SINGLE-WALLED CARBON NANOTUBE FILM IR TRANCEIVER

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 LED CNT 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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