# ENGINEERING PHYSICS # ------------------------------------------------------------------------------------- APPLICATION OF CNT’S ------------------------------------------------------------------------------------- CONTENT ------------------------------------------------------------------------------------- >WHAT IS CNT? Carbon Nano Tube Buckytubes >STRUCTURES OF CNTs Armchair structure Zigzag structure Helical or Chiral structure >CATEGORIES OF CNTs Single-Walled Carbon Nanotubes(SWCNT) Multi-Walled Carbon Nanotubes(MWCNT) >APPLICATIONS OF CNTs Nanoscale electronic devices Battery electrodes, electrical devices & reinforcing fibers Flat-panel display Vacuum tube lamps Switching devices & display devices The sensitive detector of various gases Battery technology Nanoprobes Serve as catalyst Tiny electronic circuits Interconnects in chip Designing a light-weight shielding material >APPLICATIONS OF CNTs IN CIVIL -In concrete -Nano silica -In steel Sandvik nano flex MMFX2 -In glass Self-cleaning glass >REAL LIFE EXAMPLES -Nano House -The basic computer using carbon nanotubes ------------------------------------------------------------------------------------- CREATIVE SLIDES

2. ENGINEERING
PHYSICS

3. APPLICATION OF
CNT’S

4. CONTENT
 WHAT IS CNT?
 STRUCTURES OF CNTs
 CATEGORIES OF CNTs
 APPLICATIONS OF CNTs
 APPLICATIONS OF CNTs IN CIVIL

5. WHAT IS CNT?
 CNT stands for Carbon Nano Tube.
 Carbon nanotubes are allotropes of carbon with
a cylindrical nanostructure.
 CNTs are also known as Bucky tubes.
 Nanotubes are member of the fullerene
structural family.

6. STRUCTURE OF CNT
 Depending on folding of graphite sheet, the structure of
CNTs are classified as,
I. Armchair structure
II. Zigzag structure
III. Helical or Chiral structure
Armchair structure
Zigzag structureHelical or Chiral structure

7. CATEGORIES OF CNT
 Carbon nanotubes are categorised as follow,
I. Single Walled Carbon Nanotubes (SWCNT)
II. Multi Walled Carbon Nanotubes (MWCNT)
SWCNT MWCNT

8. APPLICATION OF
CNT’S

9. NANO SCALE ELECTRONIC
DEVICES
 CNTs are used in constructing Nano scale electronic
devices.

10. BATTERY ELECTRODES,
ELECTRICAL DEVICES &
REINFORCING FIBERS
 CNTs are used in battery electrodes, electrical
devices, reinforcing fibers which make stronger
composites.

11. FLAT-PANEL DISPLAY
 The electron emission concept of CNTs are used as
emitter in a flat-panel display.
ADVANTAGES:
 Low energy consumption
 High resolution
 Thin device dimension

12. VACUUM TUBE LAMPS
 Based on electron emission effect of CNTs, vacuum
tube lamps can be produced.
 That are bright as conventional light bulbs with
longer life and more efficiency.

13. SWITCHING DEVICES & DISPLAY
DEVICES.
 Semiconducting CNTs are used as switching devices
and display devices.
SW ITC H IN G D EVIC ES
D ISPLAY D EVIC ES

14. SENSITIVE DETECTOR OF
VARIOUS GASES
 Chiral semiconducting carbon nanotubes are used
as a sensitive detector of various gases.

15. BATTERY TECHNOLOGY
 CNTs are used in battery technology to design fuel
cells.

16. NANOPROBES
 Nanotube tips can be used as Nano probes.
 A Nano probe is an optical device.
 It helps to enhance the Raman scattering effect of the light.

17. SERVE AS CATALYST
 Nanotubes serve as catalyst for some chemical
reaction.
 Oxidation
 Radical addition
 Nucleophilic addition
 Electrophilic addition

18. TINY ELECTRONIC CIRCUITS
 The CNTs can be used to build tiny electronic circuits.
 Which are almost 1000 times smaller than today’s
technology.
MOTH ER B OA R D

19. INTERCONNECTS IN CHIP
 CNTs are used as
interconnects in chip due to
their extremely low
resistance.

20. DESIGNING A LIGHT-WEIGHT
SHIELDING MATERIAL
 A plastic composite of CNTs are used in designing a
light-weight shielding material for electromagnetic
radiation.

21. APPLICATION OF
CNT’S IN CIVIL

22. APPLICATION OF CNT’S
IN CIVIL
 Nanotechnology is widely used in construction
material as :
 In Concrete
 In Steel
 In Glass

23. CONCRETE
 The addition of small amount(1%) of CNT improves the mechanical
property of concrete.
 Bulk density
 Volume stability
 Durability
 Sustainability of concrete

24. CONCRETE
 Oxidized MWNT shows the best improvement in
 Compressive strength ( +25 N/mm2 )
 Flexural strength ( +8 N/mm2 )
 It is observed that the samples of reinforced with CNTs exhibit lower shrinkage
than the plain cement paste.

25. NANO SILICA
 Nano silica addition to cement base materials can
degradation of the fundamental C-S-H (Calcium-Silicate-
Hydrate) reaction of concrete cause by calcium Leaching in
water as well as block water penetration and therefor leads to
improvements in durability.
When related to OPC as a result the compressive strength
of the material is increase by 3 to 6 times.

26. STEEL
 Above 750 F, steel starts to loose its structural integrity, and
at 1000 F, steel loses 50% of its strength.
 Infusion of steel with Nano scale copper particles could maintain
structural integrity of steel up to 1000 F.
 New infused steel allows ultra high strength, corrosion resistance and
have good surface finish.

27. TYPE OF STEEL PROPERTIES
SANDVIK NANOFLEX
• High Young’s Modulus
• High strength
• Corrosion resistance
• Good weld ability
MMFX2
o Twice the strength of conventional steel
o Five times more corrosion-resistance than
conventional steel
o Alternative to stainless steel, but at a lower cost
STEEL
There are two international product :

28. The columns
shown provide the
same strength .
CONVENTIONAL
STEEL
M M F X ’ S S T E E L
REDUCES MATERIAL
REQUIREMENTS BY 20-

29. GLASS
 Titanium dioxide (TiO2) is used in nanoparticles form to coat glazing
which result in self cleaning glass.
Self-cleaning glass is exactly as the name suggests - glass that keeps
itself clean.

30. GLASS
It uses an organic process whereby dirt is broken down by daylight and
is then washed away by rain.
 It also provides Thermal Insulation, Safety, Solar Control and Noise
Control.

31. REAL LIFE
EXAMPLES

32. CALIFORNIA ACADEMY
OF SCIENCES
EXHIBITION AND
RESEARCH CENTER
S A N F R A N C I S C O
MMFX
STEEL

33. WASHINGTON STREET
BRIDGE
MMFX
STEEL

34. RETAINING
WALLS/MARINE
FACILITIES
AL SOWWAH ISLAND,
MMFX STEEL
&
NANO
SILICA

35. DIVES IN MISERICORD
CHURCH
ROME, ITALY
SELF-
CLEANING
CONCRETE

36. NANO HOUSE
AUSTRALIA
UNIVERSITY
OF
TECHNOLOGY,
SYDNEY
 Self cleaning Glass
 Nano-enabled Solar Cells
 Nano-enabled fireproof
coating
 Nano Concrete
 OLED Lights

37. BASIC COMPUTER
USING CARBON
NANOTUBES
STANFORD
UNIVERSITY
A team of Stanford engineers has
built a basic computer using
carbon nanotubes, a
semiconductor material that has
the potential to launch a new
generation of electronic devices
that run faster, while using less
energy, than those made from
silicon chips.

38. QUESTIONS ???

39. THANK YOU

40. slidescreative@gmail.c
om
+ 9 1 7 2 0 2 0 7 8 5 7
7
+ 9 1 9 0 3 3 7 1 5 9 5
6
C O N T A C T U S !