensional nanostructures such as nanowires, nanobelts, and nanotubes have attracted much attention as a result of their unique properties, which can be applied in the fabrication of biomedical sensors, optoelectronic devices, field-effect transistors, and field-emission devices, for example. In particular, one-dimensional nanostructures of metal oxides such as ZnO, SnO2, [3] a-Fe2O3, [4] ...
متن کاملFilling Single Wall Carbon Nanotubes with Metal Chloride and Metal Nanowires and Imaging with Scanning Transmission Electron Microscopy
Nanowires of magnetic metals (Ho, Gd) have been synthesized inside the hollow interior of single wall carbon nanotubes by the sealed-tube reaction. Amongst the dand f-series metal chlorides investigated in this study, HoCl3 and GdCl3 fill the SWNTs to a significantly higher extent than FeCl2 and CoCl2. HoCl3 and GdCl3 nanowires have been transformed into the respective metal nanowires via the r...
متن کامل