It's all about Boron Nitride Nanotube. Tried to give some primary ideas of BNNT. Hope u enjoy it...:)

2. Boron Nitride Nanotube
A pioneer of revolutionary material
Md. Mirza Anam Shawon
Student ID:1311042
Materials And Metallurgical
Engineering

3. List // Overview
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Introduction
Properties
Comparison
Synthesis
Processing
Application
Conclusion

4. List // Introduction
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•Boron Nitride Nanotubes (BNNT), firstly synthesized in 1995.Invention
•BNNTs are structural analogues of carbon nanotubes with
boron and nitrogen atoms instead of carbon atoms.Combination
•BNNTs can be imagined as a rolled up hexagonal BN layer or
as a carbon nanotube (CNTs) in which alternating B and N
atoms entirely substitute for C atoms.
Substitution
•Similar to CNTs, BNNTs also have chiralities but the
chiralities do not play a significant role in determining
electrical properties.
Chirality

5. List // Properties
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Band Gap
Sensitivity
Insulator
Electrical Properties
Chemical Properties
•Uniform band gap (5.5 eV)
•High sensitivity for sensor materials
•Unusually efficient electric insulator
•electrically isolating materials with
uniform electronics properties
•Inert
•Oxidation resistant

6. List // Comparison
CNTS
vs
BNNTs
Thermal
Oxidation
Electrical
Properties
PolarityAppearance
Mechanical
Properties
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7. List // Synthesis Method
Arc
Discharge
Laser
Ablation
Ball
Milling
Chemical
Vapour
Deposition
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8. Process // Processing
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•Amorphous B powder
+ NH3
Flowing
atm of N2
• Addition of fine Fe
catalyst particles
Prior to heat
treatment • Synthesized product
+ hydrocarbon solvent
+ ceramic grinding
media
Milling in
polyethylene bottle
•Addition of Al, SiC, Pt,
Mo with milled
material
Adding substrates
•Temperature ranging
from 1100 C to 1400 C
•Final product
Heat
Treatment

9. List // Applications
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• BNNT is not cytotoxic.
• Useful in nano-textured cellular scaffolding for nerve and bone tissue regeneration.
• Nanoscale drug vectors and delivery structures.
• Electroporation-based oncology (cancer) therapies.
• A new generation of lightweight ceramic composites.
• A wide range of high temperature applications in systems such as jet engines.
• Low temperature applications could include dentistry.
Biomedical
Ceramic
Composites

10. List // Continue…
• This arena of BNNT enhanced composites is anticipated to have exceptional strength and
thermal conductivity far beyond what currently exists in the market place.
• Potential applications are present in areas such as armor including transparent armor,
thin coatings, batteries and aerospace components.
• Outstanding piezoelectric and electrostrictive properties are observed for BNNT.
• This combined with their exceptional strength will allow creation of nontoxic lightweight
piezoelectric systems with better response and mechanical properties than current
piezoelectric polymers.
• BNNT will be key to enhanced sensors and robotics including applications
in Unmanned Aerial Vehicles, harvesting energy and satellites.
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Polymer
Composites
Piezoelectric

11. List // Continue…
• Flame resistant high strength cabling will soon become available in applications for use
in expanded ranges of temperatures and extreme operational environments.
• Including CNT cores will create a new level of high strength lightweight conductive cables.
• Thermally conductive and electrically insulating components will be possible with new
BNNT ultra strong composites.
• Anticipated applications range from lightweight wiring for aerospace systems,
to enhanced cooling of electronic components, to high performance batteries
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Fire Retardant
Cabling
Electrically
Insulating

12. List // Continue…
• BNNT can be the basis for neutron shielding composites for use in radiation
shielding applications due to the presence of boron with its unique high
efficiency for absorbing thermal neutrons.
• BNNT can also be used for ultra violet (UV) shielding applications.
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Radiation
Shielding

13. List // Conclusion
• Super-strong textile-like nanotubes with the appearance of cotton, the material has a molecular backbone 100 times stronger than steel.
• Boron Nitride Nanotubes are as strong as the better-known carbon nanotubes, but much more heat resistant - up to 800° C or 1472° F in air.
• The material also has an intrinsic piezoelectric function -- meaning it creates electricity resulting from stretching or twisting.
• This and other characteristics of the multi-functional nanotube make the technology a prime candidate for applications ranging from heat shields for the next
generation of spacecraft, to new water filtration capabilities - even potential cancer therapies.
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Boron nitride nanotubes - a new revolutionary chapter in a nanotechnology

14. List //