Carbon lives along with us in our daily life and has a vital role to play. It is present in the air and within all living organisms. Due to its handheld advantage in nano-properties that are utilized in many applications, carbon substrates came under limelight during the recent decades. Carbon substrates are most widely used in cancer detection, catalysis, bio-sensing, adsorption, drug delivery, carbon capture, hydrogen storage, and energy. Alongside, composite materials with carbon as an additive are also developing rapidly in applications like infrastructures, automobile, health care, consumer goods, etc. which became an integral chunk of our life. In this paper different types of carbon substrates and its applications, properties of the substrates were reviewed. The applications and methods of synthesis of carbon substrates are also dealt with a broad perspective.

    Abstract
    1 Introduction
    2 Carbon substrates
        2.1 Carbon nano-tubes
        2.2 Carbon precursor
        2.3 Graphene
        2.4 Graphite
        2.5 Graphene oxide
        2.6 Carbon sheets based origami fold cores
        2.7 Carbon nano-fibers
        2.8 Activated carbon and carbon black
    3 Fabrication processes
        3.1 Pyrolysis
        3.2 Chemical co-precipitation process
        3.3 Hydrothermal carbonization
        3.4 Cold compression process
    4 Characterization
    5 Applications
    6 Conclusion
    References

• M. Ramesh(Department of Mechanical Engineering, KITKalaignarkarunanidhi Institute of Technology)
• L. Rajeshkumar(Department of Mechanical Engineering, KPR Institute of Engineering and Technology)
• R. Bhoopathi(Department of Mechanical Engineering, Sri Sairam Engineering College)