dc.contributor.advisor | Demir, Hilmi Volkan | |
dc.contributor.author | Uran, Can | |
dc.date.accessioned | 2016-01-08T19:48:41Z | |
dc.date.available | 2016-01-08T19:48:41Z | |
dc.date.issued | 2008 | |
dc.identifier.uri | http://hdl.handle.net/11693/16309 | |
dc.description | Ankara : The Department of Electrical and Electronics Engineering and the Institute of Engineering and Sciences of Bilkent University, 2008. | en_US |
dc.description | Thesis (Master's) -- Bilkent University, 2008. | en_US |
dc.description | Includes bibliographical references leaves 48-54. | en_US |
dc.description.abstract | One of the major challenges in nanofabrication commonly arises from the
necessity to integrate nanostructures (e.g., nanoparticles) on the same chip with
microcomponents (e.g., microelectrodes) that are orders-of-magnitude larger in
size. For example, in order to make electrical contacts to colloidally synthesized
nanoparticles (typically 1-100 nm in size) by integrating them with
microelectrodes (typically in the few micrometers range on the critical side), a
large size mismatch that easily ranges from 1:10 to 1:10,000 is required to be
handled delicately for successful nano-to-micro integration. This necessitates the
ability to manipulate and integrate nanoparticles with a sufficient level of
precision on the microchip. In this thesis, to provide a convenient solution to this
challenging problem, we proposed and demonstrated for the first time an onchip
nanowire device that features a controllable nanogap in its architecture for
capturing and electrical characterization of nanoparticles in the gap, all fully
integrated on the same microchip. Our innovative approach relies on the use of
dielectrophoretic electric-field assisted self-assembly of our segmented
nanowires to construct a nanoscale device platform. For this purpose, we
synthesized gold-silver-gold segmented nanowires and dielectrophoretically
aligned them across our microfabricated array of electrodes. Subsequently, we
selectively removed the middle silver segment to open a gap in the nanometer size between the self-aligned gold end segments. Using dielectrophoretic
assembly once more, we captured nanoparticles in these nanogaps for further
electrical characterization. One of the key benefits in our approach was that the
aligned nanowires automatically provided electrical contacts to the captured
nanoparticles to allow for electrical probing at the nanoscale. Our innovative
approach enabled convenient full integration from nanoparticles to nanowires to
microelectrodes to macroprobes on a single chip, spanning a size range of more
than six orders of magnitude. | en_US |
dc.description.statementofresponsibility | Uran, Can | en_US |
dc.format.extent | xi, 54 leaves, illustrations, graphs | en_US |
dc.language.iso | English | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | nanowires | en_US |
dc.subject | nanoparticles | en_US |
dc.subject | self-assembly | en_US |
dc.subject.lcc | QC176.8.N35 U73 2008 | en_US |
dc.subject.lcsh | Nanoparticles. | en_US |
dc.subject.lcsh | Nanostructures. | en_US |
dc.subject.lcsh | Photochemistry. | en_US |
dc.title | Fabrication of an on-chip nanowire device with controllable nanogap for manipulation, capturing, and electrical characterization of nanoparticles | en_US |
dc.type | Thesis | en_US |
dc.department | Department of Electrical and Electronics Engineering | en_US |
dc.publisher | Bilkent University | en_US |
dc.description.degree | M.S. | en_US |