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Single nanotube array based nano encoders

  • Lixin Dong
  • , Arunkumar Subramanian
  • , Bradley J. Nelson
  • , Yu Sun

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

Linear encoders for nanoscale position sensing based on single carbon nanotube (CNT) arrays are presented. Vertically aligned single multi-walled carbon nanotubes (MWNTs) are realized using a combination of e-beam lithography and plasma-enhanced chemical vapour deposition (PECVD) growth. Electron beam lithography is used to define 50-150 nm nickel catalyst dots at precise locations on a silicon chip. Precise control of the position, density and alignment of the tubes has been achieved. Aligned nanotube arrays with spacing varying from 250 nm to 25 μm are realized. Field emission properties of the array are investigated inside a scanning electron microscope (SEM) equipped with a 3-DOF nanorobotic manipulator with nanometer resolution functioning as a scanning anode. With this scanning anode and the single MWNT array, a nano encoder is investigated experimentally. Vertical position is detected by the change in emission current, whereas the horizontal position of the scanning anode is sensed from the emission distribution. A resolution of 98.3 nm in the vertical direction and 38.0 nm (best: 12.9 nm) in the lateral direction has been achieved.
Original languageEnglish
Title of host publicationIROS 2005 - IEEE IRS/RSJ International Conference on Intelligent Robots and Systems
PublisherIEEE
Pages1178-1183
DOIs
Publication statusPublished - Aug 2005
Externally publishedYes
EventIEEE IRS/RSJ International Conference on Intelligent Robots and Systems, IROS 2005 - Edmonton, Canada
Duration: 2 Aug 20056 Aug 2005
https://ieeexplore.ieee.org/xpl/conhome/10375/proceeding

Publication series

Name2005 IEEE/RSJ International Conference on Intelligent Robots and Systems, IROS

Conference

ConferenceIEEE IRS/RSJ International Conference on Intelligent Robots and Systems, IROS 2005
PlaceCanada
CityEdmonton
Period2/08/056/08/05
Internet address

Research Keywords

  • Carbon nanotube array
  • Field emission
  • Nano encoder
  • Nanorobotic manipulator
  • Scanning anode

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