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Nanotechnology
1. A
SEMINAR
ON
PERSPECTIVES OF NANOTECHNOLOGY FOR RF
AND TERAHERTZ ELECTRONICS
PRESENTED BY:
AKASH RANA
PRITEE
MEENU
VANDANA
2. What is Nano technology?
Nano technology is the art and science of manupulating matter at Nano
scale.
1nm = 1billionth of a meter.
Nanotechnology will make most exiting products quite a bit more powerful
and flexible.
3.
4. In this topic we discuss about Nanocarbon,CNT-FET,
Graphene FET, Terahertz Electronics and Phiar
Devices for Rf and Terahertz.
Advances in nanotechonolgy have led to the development
of nano RF or terahertz devices.
The main theme in nanotechnology is the control of
matter on a scale below 100nm.
Terahertz region naminal around 0.1-10 THz.
5. Electronic industry
Automotive industry
Engineering
Medicine
Cosmetics
Textile
Sports
Chemical industry
6. Carbon nanotube are formed from essentially the graphite sheet and the
graphite layer.
Nanotubes are members of the fullerene structural family.
They have length-to-diameter ratio of upto 132,000,000:1.
Replacing transistors from the silicon chips as they are small and emits less
heat.
7. CNT is a tabular form of carbon with diameter as small as 1nm.Length few
nm to microns.
CNT’s are used as electron emitters for field emission sources , CNT
network transistors and also used in nanomechanics.
CNT’s are also applicable in nanovaccum devices by mixing them with CL
phosphors.
CNT'ss are also used in nanomechanics and its applications based on their
mechanical behavior.
8. CNT-FET refers to a field-effect transistor that utilizes a single carbon
nanotube or a array of carbon nanotubes as the channel material instead of
bulk silicon in traditional MOSFET structure.
First demonstrated in 1998, there have been major developments in
CNTFET's.
The channel is turned on/off electrostatically via the gate.
9.
10. Graphene is the mother material of CNTs.
Graphene is the single layer of sp2-bonded carbon atoms and 2-D material.
Graphene is a zero bandgap semiconductor or semimetal.
The zero bandgap means that graphene can not be switched from
conductive state to non-conductive state.
11. A nanotube can function as a integrated radio receiver,a so called all-in-one
nanotube radio.
Currently only receivers have been developed and they are
structured around a carbon nanotube.
The two components in a nanotube radio are amplifier and demodulator.
It involve the field emission current.
12. A new technology that extends the range of electronics into the terahertz
since photonic devices falter below 10 THz.
Phiar has designed detectors and transistors in the terahertz region.
Terahertz detector are tinny antenna connected to MIIM diode.
Terahertz detector offer ultra-high speed,low voltage,wide operating
temperature range,manufacturability and reliability.
13. Government of india has invested around the INRx1 bn so far,to create
facility for nanotechnology research in the country.
Indian nanotechnology companies largly indulge in type1 business as
demand for type2 products are still in nascent stage.
Nanotech funding took a hit in 20-largly due to volatile economy and
defensive maintality of the investors.
14.
15. It offers high bit rates to carry at least 10 Gb/s, sufficiently low frequency
waves to penetrate chip pakages.
It has large collection area for ease of alignment,efficent generation and
detection of terahertz waves using phiar components.
Circumventing need for expensive high frequency RF circuit boards.
16. National Science and Technology Council(USA) Claims that:-
“Nano technology is an enabling technology that will change the nature of
almost every human made object in the next century”
RF and terahertz electronics are among the fastest growing areas as a
result of the discovery, fabrication, and investigation of nanomaterials, in
particular carbon nanotubes, graphenes, and compound semiconductors.
