(1) entry-level SCI, representing the member journals of applied polymer science (IF 2.2).

The influence factors of entry-level SCI are generally around 1-2, and the field is relatively narrow, with emphasis on application and less basic research. This kind of SCI periodicals is better because the proportion of workload is greater than that of innovation. A doctoral student with general qualifications should be able to publish 1 and 2 articles after studying in a regular laboratory for 5 years.

(2) Progressive SCI, representing the member journal Material Chemistry C》(IF 6.6).

This level of journals has been widely recognized by the industry. The author's participation in this magazine can add a lot of points to his resume, and many schools will also provide awards. This SCI requires certain novelty and scientific rigor, and requires the author to choose the right topic and have good academic literacy.

(3) The internationally renowned SCI stands for ACSNano (IF 13.9).

This level is generally stable in all categories of the Chinese Academy of Sciences. It is an essential weapon to apply for various titles, and it is often the representative work of professors. From here on, the article can be not only novel, but also wonderful. This kind of article needs not only accurate data, but also high quality, beautiful drawing and a lot of time investment. To sum up, this article is something that ordinary professors should face with the spirit of 12, and it is quite difficult to submit it.