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Welcome to the Nano world of Welcome to the Nano world of Carbon Nanotubes Carbon Nanotubes
Presented byPresented by Md. Tazul IslamMd. Tazul Islam Student No:0511027Student No:0511027
Materials Science is based on SCP3Materials Science is based on SCP3
Which stands forWhich stands for
S=StructureS=Structure
C=CharacterizationC=Characterization
P=PropertiesP=Properties
=Processing=Processing
=performance=performance
The Materials ScienceThe Materials Science
TetrahedronTetrahedron
Fields of ApplicationFields of Application
StructuralStructural ElectromagneticElectromagnetic ChemicalChemical MechanicalMechanical Polymer CompositesPolymer Composites
Metallic and semiconducting Metallic and semiconducting nanotubesnanotubes
Carbon Nanotube Carbon Nanotube InterconnectsInterconnects
As a vessel for drug deliveryAs a vessel for drug delivery
StructuralStructural
Combat JacketsCombat Jackets Space ElevatorSpace Elevator ClothesClothes ConcreteConcrete BridgesBridges PolyethylenePolyethylene
The completed cable would be thickest at the geostationary orbit, where the tension was greatest, and would be narrowest at the tips to reduce the amount of weight per unit
area of cross section that any point
The cable must be made of a material with a large tensile strength/density ratio.Carbon nanotubes' theoretical tensile strength has been estimated between 140 and 177 GPa (depending on plane shape), and its observed tensile strength has
been variously measured from 63 to 150 GPa, close to the requirements for space elevator structures
ElectromagneticElectromagnetic
Artificial musclesArtificial muscles BuckypaperBuckypaper SuperconductorsSuperconductors
DisplaysDisplays TransistorsTransistors Conductive filmsConductive films
.
Prototype of NED
Nano Emissive Display
NED is basically a thin, flat cathode ray tube with thousands of electron guns at each pixel. In the past, carbon nanotubes have been pasted or printed onto a surface but the quality of the resulting display has been disappointing. On a back plate, only 3 mm behind each sub-pixel, we place a small structure that contains about one thousand carbon nanotubes arranged such that a properly applied voltage excites each nanotube to bombard the color phosphors with electrons.It will extend the life of large flat panel displays to up to 30,000 hours as well as reduce the price to half (about 400 $) where plasma starts to see “burn in”
aging effects at only 2,000 hours.
Chemical
Hydrogen Storage
Air Pollution Filter
Water Filter
Biotech Container
Carbon nanotubes used by the researchers are sheets of carbon Carbon nanotubes used by the researchers are sheets of carbon
atomsatoms only seven water molecules can fit across their diameteronly seven water molecules can fit across their diameter The super smooth inside of the nanotubes allow liquids and The super smooth inside of the nanotubes allow liquids and
gases to rapidly flow throughgases to rapidly flow through water flow rates is 10,000 times faster than would be predicted water flow rates is 10,000 times faster than would be predicted
by classical equationsby classical equations Salt removal from water, commonly performed through reverse Salt removal from water, commonly performed through reverse
osmosis, uses less permeable membranes, requires large osmosis, uses less permeable membranes, requires large amounts of pressure and is quite expensive.amounts of pressure and is quite expensive.
However, these more permeable nanotube membranes could However, these more permeable nanotube membranes could reduce the energy costs of desalination by up to 75 percent reduce the energy costs of desalination by up to 75 percent compared to conventional membranes used in reverse osmosis.compared to conventional membranes used in reverse osmosis.
Despite tiny size, they can filter water more efficiently than current
MechanicalMechanical
Oscillator Oscillator Nanotube Slick surfaceNanotube Slick surface
membranemembrane
In Semiconducting SectorIn Semiconducting Sector
When CNTs are fabricated a mixture of metallic and semiconducting nanotubes is formed. This carbon nanotube can be used as light emitting semiconductors.
Fig: Arrays of carbon nanotubes in a semiconductor
When excited by a UV laser, titanium dioxide nanoparticles undergo charge separation, where some of the semiconductor’s electrons get trapped—a 3,770 electrons .Electrons trapped in the titanium dioxide displayed a blue coloration
For SWCNTs in the titanium dioxide particles, the blue color decreased. This lack of color meant that some of the electrons trapped in the titanium dioxide were transferred to the SWCNTs.
Complete transfer consisted of 1 electron per 32 atoms of carbon atoms (building blocks of the SWCNTs), and occurred in
just 10 nanoseconds. Such a high electron capacity turned the SWCNTs into
supercapacitors, which can be useful in electronics application
Carbon nanotube interconnects are used in universal memory. The high density CMOS RAM can replace conventional RAMs
and flash memory with even better performance.
Only in sophisticated fields???Only in sophisticated fields???
Answer is NoAnswer is No
In SportsIn Sports
Tour de France winning bikeTour de France winning bike
NanoDynamics golf ball This ball is engineered with nanoparticles to spin less, which should mean less slices and
hooks. The bad news? Lower spin could mean shorter drives. But NanoDynamics is working to put more pop into the balls by hardening
their shell.
AcknowledgementAcknowledgement
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Thanks 2 allThanks 2 allfor being patient &for being patient &
listeninglistening