Department of Electrical and Computer Engineering SDP 11 team Yngvesson Ioan Tihenea Tomas Broka Dmitriy Stupak Sergey Derivolkov SINGLE-WALLED CARBON

Department of Electrical and Computer Engineering

SDP 11 team Yngvesson

Ioan TiheneaTomas Broka

Dmitriy StupakSergey Derivolkov

SINGLE-WALLED CARBON NANOTUBE

FILM IR TRANCEIVER


Outline

Goals System Overview and Components Design Why Carbon Nanotubes Fabrication Procedure Suspension Procedure Current Status and Group Breakup Application and Advantage Questions


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.


Outline



System Overview

ModulatorSignal

Processing Module

Optical LensesIR LEDCNT

Detector


Detector/Emitter concept

Detector and Emitter are similar devices, one Emits IR and one Detects IR.

NANO LETTERS 2008Vol. 8, No. 8 2224-2228


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


Outline



Why Carbon Nanotubes

Science 305, 1273 (2004);


Outline



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.


Outline



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);


Outline



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


Outline



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.


Outline



Questions

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Documents

Department of Electrical and Computer Engineering SDP 11 team Yngvesson Ioan Tihenea Tomas Broka Dmitriy Stupak Sergey Derivolkov SINGLE-WALLED CARBON