Abstract/Details

Nanotube and nanowire devices


2004 2004

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Abstract (summary)

The microelectronic revolution has spawned many fields that take advantage of the incredibly small size devices that can be made. However, the limits of photolithography and even electron beam lithography are fast approaching. Future progress in miniaturization of electronics, mechanical devices and optical structures will require new processes and materials.

The work presented in this thesis is an investigation into the possibilities of using new nanomaterials to fabricate simple devices. It is a challenge to integrate these materials with traditional microfabrication techniques. The processes commonly used to make electronics can damage or destroy some nanomaterials. Also, it is difficult to place and orient these novel substances. Finally, at the nanometer scale, different physical properties emerge due to confinement effects and the large surface-area-to-volume ratio.

We have fabricated devices out of carbon nanotubes and electrodeposited nanowires. The nanowires have been fabricated in gold, platinum, silver and nickel. For all the nanowires except silver we have measured the temperature dependence of the resistance and found that it is consistent with bulk metals. We have created and tested crossed nickel nanowires for magnetoresistive effects and found none.

From the platinum wires we have fabricated and tested the first doubly clamped resonator fabricated out of “bottom-up” materials. This resonator has much lower Q than comparable devices made by traditional techniques. The resonator also exhibits non-linear behavior well described by the Duffing oscillator.

From carbon nanotubes we have created a doubly-clamped beam. In addition, we have created a novel carbon nanotube field emission device with integrated grid. Work is ongoing to achieve experimental results from these devices.

The appendix describes photonic crystal defect cavity lasers, which offers interesting potential for integration with nanotubes and nanowires.

Indexing (details)


Subject
Electrical engineering
Classification
0544: Electrical engineering
Identifier / keyword
Applied sciences; Nanotube; Nanowire; Photonic crystals
Title
Nanotube and nanowire devices
Author
Husain, Ali
Number of pages
110
Publication year
2004
Degree date
2004
School code
0037
Source
DAI-B 65/10, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780496113927, 0496113925
Advisor
Scherer, Axel
University/institution
California Institute of Technology
University location
United States -- California
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3151368
ProQuest document ID
305200868
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/305200868
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