A thin film, for instance, is less than 1 μm thick; but, if the thickness falls below 100 nm, the film may be more appropriately categorized as a 2D nanomaterial. In the same way that composite materials frequently contain both inorganic and organic components. The term for liquid crystals is best defined as having qualities that are transitional between amorphous and crystalline phases. Materials can be synthesized using a wide number of methods . Based on size, nanomaterials are the main focus of the current research interests. Nanomaterials are particles with a particle size of less than 200 nm. However, some reports call particles with a size less than 1000 nm still define as nanoparticles. Thus, they can be mainly synthesized via two approaches; bottom-up and top-down (Figure ). The two approaches aim to decrease particle size via a top-down approach or increase size via bottom-up approaches (Figure ). Physical, chemical, and biological methods can be used to achieve this target.