Recent advances in graphene monolayers growth and their biological applications: A review

Development of two-dimensional high-quality graphene monolayers has recently received great concern owing to their enormous applications in diverging fields including electronics, photonics, composite materials, paints and coatings, energy harvesting and storage, sensors and metrology, and biotechnology. As a result, various groups have successfully developed graphene layers on different substrates by using the chemical vapor deposition method and explored their physical properties. In this direction, we have focused on the state-of-the-art developments in the growth of graphene layers, and their functional applications in biotechnology. The review starts with the introduction, which contains outlines about the graphene and their basic characteristics. A brief history and inherent applications of graphene layers followed by recent developments in growth and properties are described. Then, the application of graphene layers in biodevices is reviewed. Finally, the review is summarized with perspectives and future challenges along with the scope for future technological applications. [Display omitted] •The growth of graphene layers at reduced temperatures is a crucial task.•The review presents the recent advancements in the growth of graphene at reduced temperatures.•Changes in the physical, chemical, and mechanical properties of the graphene layers with temperature are discussed.•Graphene's role in the fabrication of biosensor devices and functionalities are reported.•Perspectives and challenges need to resolve are proposed for the growth of graphene layers as well as biodevices.