Department of Electrical and Computer Engineering SDP 11 team Yngvesson Ioan Tihenea Tomas Broka Dmitriy Stupak Sergey 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

Department of Electrical and Computer Engineering Detector/Emitter concept  Detector and Emitter are similar devices, one Emits IR and one Detects IR. NANO LETTERS 2008 Vol. 8, No

Department of Electrical and Computer Engineering Optics concept  Lenses will be used to increase the transmittance range and focus light on the detector.

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 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 ??