Oriented carbon nanotubes are carbon nanotubes with the same growth direction, which can give full play to the excellent thermal conductivity and charge transport properties of carbon nanotubes along the axial direction, thus having a wider application field. In the experimental research of inertial confinement fusion targets, the emission and utilization of epithermal electrons are the focus of physical design research. ANCTs are expected to be applied in this field due to their special tubular structure and charge transport properties.
There are many ways to prepare carbon nanotubes. The article "Substrate-grown aligned carbon nanotube arrays prepared by spin-coating method" mainly uses the spin-coating method to prepare substrate-grown aligned carbon nanotube arrays. The article introduces the specific preparation methods in detail. The experimental process, and the samples were characterized by scanning electron microscope, transmission electron microscope and Raman spectrometer.
The conclusions show that the spin coating method is used to prepare the catalyst substrate, which overcomes the problems of uneven film thickness and tension caused by the drop film method; through the control of the angular velocity and rotation time during the coating process, the catalyst that meets the requirements is prepared. Substrate material; carbon nanotube arrays were prepared by chemical vapor deposition technology. The analysis found that: the prepared carbon nanotube array has good orientation. Compared with other substrate preparation methods, the spin coating method has the characteristics of low equipment requirements, simple operation, easy control, and highly uniform dispersion of the catalyst. In the preparation process, it is required that there are no μm-sized impurity particles in the coating solution, otherwise it will affect the flatness of the catalyst film. In the experiment, ultrafine fiber filter membranes are often used to filter the coating solution.
