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APPLICATION OF NANOMATERIALS - II, image, HARINI V 1961008 NANOMATERIALS…
APPLICATION OF NANOMATERIALS - II
STRUCTURAL
APPLICATION
REDUCE THE WEIGTH OF
VEHICLES
80% LESS THAN STEEL
CARBON NANOTUBES
TYPES
zigzag CNT
chiral CNT
armchair CNT
SYNTHESIS
laser ablation
Target source: The most common carbon source target used is solid graphite which is irradiated by laser source and vaporized into vapor carbon atoms.
Laser source: CO2 laser or pulsed laser source such as Nd:YAG laser (Neodymium doped Yttrium Aluminum Garnet, Nd:Y3Al5O12) .
Substrate used: water cooled copper collector
chemical vapor deposition
Sources for carbon: The precursor for carbon nanotubes are hydrocarbon gases such as acetylene, ethylene, methane
Catalyst used: To produce single-walled carbon nanotubes metal catalyst nanoparticles such as iron, cobalt, nickel, molybdenum, iron-molybdenum alloys, etc. are used.
Temperature: 500–900°C.
Inert gas atmosphere: Argon gas.
Substrate used: Substrates are materials on which the CNTS are grown. The commonly used substrates in CVD method are zeolite, silica, silicon plate coated with iron particles, etc.
arc discharge
Electrodes: Pure graphite rods (both positive and negative electrode).
Diameter of electrodes: 5–20 μm.
Current: 50–120 amperes.
Voltage: 20–25 V.
APPLICATION
Biomedical field,
Tissue engineering,
Cancer cells tracing,
Gene and drug delivery applications,
Sensor-based biomedical applications
ENERGY APPLICATION
FUEL CELL
40-60% Efficiency
fuel cell produce next to
no pollution
A PEM fuel cell
extract energy by converting
hydrogen and oxygen to water
SOLAR
CELLS
Self-Cleaning Solar Panels :
In July 2012, ecoSolargy launched a range of solar panels which use self-cleaning glass - this keeps the panels free of dirt and debris, to ensure that the PV cells receive as much of the incident solar energy as possible. This technique is very effective in helping the conventional cells to perform at peak efficiency.
Dye-Enhanced Solar Cells:
uses an organic dye monolayer to help absorb sunlight, much as plants do for photosynthesis.
STORAGE
DEVICES
Nanomaterials help in reducing the diffusion length and hence improve the kinetics of the operation of an energy storage device. Thus, nanomaterials can improve the charge–discharge rates. The electron transport within the electrode is also improved by nanometer-sized particles.
BIOMEDICAL APPLICATION
DRUG DELIVERY
BONE AND TEETH
IMPLANTS
ANIMEL CELL
CULTURE
TISSUE /
IMPLANT
ENGINEERING
DIAGNOSIS
IMMUNOSENSING
CANCER
TEARTMENT
HARINI V
1961008
NANOMATERIALS
