This presentation introduces two-dimensional materials like graphene. It defines two-dimensional materials as being only one or two atoms thick and able to conduct electrons freely within their plane. The document discusses how graphene, being a single layer of graphite, is the strongest material yet and can efficiently conduct heat and electricity. It notes graphene's potential applications in electronics, solar cells, and biomedicine. In conclusion, two-dimensional materials like graphene are seen as having great potential for developing new nanoelectronics, optoelectronics, and flexible devices.

1. Presented by
Pritom Mukharjee
Jahidul Islam Jehan
Tasmia Islam

2. Welcome
To
Our First Presentation

3. Overview
o Introduction
o What is two dimensional material?
o Two dimensional zoo
o Graphene
o Nobel award over flake of carbon
o Applications
o Conclusion

4. Introduction
o Two-dimensional materials are substances with a thickness of a few
nanometres or less. Electrons in these materials are free to move in the two-
dimensional plane, but their restricted motion in the third direction is
governed by quantum mechanics. Prominent examples include quantum
wells and graphene.
o 2-Dimensional materials are a class of nanomaterials defined by their
property of being merely one or two atoms thick.
o 2D Materials is dedicated to publishing fundamental and applied research of
the highest quality and impact, covering all aspects of graphene and related
two-dimensional materials.

5. What is two dimensional material?
o 2D Materials, sometimes referred to as single layer materials,
are crystalline materials consisting of a single layer of atoms.
o 2D materials can generally be categorized as either 2D allotropes of various
elements or compounds (consisting of two or more covalently
bonding elements).[1]
o The elemental 2D materials generally carry the -ene suffix in their names
while the compounds have -ane or -ide suffixes.
Reference - 1. "Group IV graphene- and graphane-like nanosheets“ by Garcia, J. C.; de Lima, D. B.; Assali, L. V. C.; Justo,
J. F. (2011).

6. Two dimensional zoo

7. Graphene
o Graphene can be described as a one atom
thick layer of graphite.
o It is the strongest material ever tested,[2]
efficiently conducts heat and electricity, and is
nearly transparent.
o Graphene shows a large and nonlinear
diamagnetism, greater than that of graphite,
and can be levitated by neodymium magnets.
Reference – 2. ”Definition of graphene noun from the Oxford Advanced
Learner's Dictionary“

8. Nobel award over flake of carbon

9. Applications
o The study of 2-D materials is one of the newest and most exciting areas of
Materials Science and Engineering.
o 2-D materials have the potential to revolutionize many electronics
applications such as solar cells, transistors, camera sensors, digital screens,
and semiconductors.

10. Applications
o Transistors – Researchers demonstrated and built an experimental
graphene chip of single graphene transistor known as frequency multiplier.
o Integrated circuits – Graphene has the ideal properties to become an
excellent component of integrated circuits.
o Solar cells – Graphene turned to be a promising material for
photoelectrochemical energy conversion in dye sensitized solar cells.
o Optics – Graphene’s high electrical conductivity and high optical
transparency make it a candidate for transparent conducting electrodes.
o Biomedical – Graphene could soon be used to analyze DNA at record-
breaking pace.

11. Other applications
o IR detectors
o Composite materials
o Single-molecule gas detection
o Piezoelectric materials
o Energy harvesting
o Graphene nanoribbons
o Optical modulators
o Chemical sensors

12. Conclusion
o From the above discussion, it is concluded that the discovery of graphene
and other two-dimensional (2D) materials together with recent advances in
exfoliation techniques have set the foundations for the manufacturing of
single layered sheets from any layered 3D material.
o They have the potential to play a fundamental role in the future of
nanoelectronics, optoelectronics and the assembly of novel ultrathin and
flexible devices.
o Graphene is at this time the material most commonly associated with 2-D
materials.

13. Thank you