Write a literature survey of your research theme. What work is important (socially/academically/industrially in the field – there may be a different answer for each)? What is the cutting edge? A literature survey should organize the literature – look for things that you can usefully compare; for example, are there different types of material that can be listed, or methods whose advantages and disadvantages can be compared?

Do not write an essay about the research theme which is supported by references; Write a literature survey – organize the literature you find and read and write starting from the literature.