Department of Electrical and Computer Engineering SDP 11 team Yngvesson Ioan Tihenea Tomas Broka...
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Transcript of Department of Electrical and Computer Engineering SDP 11 team Yngvesson Ioan Tihenea Tomas Broka...
Department of Electrical and Computer Engineering
SDP 11 team Yngvesson
Ioan TiheneaTomas Broka
Dmitriy StupakSergey Derivolkov
SINGLE-WALLED CARBON NANOTUBE
FILM IR TRANCEIVER
Department of Electrical and Computer Engineering
Outline
Goals System Overview and Components Design Why Carbon Nanotubes Fabrication Procedure Suspension Procedure Current Status and Group Breakup Application and Advantage Questions
Department of Electrical and Computer Engineering
Goals
To assemble a suspended single-walled carbon nanotube (SWNT) film device.
Integrate optoelectronics in device to detect Infrared radiation.
To implement device as a communication system.
Improve existing technology to achieve higher speed and increased range.
Department of Electrical and Computer Engineering
Outline
Goals System Overview and Components Design Why Carbon Nanotubes Fabrication Procedure Suspension Procedure Current Status and Group Breakup Application and Advantage Questions
Department of Electrical and Computer Engineering
System Overview
ModulatorSignal
Processing Module
Optical LensesIR LEDCNT
Detector
Department of Electrical and Computer Engineering
Detector/Emitter concept
Detector and Emitter are similar devices, one Emits IR and one Detects IR.
NANO LETTERS 2008Vol. 8, No. 8 2224-2228
Department of Electrical and Computer Engineering
Optics concept
Lenses will be used to increase the transmittance range and focus light on the detector.
IR LEDCNT
Detector
Detector’s LensTransmiter’s
Lens
Department of Electrical and Computer Engineering
Outline
Goals System Overview and Components Design Why Carbon Nanotubes Fabrication Procedure Suspension Procedure Current Status and Group Breakup Application and Advantage Questions
Department of Electrical and Computer Engineering
Why Carbon Nanotubes
Science 305, 1273 (2004);
Department of Electrical and Computer Engineering
Outline
Goals System Overview and Components Design Why Carbon Nanotubes Fabrication Procedure Suspension Procedure Current Status and Group Breakup Application and Advantage Questions
Department of Electrical and Computer Engineering
Fabrication procedure
Will use a method that does not limit film quality or production efficiency.
Three step procedure.• Vacuum filtering surfactant onto a filtration membrane.• Washing surfactant with purified water.• Dissolving of the filtration membrane with a solvent.
Advantages of filtration method.• Homogeneity of films• Yields maximal electrical conductivity and mechanical
integrity.• Film thickness is readily controlled.
Department of Electrical and Computer Engineering
Outline
Goals System Overview and Components Design Why Carbon Nanotubes Fabrication Procedure Suspension Procedure Current Status and Group Breakup Application and Advantage Questions
Department of Electrical and Computer Engineering
Suspension procedure
Basic concept. Why do we
suspend? Fabrication of
Supporting Washer
Electrical Contacts
Connecting SWCN Film to Supporting Washer
IR Radiation
Science 305, 1273 (2004);
Department of Electrical and Computer Engineering
Outline
Goals System Overview and Components Design Why Carbon Nanotubes Fabrication Procedure Suspension Procedure Current Status and Group Breakup Application and Advantage Questions
Department of Electrical and Computer Engineering
Current status and group Breakup
Where we are now?• Researching fabrication & suspension procedures• Obtaining samples of the CNTs• Working on our own SWCNT Film• Learning how to use SEM & AFM microscopes• Starting Webpage design
Responsibilities: • Ordering and organizing supplies - Tomas• Suspension – Sergey• Fabrication – Ioan• Circuitry Design & Optics - Dmitriy
Department of Electrical and Computer Engineering
Outline
Goals System Overview and Components Design Why Carbon Nanotubes Fabrication Procedure Suspension Procedure Current Status and Group Breakup Application and Advantage Questions
Department of Electrical and Computer Engineering
Application and advantage
This device can be used in a communication system.• Better for local network communication systems. • It can be interfaced with fiber optics.
This device is cheaper (presumably on the production line) than fiber optic lasers. Though lasers are better technology because a lot of
time and money has been invested into them, they are still very expensive.
With enough research, SWNT films can be made to have acceptable speeds for metropolitan and local area networks.
Department of Electrical and Computer Engineering
Outline
Goals System Overview and Components Design Why Carbon Nanotubes Fabrication Procedure Suspension Procedure Current Status and Group Breakup Application and Advantage Questions
Department of Electrical and Computer Engineering
Questions
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