Revisiting/revised paper I am wondering how can I split my research into two or more research article. 
I heard that there's a type of papers that called revisiting which basically relies on previous work with some enhancements.

The question is what's the structure for the revisiting paper and what's the structure for the revised paper and what are the differences between them.
Although you can split a paper in two, it is often not the best choice, known as salami publication. 

There are, of course, papers revisiting a certain topic, sometimes tens or hundreds years after the first publication. Revisiting a topic is not the same, as simply splitting a paper in two. There is no specific structure for a revisiting paper - the term refers to its relation with previous research only.

In academic publishing, we call a revised paper a version of the manuscript which underwent a peer review process (i.e. in a journal), received feedback and was already corrected (revised) based on the feedback from peers. This term refers to the stage of the publication process and not to the structure or purpose of the paper.