Search results
Results from the WOW.Com Content Network
Nanofibers were first produced via electrospinning more than four centuries ago. [28] [29] Beginning with the development of the electrospinning method, English physicist William Gilbert (1544-1603) first documented the electrostatic attraction between liquids by preparing an experiment in which he observed a spherical water drop on a dry surface warp into a cone shape when it was held below ...
A nanofiber has two external dimensions in the nanoscale, with nanotubes being hollow nanofibers and nanorods being solid nanofibers. A nanoplate/nanosheet has one external dimension in the nanoscale, [20] and if the two larger dimensions are significantly different it is called a nanoribbon. For nanofibers and nanoplates, the other dimensions ...
Although graphene sheets have 2D symmetry, carbon nanotubes by geometry have different properties in axial and radial directions. It has been shown that CNTs are very strong in the axial direction. [1] Young's modulus on the order of 270–950 GPa and tensile strength of 11–63 GPa were obtained. [1]
To put it simply, nanofibers are a super, super thin material that can be made from a super strong (and super thin) carbon material, and are generally good conductors of heat and electricity.
One study proposes polyaniline nanofiber composites with metal salts for the detection of hydrogen sulfide. [14] Hydrogen sulfide is a weak acid that is dangerous at low ppm, but polyaniline nanofibers can only give a robust response to strong acids. Metal salts can react with hydrogen sulfate to form a metal sulfide precipitate and a strong acid.
The metal is capable of forming nanosize carbon structures, and growing nanosize carbon structures by means of a chemical vapor deposition method on the treated carrier in a gas atmosphere comprising a carbon-containing gas, followed by an optional surface modification step. This process allows optimizing porosity, hydrodynamical properties and ...
Electroless deposition processes can form colloid suspensions catalytic metal or metal oxide deposition. The suspension of nanoparticles that result from this process is an example of colloid . Typical instances of this method are the production of metal oxide or hydroxide nanoparticles by hydrolysis of metal alkoxides and chlorides .
Filamentous carbon is a carbon-containing deposit structure that refers to several allotropes of carbon, including carbon nanotubes, carbon nanofibers, and microcoils. [1] [2] [3] It forms from gaseous carbon compounds. [1] Filamentous carbon structures all contain metal particles. These are either iron, cobalt, or nickel or their alloys.