This document discusses 2D nanomaterials, specifically graphene. It begins with an introduction to dimensionality and how properties change as dimensions decrease from 3D to 2D. Graphene, a single layer of carbon atoms arranged in a honeycomb lattice, is discussed in detail. Methods for fabricating graphene including mechanical exfoliation using scotch tape and chemical vapor deposition are described. The document outlines graphene's properties, applications, and potential for further development.

2. Presented by:

3. Content
• Introduction
• Nanoscience-material
• Dimensionalilty (density of states,ek diagram,elecrtron confiment)
• Carbon –based nanomaterials
• What is graphene
• Orbital structuregraphene fabrication methed
• Scotch tape methed
• Growth methed(cvd)
• Properties of sic graphene
• Future Prospects
• References

4. Introduction

9. Concept of Dimensionality:
 0D
 1D
 2D
 3D(bulk)
Surface area to volume ratio
increases with the decrease in
dimensions.
Figure 2: Nanostructured Materials
https://www.researchgate.net/figure/Examples-for-0D-1D-2D-and-3D-
carbon-nanostructures_fig2_320595475
Figure 3: Representation of Surface to Volume Ratio
https://pdfs.semanticscholar.org/fcde/b28da22244d9e7cdb6110396bac85a2bb647.pdf

10. Why 2D materials are important?
 Atomically thin-layered structures
 Strength
 Band gaps
Figure 4: Representation of Strength of Graphene and Graphite
https://cdn.shopify.com/s/files/1/0823/0287/files/graphite-graphene-
strength_2048x2048.png?13586956072718189884
Figure 5: Direct and indirect band
gap semiconductor
https://www.semanticscholar.org/paper/Direct-and-indirect-band-gap-types-in-
conjugated-or-Seo-Hoffmann/f3c1169f9ae684a240ec4aadfa775360e0c5c224/figure/5

11. Motivation
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12. Graphene fabrication method
• Scotch Tape Method (Top down)
– Exfoliation of random thickness graphene from graphite
• Growth method (Bottom up)
– CVD growth on Cu foils – Graphitization of SiC wafer
• Layer resolved transfer (Bottom up + Top down)
– Exfoliation of graphene on SiC wafer/transfer

13. Graphene
Monolayer of carbon atoms
Graphene is a zero-gap semiconductor
Graphene sheets stack to form graphite
6/22/2023 Fig.1

14. Graphene
6/22/2023 14
Fig.2

15. Experimental Section

16. Properties Of Graphene

17. Applications of Graphene
• Sensors
• Batteries
• Electron Emission Displays
• Structural Composites
• Catalyst Supports
• Polymer Masterbatches
• Functional Inks

18. XRD of Graphene

19. Conclusion

20. Future Work

21. Acknowledgment

22. References